-- NEW FEATURES -- ============ -- New documentation for how to migrate a trigger-based partition set managed by pg_partman to a native set - doc/migrate_to_native.md (Github Issue #282) -- Added new table matrix to the pg_partman.md documentation for which properties are handled via the special pg_partman template table depending on your version of PG. Please review this matrix carefully when updating the major version of PG to see which template properties may need to be applied to the real parent for inheritance to keep working as expected. -- Tablespace inheritance for PG12+ is now handled via the real parent table of the partition set, no longer via the pg_partman template table. Note that tablespaces for primary/unique keys that are not part of the partition key must still be handled via the template where those indexes are defined. For PG11 and earlier, tablespace inheritance must still be handled via the template table. If you are upgrading from PG11 or earlier to PG12+, ensure the tablespace is properly set on the parent table for inheritance to work as expected. (Github Issue #274) -- Added new function dump_partitioned_table_definition() to provide a means of replaying partition setup statements in another database or during a dump/restore. Thanks to James Coleman (jcoleman) for providing this new feature! (Github Issue #260, PR #291) -- BUG FIXES -- ========= -- Fixed maintenance runs with retention, or direct calls to drop_partition*() functions, failing if there were foreign keys pointing to the child table that was to be dropped. (Github Issue #294) -- Fixed partition_data*() functions failing if they are run in the same session multiple times. Temporary tables were not being cleaned up properly. (Github Issue #295) -- Changed child_end_time value of internal show_partition_info() function to show the non-inclusive end time boundary value. Previously it would subtract one second to try and show the actual values being stored in the partition, but this was causing issues trying to build boundary values when trying to migrate to native partitioning. This was previously an undocumented function, so its API was not guaranteed to be stable. It is now documented so any further changes will be fully documented. CREATE OR REPLACE FUNCTION @extschema@.show_partition_info(p_child_table text , p_partition_interval text DEFAULT NULL , p_parent_table text DEFAULT NULL , OUT child_start_time timestamptz , OUT child_end_time timestamptz , OUT child_start_id bigint , OUT child_end_id bigint , OUT suffix text) RETURNS record LANGUAGE plpgsql STABLE AS $$ DECLARE v_child_schema text; v_child_tablename text; v_control text; v_control_type text; v_datetime_string text; v_epoch text; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_table text; v_partition_interval text; v_partition_type text; v_quarter text; v_suffix text; v_suffix_position int; v_year text; BEGIN /* * Show the data boundries for a given child table as well as the suffix that will be used. * Passing the parent table argument improves performance by avoiding a catalog lookup. * Passing an interval lets you set one different than the default configured one if desired. */ SELECT current_setting('search_path') INTO v_old_search_path; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); SELECT n.nspname, c.relname INTO v_child_schema, v_child_tablename FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = split_part(p_child_table, '.', 1)::name AND c.relname = split_part(p_child_table, '.', 2)::name; IF v_child_tablename IS NULL THEN EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RAISE EXCEPTION 'Child table given does not exist (%)', p_child_table; END IF; IF p_parent_table IS NULL THEN SELECT n.nspname||'.'|| c.relname INTO v_parent_table FROM pg_catalog.pg_inherits h JOIN pg_catalog.pg_class c ON c.oid = h.inhparent JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE h.inhrelid::regclass = p_child_table::regclass; ELSE v_parent_table := p_parent_table; END IF; IF p_partition_interval IS NULL THEN SELECT control, partition_interval, partition_type, datetime_string, epoch INTO v_control, v_partition_interval, v_partition_type, v_datetime_string, v_epoch FROM @extschema@.part_config WHERE parent_table = v_parent_table; ELSE v_partition_interval := p_partition_interval; SELECT control, partition_type, datetime_string, epoch INTO v_control, v_partition_type, v_datetime_string, v_epoch FROM @extschema@.part_config WHERE parent_table = v_parent_table; END IF; IF v_control IS NULL THEN RAISE EXCEPTION 'Parent table of given child not managed by pg_partman: %', v_parent_table; END IF; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_child_schema, v_child_tablename, v_control); v_suffix_position := (length(v_child_tablename) - position('p_' in reverse(v_child_tablename))) + 2; v_suffix := substring(v_child_tablename from v_suffix_position); IF v_control_type = 'time' OR (v_control_type = 'id' AND v_epoch <> 'none') THEN IF v_partition_interval::interval <> '3 months' OR (v_partition_interval::interval = '3 months' AND v_partition_type = 'time-custom') THEN child_start_time := to_timestamp(v_suffix, v_datetime_string); ELSE -- to_timestamp doesn't recognize 'Q' date string formater. Handle it v_year := split_part(v_suffix, 'q', 1); v_quarter := split_part(v_suffix, 'q', 2); CASE WHEN v_quarter = '1' THEN child_start_time := to_timestamp(v_year || '-01-01', 'YYYY-MM-DD'); WHEN v_quarter = '2' THEN child_start_time := to_timestamp(v_year || '-04-01', 'YYYY-MM-DD'); WHEN v_quarter = '3' THEN child_start_time := to_timestamp(v_year || '-07-01', 'YYYY-MM-DD'); WHEN v_quarter = '4' THEN child_start_time := to_timestamp(v_year || '-10-01', 'YYYY-MM-DD'); ELSE -- handle case when partition name did not use "q" convetion child_start_time := to_timestamp(v_suffix, v_datetime_string); END CASE; END IF; child_end_time := (child_start_time + v_partition_interval::interval); ELSIF v_control_type = 'id' THEN child_start_id := v_suffix::bigint; child_end_id := (child_start_id + v_partition_interval::bigint) - 1; ELSE RAISE EXCEPTION 'Invalid partition type encountered in show_partition_info()'; END IF; suffix = v_suffix; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN; END $$; CREATE OR REPLACE FUNCTION @extschema@.inherit_template_properties (p_parent_table text, p_child_schema text, p_child_tablename text) RETURNS boolean LANGUAGE plpgsql AS $$ DECLARE v_child_relkind char; v_child_schema text; v_child_tablename text; v_child_unlogged char; v_dupe_found boolean := false; v_fk_list record; v_index_list record; v_inherit_fk boolean; v_parent_index_list record; v_parent_oid oid; v_parent_table text; v_sql text; v_template_oid oid; v_template_schemaname text; v_template_table text; v_template_tablename name; v_template_tablespace name; v_template_unlogged char; BEGIN /* * Function to inherit the properties of the template table to newly created child tables. * Currently used for PostgreSQL 10 to inherit indexes and FKs since that is not natively available * For PG11, used to inherit non-partition-key unique indexes & primary keys */ SELECT parent_table, template_table, inherit_fk INTO v_parent_table, v_template_table, v_inherit_fk FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF v_parent_table IS NULL THEN RAISE EXCEPTION 'Given parent table has no configuration in pg_partman: %', p_parent_table; ELSIF v_template_table IS NULL THEN RAISE EXCEPTION 'No template table set in configuration for given parent table: %', p_parent_table; END IF; SELECT c.oid INTO v_parent_oid FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = split_part(p_parent_table, '.', 1)::name AND c.relname = split_part(p_parent_table, '.', 2)::name; IF v_parent_oid IS NULL THEN RAISE EXCEPTION 'Unable to find given parent table in system catalogs: %', p_parent_table; END IF; SELECT n.nspname, c.relname, c.relkind INTO v_child_schema, v_child_tablename, v_child_relkind FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = p_child_schema::name AND c.relname = p_child_tablename::name; IF v_child_tablename IS NULL THEN RAISE EXCEPTION 'Unable to find given child table in system catalogs: %.%', v_child_schema, v_child_tablename; END IF; IF v_child_relkind = 'p' THEN -- Subpartitioned parent, do not apply properties RAISE DEBUG 'inherit_template_properties: found given child is subpartition parent, so properties not inherited'; RETURN false; END IF; v_template_schemaname := split_part(v_template_table, '.', 1)::name; v_template_tablename := split_part(v_template_table, '.', 2)::name; SELECT c.oid, ts.spcname INTO v_template_oid, v_template_tablespace FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid LEFT OUTER JOIN pg_catalog.pg_tablespace ts ON c.reltablespace = ts.oid WHERE n.nspname = v_template_schemaname AND c.relname = v_template_tablename; IF v_template_oid IS NULL THEN RAISE EXCEPTION 'Unable to find configured template table in system catalogs: %', v_template_table; END IF; -- Index creation (Required for all indexes in PG10. Only for non-unique, non-partition key indexes in PG11) IF current_setting('server_version_num')::int >= 100000 THEN FOR v_index_list IN SELECT array_to_string(regexp_matches(pg_get_indexdef(indexrelid), ' USING .*'),',') AS statement , i.indisprimary , i.indisunique , ( SELECT array_agg( a.attname ORDER by x.r ) FROM pg_catalog.pg_attribute a JOIN ( SELECT k, row_number() over () as r FROM unnest(i.indkey) k ) as x ON a.attnum = x.k AND a.attrelid = i.indrelid ) AS indkey_names , c.relname AS index_name , ts.spcname AS tablespace_name FROM pg_catalog.pg_index i JOIN pg_catalog.pg_class c ON i.indexrelid = c.oid LEFT OUTER JOIN pg_catalog.pg_tablespace ts ON c.reltablespace = ts.oid WHERE i.indrelid = v_template_oid AND i.indisvalid ORDER BY 1 LOOP v_dupe_found := false; IF current_setting('server_version_num')::int >= 110000 THEN FOR v_parent_index_list IN SELECT array_to_string(regexp_matches(pg_get_indexdef(indexrelid), ' USING .*'),',') AS statement , i.indisprimary , ( SELECT array_agg( a.attname ORDER by x.r ) FROM pg_catalog.pg_attribute a JOIN ( SELECT k, row_number() over () as r FROM unnest(i.indkey) k ) as x ON a.attnum = x.k AND a.attrelid = i.indrelid ) AS indkey_names FROM pg_catalog.pg_index i WHERE i.indrelid = v_parent_oid AND i.indisvalid ORDER BY 1 LOOP IF v_parent_index_list.indisprimary AND v_index_list.indisprimary THEN IF v_parent_index_list.indkey_names = v_index_list.indkey_names THEN RAISE DEBUG 'Ignoring duplicate primary key on template table: % ', v_index_list.indkey_names; v_dupe_found := true; CONTINUE; -- only continue within this nested loop END IF; END IF; IF v_parent_index_list.statement = v_index_list.statement THEN RAISE DEBUG 'Ignoring duplicate index on template table: %', v_index_list.statement; v_dupe_found := true; CONTINUE; -- only continue within this nested loop END IF; END LOOP; -- end parent index loop END IF; -- End PG11 check IF v_dupe_found = true THEN -- Only used in PG11 and should skip trying to create indexes that already existed on the parent CONTINUE; END IF; IF v_index_list.indisprimary THEN v_sql := format('ALTER TABLE %I.%I ADD PRIMARY KEY (%s)' , v_child_schema , v_child_tablename , '"' || array_to_string(v_index_list.indkey_names, '","') || '"'); IF v_index_list.tablespace_name IS NOT NULL THEN v_sql := v_sql || format(' USING INDEX TABLESPACE %I', v_index_list.tablespace_name); END IF; RAISE DEBUG 'Create pk: %', v_sql; EXECUTE v_sql; ELSE -- statement column should be just the portion of the index definition that defines what it actually is v_sql := format('CREATE %s INDEX ON %I.%I %s', CASE WHEN v_index_list.indisunique = TRUE THEN 'UNIQUE' ELSE '' END, v_child_schema, v_child_tablename, v_index_list.statement); IF v_index_list.tablespace_name IS NOT NULL THEN v_sql := v_sql || format(' TABLESPACE %I', v_index_list.tablespace_name); END IF; RAISE DEBUG 'Create index: %', v_sql; EXECUTE v_sql; END IF; END LOOP; END IF; -- End index creation -- Foreign key creation (PG10 only) IF current_setting('server_version_num')::int >= 100000 AND current_setting('server_version_num')::int < 110000 THEN IF v_inherit_fk THEN FOR v_fk_list IN SELECT pg_get_constraintdef(con.oid) AS constraint_def FROM pg_catalog.pg_constraint con JOIN pg_catalog.pg_class c ON con.conrelid = c.oid WHERE c.oid = v_template_oid AND contype = 'f' LOOP v_sql := format('ALTER TABLE %I.%I ADD %s', v_child_schema, v_child_tablename, v_fk_list.constraint_def); RAISE DEBUG 'Create FK: %', v_sql; EXECUTE v_sql; END LOOP; END IF; END IF; -- End foreign key creation -- Tablespace inheritance on PG11 and earlier IF current_setting('server_version_num')::int < 120000 AND v_template_tablespace IS NOT NULL THEN v_sql := format('ALTER TABLE %I.%I SET TABLESPACE %I', v_child_schema, v_child_tablename, v_template_tablespace); RAISE DEBUG 'Alter tablespace: %', v_sql; EXECUTE v_sql; END IF; -- UNLOGGED status. Currently waiting on final stance of how native will handle this property being changed for its children. -- See release notes for v4.2.0 SELECT relpersistence INTO v_template_unlogged FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_template_schemaname AND c.relname = v_template_tablename; SELECT relpersistence INTO v_child_unlogged FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_child_schema::name AND c.relname = v_child_tablename::name; IF v_template_unlogged = 'u' AND v_child_unlogged = 'p' THEN v_sql := format ('ALTER TABLE %I.%I SET UNLOGGED', v_child_schema, v_child_tablename); RAISE DEBUG 'Alter UNLOGGED: %', v_sql; EXECUTE v_sql; ELSIF v_template_unlogged = 'p' AND v_child_unlogged = 'u' THEN v_sql := format ('ALTER TABLE %I.%I SET LOGGED', v_child_schema, v_child_tablename); RAISE DEBUG 'Alter UNLOGGED: %', v_sql; EXECUTE v_sql; END IF; RETURN true; END $$; CREATE OR REPLACE FUNCTION @extschema@.create_partition_time(p_parent_table text, p_partition_times timestamptz[], p_analyze boolean DEFAULT true, p_debug boolean DEFAULT false) RETURNS boolean LANGUAGE plpgsql AS $$ DECLARE ex_context text; ex_detail text; ex_hint text; ex_message text; v_all text[] := ARRAY['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER']; v_analyze boolean := FALSE; v_control text; v_control_type text; v_datetime_string text; v_epoch text; v_exists smallint; v_grantees text[]; v_hasoids boolean; v_inherit_privileges boolean; v_inherit_fk boolean; v_job_id bigint; v_jobmon boolean; v_jobmon_schema text; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_grant record; v_parent_schema text; v_parent_tablename text; v_part_col text; v_partition_created boolean := false; v_partition_name text; v_partition_suffix text; v_parent_tablespace text; v_partition_expression text; v_partition_interval interval; v_partition_timestamp_end timestamptz; v_partition_timestamp_start timestamptz; v_publications text[]; v_quarter text; v_revoke text; v_row record; v_sql text; v_step_id bigint; v_step_overflow_id bigint; v_sub_control text; v_sub_parent text; v_sub_partition_type text; v_sub_timestamp_max timestamptz; v_sub_timestamp_min timestamptz; v_template_table text; v_trunc_value text; v_time timestamptz; v_partition_type text; v_unlogged char; v_year text; BEGIN /* * Function to create a child table in a time-based partition set */ SELECT partition_type , control , partition_interval , epoch , inherit_fk , jobmon , datetime_string , template_table , publications , inherit_privileges INTO v_partition_type , v_control , v_partition_interval , v_epoch , v_inherit_fk , v_jobmon , v_datetime_string , v_template_table , v_publications , v_inherit_privileges FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF NOT FOUND THEN RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table; END IF; SELECT n.nspname, c.relname, t.spcname INTO v_parent_schema, v_parent_tablename, v_parent_tablespace FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid LEFT OUTER JOIN pg_catalog.pg_tablespace t ON c.reltablespace = t.oid WHERE n.nspname = split_part(p_parent_table, '.', 1)::name AND c.relname = split_part(p_parent_table, '.', 2)::name; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, v_control); IF v_control_type <> 'time' THEN IF (v_control_type = 'id' AND v_epoch = 'none') OR v_control_type <> 'id' THEN RAISE EXCEPTION 'Cannot run on partition set without time based control column or epoch flag set with an id column. Found control: %, epoch: %', v_control_type, v_epoch; END IF; END IF; SELECT current_setting('search_path') INTO v_old_search_path; IF v_jobmon THEN SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon'::name AND e.extnamespace = n.oid; IF v_jobmon_schema IS NOT NULL THEN v_new_search_path := '@extschema@,'||v_jobmon_schema||',pg_temp'; END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); -- Determine if this table is a child of a subpartition parent. If so, get limits of what child tables can be created based on parent suffix SELECT sub_min::timestamptz, sub_max::timestamptz INTO v_sub_timestamp_min, v_sub_timestamp_max FROM @extschema@.check_subpartition_limits(p_parent_table, 'time'); IF v_jobmon_schema IS NOT NULL THEN v_job_id := add_job(format('PARTMAN CREATE TABLE: %s', p_parent_table)); END IF; v_partition_expression := CASE WHEN v_epoch = 'seconds' THEN format('to_timestamp(%I)', v_control) WHEN v_epoch = 'milliseconds' THEN format('to_timestamp((%I/1000)::float)', v_control) ELSE format('%I', v_control) END; IF p_debug THEN RAISE NOTICE 'create_partition_time: v_partition_expression: %', v_partition_expression; END IF; FOREACH v_time IN ARRAY p_partition_times LOOP v_partition_timestamp_start := v_time; BEGIN v_partition_timestamp_end := v_time + v_partition_interval; EXCEPTION WHEN datetime_field_overflow THEN RAISE WARNING 'Attempted partition time interval is outside PostgreSQL''s supported time range. Child partition creation after time % skipped', v_time; v_step_overflow_id := add_step(v_job_id, 'Attempted partition time interval is outside PostgreSQL''s supported time range.'); PERFORM update_step(v_step_overflow_id, 'CRITICAL', 'Child partition creation after time '||v_time||' skipped'); CONTINUE; END; -- Do not create the child table if it's outside the bounds of the top parent. IF v_sub_timestamp_min IS NOT NULL THEN IF v_time < v_sub_timestamp_min OR v_time > v_sub_timestamp_max THEN CONTINUE; END IF; END IF; -- This suffix generation code is in partition_data_time() as well v_partition_suffix := to_char(v_time, v_datetime_string); v_partition_name := @extschema@.check_name_length(v_parent_tablename, v_partition_suffix, TRUE); -- Check if child exists. SELECT count(*) INTO v_exists FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_partition_name::name; IF v_exists > 0 THEN CONTINUE; END IF; -- Ensure analyze is run if a new partition is created. Otherwise if one isn't, will be false and analyze will be skipped v_analyze := TRUE; IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Creating new partition %s.%s with interval from %s to %s' , v_parent_schema , v_partition_name , v_partition_timestamp_start , v_partition_timestamp_end-'1sec'::interval)); END IF; v_sql := 'CREATE'; -- As of PG12, the unlogged/logged status of a native parent table cannot be changed via an ALTER TABLE in order to affect its children. -- As of v4.2x, the unlogged state will be managed via the template table SELECT relpersistence INTO v_unlogged FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name; IF v_unlogged = 'u' and v_partition_type != 'native' THEN v_sql := v_sql || ' UNLOGGED'; END IF; -- Close parentheses on LIKE are below due to differing requirements of native subpartitioning -- Same INCLUDING list is used in create_parent() v_sql := v_sql || format(' TABLE %I.%I (LIKE %I.%I INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING STORAGE INCLUDING COMMENTS ' , v_parent_schema , v_partition_name , v_parent_schema , v_parent_tablename); SELECT sub_partition_type, sub_control INTO v_sub_partition_type, v_sub_control FROM @extschema@.part_config_sub WHERE sub_parent = p_parent_table; IF v_sub_partition_type = 'native' THEN -- INCLUDING INDEXES isn't necessary for native partitioning. It isn't supported in v10 and -- for v11+ index inheritance is automatically handled when the partition is attached v_sql := v_sql || format(') PARTITION BY RANGE (%I) ', v_sub_control); ELSE v_sql := v_sql || format(' INCLUDING INDEXES) ', v_sub_control); END IF; IF current_setting('server_version_num')::int < 120000 THEN -- column removed from pgclass in pg12 SELECT relhasoids INTO v_hasoids FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name; IF v_hasoids IS TRUE THEN v_sql := v_sql || ' WITH (OIDS)'; END IF; END IF; IF p_debug THEN RAISE NOTICE 'create_partition_time v_sql: %', v_sql; END IF; EXECUTE v_sql; IF v_partition_type = 'native' THEN IF current_setting('server_version_num')::int >= 120000 THEN -- PG12 fixed tablespace marking on the parent of a native partition set -- Versions older than 12 handle tablespace setting via inherit_template_properties() call below IF v_parent_tablespace IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I SET TABLESPACE %I', v_parent_schema, v_partition_name, v_parent_tablespace); END IF; END IF; IF v_template_table IS NOT NULL THEN PERFORM @extschema@.inherit_template_properties(p_parent_table, v_parent_schema, v_partition_name); END IF; IF v_epoch = 'none' THEN -- Attach with normal, time-based values for native constraint EXECUTE format('ALTER TABLE %I.%I ATTACH PARTITION %I.%I FOR VALUES FROM (%L) TO (%L)' , v_parent_schema , v_parent_tablename , v_parent_schema , v_partition_name , v_partition_timestamp_start , v_partition_timestamp_end); ELSE -- Must attach with integer based values for native constraint and epoch IF v_epoch = 'seconds' THEN EXECUTE format('ALTER TABLE %I.%I ATTACH PARTITION %I.%I FOR VALUES FROM (%L) TO (%L)' , v_parent_schema , v_parent_tablename , v_parent_schema , v_partition_name , EXTRACT('epoch' FROM v_partition_timestamp_start) , EXTRACT('epoch' FROM v_partition_timestamp_end)); ELSIF v_epoch = 'milliseconds' THEN EXECUTE format('ALTER TABLE %I.%I ATTACH PARTITION %I.%I FOR VALUES FROM (%L) TO (%L)' , v_parent_schema , v_parent_tablename , v_parent_schema , v_partition_name , EXTRACT('epoch' FROM v_partition_timestamp_start) * 1000 , EXTRACT('epoch' FROM v_partition_timestamp_end) * 1000); END IF; -- Create secondary, time-based constraint since native's constraint is already integer based EXECUTE format('ALTER TABLE %I.%I ADD CONSTRAINT %I CHECK (%s >= %L AND %4$s < %6$L)' , v_parent_schema , v_partition_name , v_partition_name||'_partition_check' , v_partition_expression , v_partition_timestamp_start , v_partition_timestamp_end); END IF; ELSE -- non-native IF v_parent_tablespace IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I SET TABLESPACE %I', v_parent_schema, v_partition_name, v_parent_tablespace); END IF; -- Non-native always gets time-based constraint EXECUTE format('ALTER TABLE %I.%I ADD CONSTRAINT %I CHECK (%s >= %L AND %4$s < %6$L)' , v_parent_schema , v_partition_name , v_partition_name||'_partition_check' , v_partition_expression , v_partition_timestamp_start , v_partition_timestamp_end); IF v_epoch = 'seconds' THEN -- Non-native needs secondary, integer based constraint for epoch EXECUTE format('ALTER TABLE %I.%I ADD CONSTRAINT %I CHECK (%I >= %L AND %I < %L)' , v_parent_schema , v_partition_name , v_partition_name||'_partition_int_check' , v_control , EXTRACT('epoch' from v_partition_timestamp_start) , v_control , EXTRACT('epoch' from v_partition_timestamp_end) ); ELSIF v_epoch = 'milliseconds' THEN EXECUTE format('ALTER TABLE %I.%I ADD CONSTRAINT %I CHECK (%I >= %L AND %I < %L)' , v_parent_schema , v_partition_name , v_partition_name||'_partition_int_check' , v_control , EXTRACT('epoch' from v_partition_timestamp_start) * 1000 , v_control , EXTRACT('epoch' from v_partition_timestamp_end) * 1000); END IF; EXECUTE format('ALTER TABLE %I.%I INHERIT %I.%I' , v_parent_schema , v_partition_name , v_parent_schema , v_parent_tablename); -- If custom time, set extra config options. IF v_partition_type = 'time-custom' THEN INSERT INTO @extschema@.custom_time_partitions (parent_table, child_table, partition_range) VALUES ( p_parent_table, v_parent_schema||'.'||v_partition_name, tstzrange(v_partition_timestamp_start, v_partition_timestamp_end, '[)') ); END IF; -- Indexes cannot be created on the parent, so clustering cannot be used for native yet. PERFORM @extschema@.apply_cluster(v_parent_schema, v_parent_tablename, v_parent_schema, v_partition_name); -- Foreign keys to other tables not supported in native IF v_inherit_fk THEN PERFORM @extschema@.apply_foreign_keys(p_parent_table, v_parent_schema||'.'||v_partition_name, v_job_id); END IF; END IF; -- end native check -- NOTE: Privileges not automatically inherited for native. Only do so if config flag is set IF v_partition_type != 'native' OR (v_partition_type = 'native' AND v_inherit_privileges = TRUE) THEN PERFORM @extschema@.apply_privileges(v_parent_schema, v_parent_tablename, v_parent_schema, v_partition_name, v_job_id); END IF; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; -- Will only loop once and only if sub_partitioning is actually configured -- This seemed easier than assigning a bunch of variables then doing an IF condition FOR v_row IN SELECT sub_parent , sub_partition_type , sub_control , sub_partition_interval , sub_constraint_cols , sub_premake , sub_optimize_trigger , sub_optimize_constraint , sub_epoch , sub_inherit_fk , sub_retention , sub_retention_schema , sub_retention_keep_table , sub_retention_keep_index , sub_automatic_maintenance , sub_infinite_time_partitions , sub_jobmon , sub_trigger_exception_handling , sub_template_table , sub_inherit_privileges , sub_constraint_valid FROM @extschema@.part_config_sub WHERE sub_parent = p_parent_table LOOP IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Subpartitioning %s.%s', v_parent_schema, v_partition_name)); END IF; v_sql := format('SELECT @extschema@.create_parent( p_parent_table := %L , p_control := %L , p_type := %L , p_interval := %L , p_constraint_cols := %L , p_premake := %L , p_automatic_maintenance := %L , p_inherit_fk := %L , p_epoch := %L , p_template_table := %L , p_jobmon := %L )' , v_parent_schema||'.'||v_partition_name , v_row.sub_control , v_row.sub_partition_type , v_row.sub_partition_interval , v_row.sub_constraint_cols , v_row.sub_premake , v_row.sub_automatic_maintenance , v_row.sub_inherit_fk , v_row.sub_epoch , v_row.sub_template_table , v_row.sub_jobmon); IF p_debug THEN RAISE NOTICE 'create_partition_time (create_parent loop): %', v_sql; END IF; EXECUTE v_sql; UPDATE @extschema@.part_config SET retention_schema = v_row.sub_retention_schema , retention_keep_table = v_row.sub_retention_keep_table , retention_keep_index = v_row.sub_retention_keep_index , optimize_trigger = v_row.sub_optimize_trigger , optimize_constraint = v_row.sub_optimize_constraint , infinite_time_partitions = v_row.sub_infinite_time_partitions , trigger_exception_handling = v_row.sub_trigger_exception_handling , inherit_privileges = v_row.sub_inherit_privileges , constraint_valid = v_row.sub_constraint_valid WHERE parent_table = v_parent_schema||'.'||v_partition_name; END LOOP; -- end sub partitioning LOOP -- Manage additonal constraints if set PERFORM @extschema@.apply_constraints(p_parent_table, p_job_id := v_job_id, p_debug := p_debug); IF v_publications IS NOT NULL THEN -- NOTE: Publications currently not supported on parent table, but are supported on the table partitions if individually assigned. PERFORM @extschema@.apply_publications(p_parent_table, v_parent_schema, v_partition_name); END IF; v_partition_created := true; END LOOP; -- v_analyze is a local check if a new table is made. -- p_analyze is a parameter to say whether to run the analyze at all. Used by create_parent() to avoid long exclusive lock or run_maintenence() to avoid long creation runs. IF v_analyze AND p_analyze THEN IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Analyzing partition set: %s', p_parent_table)); END IF; EXECUTE format('ANALYZE %I.%I', v_parent_schema, v_parent_tablename); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END IF; IF v_jobmon_schema IS NOT NULL THEN IF v_partition_created = false THEN v_step_id := add_step(v_job_id, format('No partitions created for partition set: %s. Attempted intervals: %s', p_parent_table, p_partition_times)); PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; IF v_step_overflow_id IS NOT NULL THEN PERFORM fail_job(v_job_id); ELSE PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_partition_created; EXCEPTION WHEN OTHERS THEN GET STACKED DIAGNOSTICS ex_message = MESSAGE_TEXT, ex_context = PG_EXCEPTION_CONTEXT, ex_detail = PG_EXCEPTION_DETAIL, ex_hint = PG_EXCEPTION_HINT; IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NULL THEN EXECUTE format('SELECT %I.add_job(''PARTMAN CREATE TABLE: %s'')', v_jobmon_schema, p_parent_table) INTO v_job_id; EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before job logging started'')', v_jobmon_schema, v_job_id, p_parent_table) INTO v_step_id; ELSIF v_step_id IS NULL THEN EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before first step logged'')', v_jobmon_schema, v_job_id) INTO v_step_id; END IF; EXECUTE format('SELECT %I.update_step(%s, ''CRITICAL'', %L)', v_jobmon_schema, v_step_id, 'ERROR: '||coalesce(SQLERRM,'unknown')); EXECUTE format('SELECT %I.fail_job(%s)', v_jobmon_schema, v_job_id); END IF; RAISE EXCEPTION '% CONTEXT: % DETAIL: % HINT: %', ex_message, ex_context, ex_detail, ex_hint; END $$; CREATE OR REPLACE FUNCTION @extschema@.create_partition_id(p_parent_table text, p_partition_ids bigint[], p_analyze boolean DEFAULT true, p_debug boolean DEFAULT false) RETURNS boolean LANGUAGE plpgsql AS $$ DECLARE ex_context text; ex_detail text; ex_hint text; ex_message text; v_all text[] := ARRAY['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER']; v_analyze boolean := FALSE; v_control text; v_control_type text; v_exists text; v_grantees text[]; v_hasoids boolean; v_id bigint; v_inherit_fk boolean; v_inherit_privileges boolean; v_job_id bigint; v_jobmon boolean; v_jobmon_schema text; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_grant record; v_parent_schema text; v_parent_tablename text; v_parent_tablespace text; v_partition_interval bigint; v_partition_created boolean := false; v_partition_name text; v_partition_type text; v_publications text[]; v_revoke text; v_row record; v_sql text; v_step_id bigint; v_sub_control text; v_sub_partition_type text; v_sub_id_max bigint; v_sub_id_min bigint; v_template_table text; v_unlogged char; BEGIN /* * Function to create id partitions */ SELECT control , partition_type , partition_interval , inherit_fk , jobmon , template_table , publications , inherit_privileges INTO v_control , v_partition_type , v_partition_interval , v_inherit_fk , v_jobmon , v_template_table , v_publications , v_inherit_privileges FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF NOT FOUND THEN RAISE EXCEPTION 'ERROR: no config found for %', p_parent_table; END IF; SELECT n.nspname, c.relname, t.spcname INTO v_parent_schema, v_parent_tablename, v_parent_tablespace FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid LEFT OUTER JOIN pg_catalog.pg_tablespace t ON c.reltablespace = t.oid WHERE n.nspname = split_part(p_parent_table, '.', 1)::name AND c.relname = split_part(p_parent_table, '.', 2)::name; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, v_control); IF v_control_type <> 'id' THEN RAISE EXCEPTION 'ERROR: Given parent table is not set up for id/serial partitioning'; END IF; SELECT current_setting('search_path') INTO v_old_search_path; IF v_jobmon THEN SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon'::name AND e.extnamespace = n.oid; IF v_jobmon_schema IS NOT NULL THEN v_new_search_path := '@extschema@,'||v_jobmon_schema||',pg_temp'; END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); -- Determine if this table is a child of a subpartition parent. If so, get limits of what child tables can be created based on parent suffix SELECT sub_min::bigint, sub_max::bigint INTO v_sub_id_min, v_sub_id_max FROM @extschema@.check_subpartition_limits(p_parent_table, 'id'); IF v_jobmon_schema IS NOT NULL THEN v_job_id := add_job(format('PARTMAN CREATE TABLE: %s', p_parent_table)); END IF; FOREACH v_id IN ARRAY p_partition_ids LOOP -- Do not create the child table if it's outside the bounds of the top parent. IF v_sub_id_min IS NOT NULL THEN IF v_id < v_sub_id_min OR v_id > v_sub_id_max THEN CONTINUE; END IF; END IF; v_partition_name := @extschema@.check_name_length(v_parent_tablename, v_id::text, TRUE); -- If child table already exists, skip creation -- Have to check pg_class because if subpartitioned, table will not be in pg_tables SELECT c.relname INTO v_exists FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_partition_name::name; IF v_exists IS NOT NULL THEN CONTINUE; END IF; -- Ensure analyze is run if a new partition is created. Otherwise if one isn't, will be false and analyze will be skipped v_analyze := TRUE; IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Creating new partition '||v_partition_name||' with interval from '||v_id||' to '||(v_id + v_partition_interval)-1); END IF; v_sql := 'CREATE'; -- As of PG12, the unlogged/logged status of a native parent table cannot be changed via an ALTER TABLE in order to affect its children. -- As of v4.2x, the unlogged state will be managed via the template table SELECT relpersistence INTO v_unlogged FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name; IF v_unlogged = 'u' and v_partition_type != 'native' THEN v_sql := v_sql || ' UNLOGGED'; END IF; -- Close parentheses on LIKE are below due to differing requirements of native subpartitioning -- Same INCLUDING list is used in create_parent() v_sql := v_sql || format(' TABLE %I.%I (LIKE %I.%I INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING STORAGE INCLUDING COMMENTS ' , v_parent_schema , v_partition_name , v_parent_schema , v_parent_tablename); SELECT sub_partition_type, sub_control INTO v_sub_partition_type, v_sub_control FROM @extschema@.part_config_sub WHERE sub_parent = p_parent_table; IF v_sub_partition_type = 'native' THEN -- INCLUDING INDEXES isn't necessary for native partitioning. It isn't supported in v10 and -- for v11+ index inheritance is automatically handled when the partition is attached v_sql := v_sql || format(') PARTITION BY RANGE (%I) ', v_sub_control); ELSE v_sql := v_sql || format(' INCLUDING INDEXES) ', v_sub_control); END IF; IF current_setting('server_version_num')::int < 120000 THEN -- column removed from pgclass in pg12 SELECT relhasoids INTO v_hasoids FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name; IF v_hasoids IS TRUE THEN v_sql := v_sql || ' WITH (OIDS)'; END IF; END IF; IF p_debug THEN RAISE NOTICE 'create_partition_id v_sql: %', v_sql; END IF; EXECUTE v_sql; IF v_partition_type = 'native' THEN IF current_setting('server_version_num')::int >= 120000 THEN -- PG12 fixed tablespace marking on the parent of a native partition set -- Versions older than 12 handle tablespace setting via inherit_template_properties() call below IF v_parent_tablespace IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I SET TABLESPACE %I', v_parent_schema, v_partition_name, v_parent_tablespace); END IF; END IF; IF v_template_table IS NOT NULL THEN PERFORM @extschema@.inherit_template_properties(p_parent_table, v_parent_schema, v_partition_name); END IF; EXECUTE format('ALTER TABLE %I.%I ATTACH PARTITION %I.%I FOR VALUES FROM (%L) TO (%L)' , v_parent_schema , v_parent_tablename , v_parent_schema , v_partition_name , v_id , v_id + v_partition_interval); ELSE -- non-native IF v_parent_tablespace IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I SET TABLESPACE %I', v_parent_schema, v_partition_name, v_parent_tablespace); END IF; EXECUTE format('ALTER TABLE %I.%I ADD CONSTRAINT %I CHECK (%I >= %s AND %I < %s )' , v_parent_schema , v_partition_name , v_partition_name||'_partition_check' , v_control , v_id , v_control , v_id + v_partition_interval); EXECUTE format('ALTER TABLE %I.%I INHERIT %I.%I', v_parent_schema, v_partition_name, v_parent_schema, v_parent_tablename); -- Indexes cannot be created on the parent, so clustering cannot be used for native yet. PERFORM @extschema@.apply_cluster(v_parent_schema, v_parent_tablename, v_parent_schema, v_partition_name); -- Foreign keys to other tables not supported on native parent tables IF v_inherit_fk THEN PERFORM @extschema@.apply_foreign_keys(p_parent_table, v_parent_schema||'.'||v_partition_name, v_job_id); END IF; END IF; -- NOTE: Privileges not automatically inherited for native. Only do so if config flag is set IF v_partition_type != 'native' OR (v_partition_type = 'native' AND v_inherit_privileges = TRUE) THEN PERFORM @extschema@.apply_privileges(v_parent_schema, v_parent_tablename, v_parent_schema, v_partition_name, v_job_id); END IF; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; -- Will only loop once and only if sub_partitioning is actually configured -- This seemed easier than assigning a bunch of variables then doing an IF condition FOR v_row IN SELECT sub_parent , sub_partition_type , sub_control , sub_partition_interval , sub_constraint_cols , sub_premake , sub_optimize_trigger , sub_optimize_constraint , sub_epoch , sub_inherit_fk , sub_retention , sub_retention_schema , sub_retention_keep_table , sub_retention_keep_index , sub_automatic_maintenance , sub_infinite_time_partitions , sub_jobmon , sub_trigger_exception_handling , sub_template_table , sub_inherit_privileges , sub_constraint_valid FROM @extschema@.part_config_sub WHERE sub_parent = p_parent_table LOOP IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Subpartitioning '||v_partition_name); END IF; v_sql := format('SELECT @extschema@.create_parent( p_parent_table := %L , p_control := %L , p_type := %L , p_interval := %L , p_constraint_cols := %L , p_premake := %L , p_automatic_maintenance := %L , p_inherit_fk := %L , p_epoch := %L , p_template_table := %L , p_jobmon := %L )' , v_parent_schema||'.'||v_partition_name , v_row.sub_control , v_row.sub_partition_type , v_row.sub_partition_interval , v_row.sub_constraint_cols , v_row.sub_premake , v_row.sub_automatic_maintenance , v_row.sub_inherit_fk , v_row.sub_epoch , v_row.sub_template_table , v_row.sub_jobmon); EXECUTE v_sql; UPDATE @extschema@.part_config SET retention_schema = v_row.sub_retention_schema , retention_keep_table = v_row.sub_retention_keep_table , retention_keep_index = v_row.sub_retention_keep_index , optimize_trigger = v_row.sub_optimize_trigger , optimize_constraint = v_row.sub_optimize_constraint , infinite_time_partitions = v_row.sub_infinite_time_partitions , trigger_exception_handling = v_row.sub_trigger_exception_handling , inherit_privileges = v_row.sub_inherit_privileges , constraint_valid = v_row.sub_constraint_valid WHERE parent_table = v_parent_schema||'.'||v_partition_name; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END LOOP; -- end sub partitioning LOOP -- Manage additonal constraints if set PERFORM @extschema@.apply_constraints(p_parent_table, p_job_id := v_job_id, p_debug := p_debug); IF v_publications IS NOT NULL THEN -- NOTE: Publications currently not supported on parent table, but are supported on the table partitions if individually assigned. PERFORM @extschema@.apply_publications(p_parent_table, v_parent_schema, v_partition_name); END IF; v_partition_created := true; END LOOP; -- v_analyze is a local check if a new table is made. -- p_analyze is a parameter to say whether to run the analyze at all. Used by create_parent() to avoid long exclusive lock or run_maintenence() to avoid long creation runs. IF v_analyze AND p_analyze THEN IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Analyzing partition set: %s', p_parent_table)); END IF; EXECUTE format('ANALYZE %I.%I', v_parent_schema, v_parent_tablename); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END IF; IF v_jobmon_schema IS NOT NULL THEN IF v_partition_created = false THEN v_step_id := add_step(v_job_id, format('No partitions created for partition set: %s', p_parent_table)); PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; PERFORM close_job(v_job_id); END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_partition_created; EXCEPTION WHEN OTHERS THEN GET STACKED DIAGNOSTICS ex_message = MESSAGE_TEXT, ex_context = PG_EXCEPTION_CONTEXT, ex_detail = PG_EXCEPTION_DETAIL, ex_hint = PG_EXCEPTION_HINT; IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NULL THEN EXECUTE format('SELECT %I.add_job(''PARTMAN CREATE TABLE: %s'')', v_jobmon_schema, p_parent_table) INTO v_job_id; EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before job logging started'')', v_jobmon_schema, v_job_id, p_parent_table) INTO v_step_id; ELSIF v_step_id IS NULL THEN EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before first step logged'')', v_jobmon_schema, v_job_id) INTO v_step_id; END IF; EXECUTE format('SELECT %I.update_step(%s, ''CRITICAL'', %L)', v_jobmon_schema, v_step_id, 'ERROR: '||coalesce(SQLERRM,'unknown')); EXECUTE format('SELECT %I.fail_job(%s)', v_jobmon_schema, v_job_id); END IF; RAISE EXCEPTION '% CONTEXT: % DETAIL: % HINT: %', ex_message, ex_context, ex_detail, ex_hint; END $$; CREATE OR REPLACE FUNCTION @extschema@.create_parent( p_parent_table text , p_control text , p_type text , p_interval text , p_constraint_cols text[] DEFAULT NULL , p_premake int DEFAULT 4 , p_automatic_maintenance text DEFAULT 'on' , p_start_partition text DEFAULT NULL , p_inherit_fk boolean DEFAULT true , p_epoch text DEFAULT 'none' , p_upsert text DEFAULT '' , p_publications text[] DEFAULT NULL , p_trigger_return_null boolean DEFAULT true , p_template_table text DEFAULT NULL , p_jobmon boolean DEFAULT true , p_debug boolean DEFAULT false) RETURNS boolean LANGUAGE plpgsql AS $$ DECLARE ex_context text; ex_detail text; ex_hint text; ex_message text; v_partattrs smallint[]; v_base_timestamp timestamptz; v_count int := 1; v_control_type text; v_control_exact_type text; v_datetime_string text; v_default_partition text; v_higher_control_type text; v_higher_parent_control text; v_higher_parent_schema text := split_part(p_parent_table, '.', 1); v_higher_parent_table text := split_part(p_parent_table, '.', 2); v_id_interval bigint; v_inherit_privileges boolean := false; v_job_id bigint; v_jobmon_schema text; v_last_partition_created boolean; v_max bigint; v_native_sub_control text; v_notnull boolean; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_owner text; v_parent_partition_id bigint; v_parent_partition_timestamp timestamptz; v_parent_schema text; v_parent_tablename text; v_parent_tablespace text; v_part_col text; v_part_type text; v_partition_time timestamptz; v_partition_time_array timestamptz[]; v_partition_id_array bigint[]; v_partstrat char; v_publication_exists text; v_row record; v_sql text; v_start_time timestamptz; v_starting_partition_id bigint; v_step_id bigint; v_step_overflow_id bigint; v_sub_parent text; v_success boolean := false; v_template_schema text; v_template_tablename text; v_time_interval interval; v_top_datetime_string text; v_top_parent_schema text := split_part(p_parent_table, '.', 1); v_top_parent_table text := split_part(p_parent_table, '.', 2); v_unlogged char; BEGIN /* * Function to turn a table into the parent of a partition set */ IF position('.' in p_parent_table) = 0 THEN RAISE EXCEPTION 'Parent table must be schema qualified'; END IF; IF p_upsert <> '' THEN IF current_setting('server_version_num')::int < 90500 THEN RAISE EXCEPTION 'INSERT ... ON CONFLICT (UPSERT) feature is only supported in PostgreSQL 9.5 and later'; END IF; IF p_type = 'native' THEN RAISE EXCEPTION 'Native partitioning does not currently support upsert. Use pg_partman''s partitioning methods instead if this is required'; END IF; END IF; SELECT n.nspname, c.relname, t.spcname, c.relpersistence INTO v_parent_schema, v_parent_tablename, v_parent_tablespace, v_unlogged FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid LEFT OUTER JOIN pg_catalog.pg_tablespace t ON c.reltablespace = t.oid WHERE n.nspname = split_part(p_parent_table, '.', 1)::name AND c.relname = split_part(p_parent_table, '.', 2)::name; IF v_parent_tablename IS NULL THEN RAISE EXCEPTION 'Unable to find given parent table in system catalogs. Please create parent table first: %', p_parent_table; END IF; SELECT attnotnull INTO v_notnull FROM pg_catalog.pg_attribute a JOIN pg_catalog.pg_class c ON a.attrelid = c.oid JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name AND a.attname = p_control::name; IF p_type <> 'native' AND (v_notnull = false OR v_notnull IS NULL) THEN RAISE EXCEPTION 'Control column given (%) for parent table (%) does not exist or must be set to NOT NULL', p_control, p_parent_table; END IF; SELECT general_type, exact_type INTO v_control_type, v_control_exact_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, p_control); IF v_control_type IS NULL THEN RAISE EXCEPTION 'pg_partman only supports partitioning of data types that are integer or date/timestamp. Supplied column is of type %', v_control_exact_type; END IF; IF (p_epoch <> 'none' AND v_control_type <> 'id') THEN RAISE EXCEPTION 'p_epoch can only be used with an integer based control column and does not work for native partitioning'; END IF; IF NOT @extschema@.check_partition_type(p_type) THEN RAISE EXCEPTION '% is not a valid partitioning type for pg_partman', p_type; END IF; IF p_type = 'native' THEN IF current_setting('server_version_num')::int < 100000 THEN RAISE EXCEPTION 'Native partitioning only available in PostgreSQL versions 10.0+'; END IF; -- Check if given parent table has been already set up as a partitioned table and is ranged SELECT p.partstrat, partattrs INTO v_partstrat, v_partattrs FROM pg_catalog.pg_partitioned_table p JOIN pg_catalog.pg_class c ON p.partrelid = c.oid JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_parent_tablename::name; IF v_partstrat <> 'r' OR v_partstrat IS NULL THEN RAISE EXCEPTION 'When using native partitioning, you must have created the given parent table as ranged (not list) partitioned already. Ex: CREATE TABLE ... PARITIONED BY RANGE ...)'; END IF; IF array_length(v_partattrs, 1) > 1 THEN RAISE NOTICE 'pg_partman only supports single column native partitioning at this time. Found % columns in given parent definition.', array_length(v_partattrs, 1); END IF; SELECT a.attname, t.typname INTO v_part_col, v_part_type FROM pg_attribute a JOIN pg_class c ON a.attrelid = c.oid JOIN pg_namespace n ON c.relnamespace = n.oid JOIN pg_type t ON a.atttypid = t.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_parent_tablename::name AND attnum IN (SELECT unnest(partattrs) FROM pg_partitioned_table p WHERE a.attrelid = p.partrelid); IF p_control <> v_part_col OR v_control_exact_type <> v_part_type THEN RAISE EXCEPTION 'Control column and type given in arguments (%, %) does not match the control column and type of the given native partition set (%, %)', p_control, v_control_exact_type, v_part_col, v_part_type; END IF; -- Check that control column is a usable type for pg_partman. IF v_control_type NOT IN ('time', 'id') THEN RAISE EXCEPTION 'Only date/time or integer types are allowed for the control column with native partitioning.'; END IF; -- Table to handle properties not natively inherited yet (indexes, fks, etc) IF p_template_table IS NULL THEN v_template_schema := '@extschema@'; v_template_tablename := @extschema@.check_name_length('template_'||v_parent_schema||'_'||v_parent_tablename); EXECUTE format('CREATE TABLE IF NOT EXISTS %I.%I (LIKE %I.%I)', '@extschema@', v_template_tablename, v_parent_schema, v_parent_tablename); SELECT pg_get_userbyid(c.relowner) INTO v_parent_owner FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_parent_tablename::name; EXECUTE format('ALTER TABLE %I.%I OWNER TO %I' , '@extschema@' , v_template_tablename , v_parent_owner); ELSE SELECT n.nspname, c.relname INTO v_template_schema, v_template_tablename FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = split_part(p_template_table, '.', 1)::name AND c.relname = split_part(p_template_table, '.', 2)::name; IF v_template_tablename IS NULL THEN RAISE EXCEPTION 'Unable to find given template table in system catalogs (%). Please create template table first or leave parameter NULL to have a default one created for you.', p_parent_table; END IF; END IF; ELSE -- if not native IF current_setting('server_version_num')::int >= 100000 THEN SELECT p.partstrat INTO v_partstrat FROM pg_catalog.pg_partitioned_table p JOIN pg_catalog.pg_class c ON p.partrelid = c.oid JOIN pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = v_parent_schema::name AND c.relname = v_parent_tablename::name; END IF; IF v_partstrat IS NOT NULL THEN RAISE EXCEPTION 'Given parent table has been set up with native partitioning therefore cannot be used with pg_partman''s other partitioning types. Either recreate table non-native or set the type argument to ''native'''; END IF; END IF; -- end if "native" check IF p_publications IS NOT NULL THEN IF current_setting('server_version_num')::int < 100000 THEN RAISE EXCEPTION 'p_publications argument not null but CREATE PUBLICATION is only available in PostgreSQL versions 10.0+'; END IF; IF p_publications = '{}' THEN RAISE EXCEPTION 'p_publications cannot be an empty set'; END IF; FOR v_row IN SELECT unnest(p_publications) AS pubname LOOP SELECT pubname INTO v_publication_exists FROM pg_catalog.pg_publication where pubname = v_row.pubname::name; IF v_publication_exists IS NULL THEN RAISE EXCEPTION 'Given publication name (%) does not exist in system catalog. Ensure it is created first.', v_row.pubname; END IF; END LOOP; END IF; -- Only inherit parent ownership/privileges on non-native sets by default -- This is false by default so initial partition set creation doesn't require superuser. IF p_type = 'native' THEN v_inherit_privileges = false; ELSE v_inherit_privileges = true; END IF; SELECT current_setting('search_path') INTO v_old_search_path; IF p_jobmon THEN SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon'::name AND e.extnamespace = n.oid; IF v_jobmon_schema IS NOT NULL THEN v_new_search_path := '@extschema@,'||v_jobmon_schema||',pg_temp'; END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); EXECUTE format('LOCK TABLE %I.%I IN ACCESS EXCLUSIVE MODE', v_parent_schema, v_parent_tablename); IF v_jobmon_schema IS NOT NULL THEN v_job_id := add_job(format('PARTMAN SETUP PARENT: %s', p_parent_table)); v_step_id := add_step(v_job_id, format('Creating initial partitions on new parent table: %s', p_parent_table)); END IF; -- If this parent table has siblings that are also partitioned (subpartitions), ensure this parent gets added to part_config_sub table so future maintenance will subpartition it -- Just doing in a loop to avoid having to assign a bunch of variables (should only run once, if at all; constraint should enforce only one value.) FOR v_row IN WITH parent_table AS ( SELECT h.inhparent AS parent_oid FROM pg_catalog.pg_inherits h JOIN pg_catalog.pg_class c ON h.inhrelid = c.oid JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name ), sibling_children AS ( SELECT i.inhrelid::regclass::text AS tablename FROM pg_inherits i JOIN parent_table p ON i.inhparent = p.parent_oid ) SELECT DISTINCT sub_partition_type , sub_control , sub_partition_interval , sub_constraint_cols , sub_premake , sub_inherit_fk , sub_retention , sub_retention_schema , sub_retention_keep_table , sub_retention_keep_index , sub_automatic_maintenance , sub_epoch , sub_optimize_trigger , sub_optimize_constraint , sub_infinite_time_partitions , sub_jobmon , sub_trigger_exception_handling , sub_upsert , sub_trigger_return_null , sub_template_table , sub_inherit_privileges , sub_constraint_valid FROM @extschema@.part_config_sub a JOIN sibling_children b on a.sub_parent = b.tablename LIMIT 1 LOOP INSERT INTO @extschema@.part_config_sub ( sub_parent , sub_partition_type , sub_control , sub_partition_interval , sub_constraint_cols , sub_premake , sub_inherit_fk , sub_retention , sub_retention_schema , sub_retention_keep_table , sub_retention_keep_index , sub_automatic_maintenance , sub_epoch , sub_optimize_trigger , sub_optimize_constraint , sub_infinite_time_partitions , sub_jobmon , sub_trigger_exception_handling , sub_upsert , sub_trigger_return_null , sub_template_table , sub_inherit_privileges , sub_constraint_valid) VALUES ( p_parent_table , v_row.sub_partition_type , v_row.sub_control , v_row.sub_partition_interval , v_row.sub_constraint_cols , v_row.sub_premake , v_row.sub_inherit_fk , v_row.sub_retention , v_row.sub_retention_schema , v_row.sub_retention_keep_table , v_row.sub_retention_keep_index , v_row.sub_automatic_maintenance , v_row.sub_epoch , v_row.sub_optimize_trigger , v_row.sub_optimize_constraint , v_row.sub_infinite_time_partitions , v_row.sub_jobmon , v_row.sub_trigger_exception_handling , v_row.sub_upsert , v_row.sub_trigger_return_null , v_row.sub_template_table , v_row.sub_inherit_privileges , v_row.sub_constraint_valid); -- Set this equal to sibling configs so that newly created child table -- privileges are set properly below during initial setup. -- This setting is special because it applies immediately to the new child -- tables of a given parent, not just during maintenance like most other settings. v_inherit_privileges = v_row.sub_inherit_privileges; END LOOP; IF v_control_type = 'time' OR (v_control_type = 'id' AND p_epoch <> 'none') THEN CASE WHEN p_interval = 'yearly' THEN v_time_interval := '1 year'; WHEN p_interval = 'quarterly' THEN v_time_interval := '3 months'; WHEN p_interval = 'monthly' THEN v_time_interval := '1 month'; WHEN p_interval = 'weekly' THEN v_time_interval := '1 week'; WHEN p_interval = 'daily' THEN v_time_interval := '1 day'; WHEN p_interval = 'hourly' THEN v_time_interval := '1 hour'; WHEN p_interval = 'half-hour' THEN v_time_interval := '30 mins'; WHEN p_interval = 'quarter-hour' THEN v_time_interval := '15 mins'; ELSE IF p_type <> 'native' THEN -- Reset for use as part_config type value below p_type = 'time-custom'; END IF; v_time_interval := p_interval::interval; IF v_time_interval < '1 second'::interval THEN RAISE EXCEPTION 'Partitioning interval must be 1 second or greater'; END IF; END CASE; -- First partition is either the min premake or p_start_partition v_start_time := COALESCE(p_start_partition::timestamptz, CURRENT_TIMESTAMP - (v_time_interval * p_premake)); IF v_time_interval >= '1 year' THEN v_base_timestamp := date_trunc('year', v_start_time); IF v_time_interval >= '10 years' THEN v_base_timestamp := date_trunc('decade', v_start_time); IF v_time_interval >= '100 years' THEN v_base_timestamp := date_trunc('century', v_start_time); IF v_time_interval >= '1000 years' THEN v_base_timestamp := date_trunc('millennium', v_start_time); END IF; -- 1000 END IF; -- 100 END IF; -- 10 END IF; -- 1 v_datetime_string := 'YYYY'; IF v_time_interval < '1 year' THEN IF p_interval = 'quarterly' THEN v_base_timestamp := date_trunc('quarter', v_start_time); v_datetime_string = 'YYYY"q"Q'; ELSE v_base_timestamp := date_trunc('month', v_start_time); v_datetime_string := v_datetime_string || '_MM'; END IF; IF v_time_interval < '1 month' THEN IF p_interval = 'weekly' THEN v_base_timestamp := date_trunc('week', v_start_time); v_datetime_string := 'IYYY"w"IW'; ELSE v_base_timestamp := date_trunc('day', v_start_time); v_datetime_string := v_datetime_string || '_DD'; END IF; IF v_time_interval < '1 day' THEN v_base_timestamp := date_trunc('hour', v_start_time); v_datetime_string := v_datetime_string || '_HH24MI'; IF v_time_interval < '1 minute' THEN v_base_timestamp := date_trunc('minute', v_start_time); v_datetime_string := v_datetime_string || 'SS'; END IF; -- minute END IF; -- day END IF; -- month END IF; -- year v_partition_time_array := array_append(v_partition_time_array, v_base_timestamp); LOOP -- If current loop value is less than or equal to the value of the max premake, add time to array. IF (v_base_timestamp + (v_time_interval * v_count)) < (CURRENT_TIMESTAMP + (v_time_interval * p_premake)) THEN BEGIN v_partition_time := (v_base_timestamp + (v_time_interval * v_count))::timestamptz; v_partition_time_array := array_append(v_partition_time_array, v_partition_time); EXCEPTION WHEN datetime_field_overflow THEN RAISE WARNING 'Attempted partition time interval is outside PostgreSQL''s supported time range. Child partition creation after time % skipped', v_partition_time; v_step_overflow_id := add_step(v_job_id, 'Attempted partition time interval is outside PostgreSQL''s supported time range.'); PERFORM update_step(v_step_overflow_id, 'CRITICAL', 'Child partition creation after time '||v_partition_time||' skipped'); CONTINUE; END; ELSE EXIT; -- all needed partitions added to array. Exit the loop. END IF; v_count := v_count + 1; END LOOP; INSERT INTO @extschema@.part_config ( parent_table , partition_type , partition_interval , epoch , control , premake , constraint_cols , datetime_string , automatic_maintenance , inherit_fk , jobmon , upsert , trigger_return_null , template_table , publications , inherit_privileges) VALUES ( p_parent_table , p_type , v_time_interval , p_epoch , p_control , p_premake , p_constraint_cols , v_datetime_string , p_automatic_maintenance , p_inherit_fk , p_jobmon , p_upsert , p_trigger_return_null , v_template_schema||'.'||v_template_tablename , p_publications , v_inherit_privileges); RAISE DEBUG 'create_parent: v_partition_time_array: %', v_partition_time_array; v_last_partition_created := @extschema@.create_partition_time(p_parent_table, v_partition_time_array, false); IF v_last_partition_created = false THEN -- This can happen with subpartitioning when future or past partitions prevent child creation because they're out of range of the parent -- First see if this parent is a subpartition managed by pg_partman WITH top_oid AS ( SELECT i.inhparent AS top_parent_oid FROM pg_catalog.pg_inherits i JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name ) SELECT n.nspname, c.relname INTO v_top_parent_schema, v_top_parent_table FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace JOIN top_oid t ON c.oid = t.top_parent_oid JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname; IF v_top_parent_table IS NOT NULL THEN -- If so create the lowest possible partition that is within the boundary of the parent SELECT child_start_time INTO v_parent_partition_timestamp FROM @extschema@.show_partition_info(p_parent_table, p_parent_table := v_top_parent_schema||'.'||v_top_parent_table); IF v_base_timestamp >= v_parent_partition_timestamp THEN WHILE v_base_timestamp >= v_parent_partition_timestamp LOOP v_base_timestamp := v_base_timestamp - v_time_interval; END LOOP; v_base_timestamp := v_base_timestamp + v_time_interval; -- add one back since while loop set it one lower than is needed ELSIF v_base_timestamp < v_parent_partition_timestamp THEN WHILE v_base_timestamp < v_parent_partition_timestamp LOOP v_base_timestamp := v_base_timestamp + v_time_interval; END LOOP; -- Don't need to remove one since new starting time will fit in top parent interval END IF; v_partition_time_array := NULL; v_partition_time_array := array_append(v_partition_time_array, v_base_timestamp); v_last_partition_created := @extschema@.create_partition_time(p_parent_table, v_partition_time_array, false); ELSE RAISE WARNING 'No child tables created. Check that all child tables did not already exist and may not have been part of partition set. Given parent has still been configured with pg_partman, but may not have expected children. Please review schema and config to confirm things are ok.'; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); IF v_step_overflow_id IS NOT NULL THEN PERFORM fail_job(v_job_id); ELSE PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_success; END IF; END IF; -- End v_last_partition IF IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', format('Time partitions premade: %s', p_premake)); END IF; END IF; IF v_control_type = 'id' AND p_epoch = 'none' THEN v_id_interval := p_interval::bigint; IF p_type <> 'native' AND v_id_interval < 10 THEN RAISE EXCEPTION 'Interval for serial, non-native partitioning must be greater than or equal to 10'; END IF; -- Check if parent table is a subpartition of an already existing id partition set managed by pg_partman. WHILE v_higher_parent_table IS NOT NULL LOOP -- initially set in DECLARE WITH top_oid AS ( SELECT i.inhparent AS top_parent_oid FROM pg_catalog.pg_inherits i JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE n.nspname = v_higher_parent_schema::name AND c.relname = v_higher_parent_table::name ) SELECT n.nspname, c.relname, p.control INTO v_higher_parent_schema, v_higher_parent_table, v_higher_parent_control FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace JOIN top_oid t ON c.oid = t.top_parent_oid JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname; IF v_higher_parent_table IS NOT NULL THEN SELECT general_type INTO v_higher_control_type FROM @extschema@.check_control_type(v_higher_parent_schema, v_higher_parent_table, v_higher_parent_control); IF v_higher_control_type <> 'id' THEN -- The parent above the p_parent_table parameter is not partitioned by ID -- so don't check for max values in parents that aren't partitioned by ID. -- This avoids missing child tables in subpartition sets that have differing ID data EXIT; END IF; -- v_top_parent initially set in DECLARE v_top_parent_schema := v_higher_parent_schema; v_top_parent_table := v_higher_parent_table; END IF; END LOOP; -- If custom start partition is set, use that. -- If custom start is not set and there is already data, start partitioning with the highest current value and ensure it's grabbed from highest top parent table IF p_start_partition IS NOT NULL THEN v_max := p_start_partition::bigint; ELSE v_sql := format('SELECT COALESCE(max(%I)::bigint, 0) FROM %I.%I LIMIT 1' , p_control , v_top_parent_schema , v_top_parent_table); EXECUTE v_sql INTO v_max; END IF; v_starting_partition_id := v_max - (v_max % v_id_interval); FOR i IN 0..p_premake LOOP -- Only make previous partitions if ID value is less than the starting value and positive (and custom start partition wasn't set) IF p_start_partition IS NULL AND (v_starting_partition_id - (v_id_interval*i)) > 0 AND (v_starting_partition_id - (v_id_interval*i)) < v_starting_partition_id THEN v_partition_id_array = array_append(v_partition_id_array, (v_starting_partition_id - v_id_interval*i)); END IF; v_partition_id_array = array_append(v_partition_id_array, (v_id_interval*i) + v_starting_partition_id); END LOOP; INSERT INTO @extschema@.part_config ( parent_table , partition_type , partition_interval , control , premake , constraint_cols , automatic_maintenance , inherit_fk , jobmon , upsert , trigger_return_null , template_table , publications , inherit_privileges) VALUES ( p_parent_table , p_type , v_id_interval , p_control , p_premake , p_constraint_cols , p_automatic_maintenance , p_inherit_fk , p_jobmon , p_upsert , p_trigger_return_null , v_template_schema||'.'||v_template_tablename , p_publications , v_inherit_privileges); v_last_partition_created := @extschema@.create_partition_id(p_parent_table, v_partition_id_array, false); IF v_last_partition_created = false THEN -- This can happen with subpartitioning when future or past partitions prevent child creation because they're out of range of the parent -- See if it's actually a subpartition of a parent id partition WITH top_oid AS ( SELECT i.inhparent AS top_parent_oid FROM pg_catalog.pg_inherits i JOIN pg_catalog.pg_class c ON c.oid = i.inhrelid JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace WHERE c.relname = v_parent_tablename::name AND n.nspname = v_parent_schema::name ) SELECT n.nspname||'.'||c.relname INTO v_top_parent_table FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace JOIN top_oid t ON c.oid = t.top_parent_oid JOIN @extschema@.part_config p ON p.parent_table = n.nspname||'.'||c.relname; IF v_top_parent_table IS NOT NULL THEN -- Create the lowest possible partition that is within the boundary of the parent SELECT child_start_id INTO v_parent_partition_id FROM @extschema@.show_partition_info(p_parent_table, p_parent_table := v_top_parent_table); IF v_starting_partition_id >= v_parent_partition_id THEN WHILE v_starting_partition_id >= v_parent_partition_id LOOP v_starting_partition_id := v_starting_partition_id - v_id_interval; END LOOP; v_starting_partition_id := v_starting_partition_id + v_id_interval; -- add one back since while loop set it one lower than is needed ELSIF v_starting_partition_id < v_parent_partition_id THEN WHILE v_starting_partition_id < v_parent_partition_id LOOP v_starting_partition_id := v_starting_partition_id + v_id_interval; END LOOP; -- Don't need to remove one since new starting id will fit in top parent interval END IF; v_partition_id_array = NULL; v_partition_id_array = array_append(v_partition_id_array, v_starting_partition_id); v_last_partition_created := @extschema@.create_partition_id(p_parent_table, v_partition_id_array, false); ELSE -- Currently unknown edge case if code gets here RAISE WARNING 'No child tables created. Check that all child tables did not already exist and may not have been part of partition set. Given parent has still been configured with pg_partman, but may not have expected children. Please review schema and config to confirm things are ok.'; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); IF v_step_overflow_id IS NOT NULL THEN PERFORM fail_job(v_job_id); ELSE PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_success; END IF; END IF; -- End v_last_partition_created IF END IF; -- End IF id IF p_type = 'native' AND current_setting('server_version_num')::int >= 110000 THEN -- Add default partition to native sets in PG11+ v_default_partition := @extschema@.check_name_length(v_parent_tablename, '_default', FALSE); v_sql := 'CREATE'; -- Left this here as reminder to revisit once native figures out how it is handling changing unlogged stats -- Currently handed via template table below /* IF v_unlogged = 'u' THEN v_sql := v_sql ||' UNLOGGED'; END IF; */ -- Same INCLUDING list is used in create_partition_*(). INDEXES is handled when partition is attached if it's supported. v_sql := v_sql || format(' TABLE %I.%I (LIKE %I.%I INCLUDING DEFAULTS INCLUDING CONSTRAINTS INCLUDING STORAGE INCLUDING COMMENTS)' , v_parent_schema, v_default_partition, v_parent_schema, v_parent_tablename); EXECUTE v_sql; v_sql := format('ALTER TABLE %I.%I ATTACH PARTITION %I.%I DEFAULT' , v_parent_schema, v_parent_tablename, v_parent_schema, v_default_partition); EXECUTE v_sql; IF current_setting('server_version_num')::int >= 120000 AND v_parent_tablespace IS NOT NULL THEN -- Tablespace managed via inherit_template_properties() call below if PG11 or earliser EXECUTE format('ALTER TABLE %I.%I SET TABLESPACE %I', v_parent_schema, v_default_partition, v_parent_tablespace); END IF; -- Manage template inherited properies PERFORM @extschema@.inherit_template_properties(p_parent_table, v_parent_schema, v_default_partition); END IF; IF p_type <> 'native' THEN IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Creating partition function'); END IF; IF v_control_type = 'time' OR (v_control_type = 'id' AND p_epoch <> 'none') THEN PERFORM @extschema@.create_function_time(p_parent_table, v_job_id); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Time function created'); END IF; ELSIF v_control_type = 'id' THEN PERFORM @extschema@.create_function_id(p_parent_table, v_job_id); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'ID function created'); END IF; END IF; IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Creating partition trigger'); END IF; PERFORM @extschema@.create_trigger(p_parent_table); END IF; -- end native check IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); IF v_step_overflow_id IS NOT NULL THEN PERFORM fail_job(v_job_id); ELSE PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); v_success := true; RETURN v_success; EXCEPTION WHEN OTHERS THEN GET STACKED DIAGNOSTICS ex_message = MESSAGE_TEXT, ex_context = PG_EXCEPTION_CONTEXT, ex_detail = PG_EXCEPTION_DETAIL, ex_hint = PG_EXCEPTION_HINT; IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NULL THEN EXECUTE format('SELECT %I.add_job(''PARTMAN CREATE PARENT: %s'')', v_jobmon_schema, p_parent_table) INTO v_job_id; EXECUTE format('SELECT %I.add_step(%s, ''Partition creation for table '||p_parent_table||' failed'')', v_jobmon_schema, v_job_id, p_parent_table) INTO v_step_id; ELSIF v_step_id IS NULL THEN EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before first step logged'')', v_jobmon_schema, v_job_id) INTO v_step_id; END IF; EXECUTE format('SELECT %I.update_step(%s, ''CRITICAL'', %L)', v_jobmon_schema, v_step_id, 'ERROR: '||coalesce(SQLERRM,'unknown')); EXECUTE format('SELECT %I.fail_job(%s)', v_jobmon_schema, v_job_id); END IF; RAISE EXCEPTION '% CONTEXT: % DETAIL: % HINT: %', ex_message, ex_context, ex_detail, ex_hint; END $$; CREATE FUNCTION @extschema@.partition_gap_fill(p_parent_table text) RETURNS integer LANGUAGE plpgsql AS $$ DECLARE v_child_created boolean; v_children_created_count int := 0; v_control text; v_control_type text; v_current_child_start_id bigint; v_current_child_start_timestamp timestamptz; v_expected_next_child_id bigint; v_expected_next_child_timestamp timestamptz; v_final_child_schemaname text; v_final_child_start_id bigint; v_final_child_start_timestamp timestamptz; v_final_child_tablename text; v_interval_id bigint; v_interval_time interval; v_previous_child_schemaname text; v_previous_child_tablename text; v_previous_child_start_id bigint; v_previous_child_start_timestamp timestamptz; v_parent_schema text; v_parent_table text; v_parent_tablename text; v_partition_interval text; v_row record; BEGIN SELECT parent_table, partition_interval, control INTO v_parent_table, v_partition_interval, v_control FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF v_parent_table IS NULL THEN RAISE EXCEPTION 'Given parent table has no configuration in pg_partman: %', p_parent_table; END IF; SELECT n.nspname, c.relname INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE n.nspname = split_part(p_parent_table, '.', 1)::name AND c.relname = split_part(p_parent_table, '.', 2)::name; IF v_parent_tablename IS NULL THEN RAISE EXCEPTION 'Unable to find given parent table in system catalogs. Ensure it is schema qualified: %', p_parent_table; END IF; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, v_control); SELECT partition_schemaname, partition_tablename INTO v_final_child_schemaname, v_final_child_tablename FROM @extschema@.show_partitions(v_parent_table, 'DESC') LIMIT 1; IF v_control_type = 'time' THEN v_interval_time := v_partition_interval::interval; SELECT child_start_time INTO v_final_child_start_timestamp FROM @extschema@.show_partition_info(format('%s', v_final_child_schemaname||'.'||v_final_child_tablename), p_parent_table := v_parent_table); FOR v_row IN SELECT partition_schemaname, partition_tablename FROM @extschema@.show_partitions(v_parent_table, 'ASC') LOOP RAISE DEBUG 'v_row.partition_tablename: %, v_final_child_start_timestamp: %', v_row.partition_tablename, v_final_child_start_timestamp; IF v_previous_child_tablename IS NULL THEN v_previous_child_schemaname := v_row.partition_schemaname; v_previous_child_tablename := v_row.partition_tablename; SELECT child_start_time INTO v_previous_child_start_timestamp FROM @extschema@.show_partition_info(format('%s', v_previous_child_schemaname||'.'||v_previous_child_tablename), p_parent_table := v_parent_table); CONTINUE; END IF; v_expected_next_child_timestamp := v_previous_child_start_timestamp + v_interval_time; RAISE DEBUG 'v_expected_next_child_timestamp: %', v_expected_next_child_timestamp; IF v_expected_next_child_timestamp = v_final_child_start_timestamp THEN EXIT; END IF; SELECT child_start_time INTO v_current_child_start_timestamp FROM @extschema@.show_partition_info(format('%s', v_row.partition_schemaname||'.'||v_row.partition_tablename), p_parent_table := v_parent_table); RAISE DEBUG 'v_current_child_start_timestamp: %', v_current_child_start_timestamp; IF v_expected_next_child_timestamp != v_current_child_start_timestamp THEN v_child_created := @extschema@.create_partition_time(v_parent_table, ARRAY[v_expected_next_child_timestamp]); IF v_child_created THEN v_children_created_count := v_children_created_count + 1; v_child_created := false; END IF; SELECT partition_schema, partition_table INTO v_previous_child_schemaname, v_previous_child_tablename FROM @extschema@.show_partition_name(v_parent_table, v_expected_next_child_timestamp::text); -- Need to stay in another inner loop until the next expected child timestamp matches the current one -- Once it does, exit. This means gap is filled. LOOP v_previous_child_start_timestamp := v_expected_next_child_timestamp; v_expected_next_child_timestamp := v_expected_next_child_timestamp + v_interval_time; IF v_expected_next_child_timestamp = v_current_child_start_timestamp THEN EXIT; ELSE RAISE DEBUG 'inner loop: v_previous_child_start_timestamp: %, v_expected_next_child_timestamp: %, v_children_created_count: %' , v_previous_child_start_timestamp, v_expected_next_child_timestamp, v_children_created_count; v_child_created := @extschema@.create_partition_time(v_parent_table, ARRAY[v_expected_next_child_timestamp]); IF v_child_created THEN v_children_created_count := v_children_created_count + 1; v_child_created := false; END IF; END IF; END LOOP; -- end expected child loop END IF; v_previous_child_schemaname := v_row.partition_schemaname; v_previous_child_tablename := v_row.partition_tablename; SELECT child_start_time INTO v_previous_child_start_timestamp FROM @extschema@.show_partition_info(format('%s', v_previous_child_schemaname||'.'||v_previous_child_tablename), p_parent_table := v_parent_table); END LOOP; -- end time loop ELSIF v_control_type = 'id' THEN v_interval_id := v_partition_interval::bigint; SELECT child_start_id INTO v_final_child_start_id FROM @extschema@.show_partition_info(format('%s', v_final_child_schemaname||'.'||v_final_child_tablename), p_parent_table := v_parent_table); FOR v_row IN SELECT partition_schemaname, partition_tablename FROM @extschema@.show_partitions(v_parent_table, 'ASC') LOOP RAISE DEBUG 'v_row.partition_tablename: %, v_final_child_start_id: %', v_row.partition_tablename, v_final_child_start_id; IF v_previous_child_tablename IS NULL THEN v_previous_child_schemaname := v_row.partition_schemaname; v_previous_child_tablename := v_row.partition_tablename; SELECT child_start_id INTO v_previous_child_start_id FROM @extschema@.show_partition_info(format('%s', v_previous_child_schemaname||'.'||v_previous_child_tablename), p_parent_table := v_parent_table); CONTINUE; END IF; v_expected_next_child_id := v_previous_child_start_id + v_interval_id; RAISE DEBUG 'v_expected_next_child_id: %', v_expected_next_child_id; IF v_expected_next_child_id = v_final_child_start_id THEN EXIT; END IF; SELECT child_start_id INTO v_current_child_start_id FROM @extschema@.show_partition_info(format('%s', v_row.partition_schemaname||'.'||v_row.partition_tablename), p_parent_table := v_parent_table); RAISE DEBUG 'v_current_child_start_id: %', v_current_child_start_id; IF v_expected_next_child_id != v_current_child_start_id THEN v_child_created := @extschema@.create_partition_id(v_parent_table, ARRAY[v_expected_next_child_id]); IF v_child_created THEN v_children_created_count := v_children_created_count + 1; v_child_created := false; END IF; SELECT partition_schema, partition_table INTO v_previous_child_schemaname, v_previous_child_tablename FROM @extschema@.show_partition_name(v_parent_table, v_expected_next_child_id::text); -- Need to stay in another inner loop until the next expected child id matches the current one -- Once it does, exit. This means gap is filled. LOOP v_previous_child_start_id := v_expected_next_child_id; v_expected_next_child_id := v_expected_next_child_id + v_interval_id; IF v_expected_next_child_id = v_current_child_start_id THEN EXIT; ELSE RAISE DEBUG 'inner loop: v_previous_child_start_id: %, v_expected_next_child_id: %, v_children_created_count: %' , v_previous_child_start_id, v_expected_next_child_id, v_children_created_count; v_child_created := @extschema@.create_partition_id(v_parent_table, ARRAY[v_expected_next_child_id]); IF v_child_created THEN v_children_created_count := v_children_created_count + 1; v_child_created := false; END IF; END IF; END LOOP; -- end expected child loop END IF; v_previous_child_schemaname := v_row.partition_schemaname; v_previous_child_tablename := v_row.partition_tablename; SELECT child_start_id INTO v_previous_child_start_id FROM @extschema@.show_partition_info(format('%s', v_previous_child_schemaname||'.'||v_previous_child_tablename), p_parent_table := v_parent_table); END LOOP; -- end id loop END IF; -- end time/id if RETURN v_children_created_count; END $$; CREATE FUNCTION @extschema@.dump_partitioned_table_definition( p_parent_table TEXT, p_ignore_template_table BOOLEAN DEFAULT false ) RETURNS TEXT LANGUAGE PLPGSQL STABLE AS $$ DECLARE v_create_parent_definition TEXT; v_update_part_config_definition TEXT; -- Columns from part_config table. v_parent_table TEXT; -- NOT NULL v_control TEXT; -- NOT NULL v_partition_type TEXT; -- NOT NULL v_partition_interval TEXT; -- NOT NULL v_constraint_cols TEXT[]; v_premake integer; -- NOT NULL v_optimize_trigger integer; -- NOT NULL v_optimize_constraint integer; -- NOT NULL v_epoch text; -- NOT NULL v_inherit_fk BOOLEAN; -- NOT NULL v_retention TEXT; v_retention_schema TEXT; v_retention_keep_table BOOLEAN; -- NOT NULL v_retention_keep_index BOOLEAN; -- NOT NULL v_infinite_time_partitions BOOLEAN; -- NOT NULL v_datetime_string TEXT; v_automatic_maintenance TEXT; -- NOT NULL v_jobmon BOOLEAN; -- NOT NULL v_sub_partition_set_full BOOLEAN; -- NOT NULL v_trigger_exception_handling BOOLEAN; v_upsert TEXT; -- NOT NULL v_trigger_return_null BOOLEAN; -- NOT NULL v_template_table TEXT; v_publications TEXT[]; v_inherit_privileges BOOLEAN; -- DEFAULT false v_constraint_valid BOOLEAN; -- DEFAULT true NOT NULL BEGIN SELECT pc.parent_table, pc.control, pc.partition_type, pc.partition_interval, pc.constraint_cols, pc.premake, pc.optimize_trigger, pc.optimize_constraint, pc.epoch, pc.inherit_fk, pc.retention, pc.retention_schema, pc.retention_keep_table, pc.retention_keep_index, pc.infinite_time_partitions, pc.datetime_string, pc.automatic_maintenance, pc.jobmon, pc.sub_partition_set_full, pc.trigger_exception_handling, pc.upsert, pc.trigger_return_null, pc.template_table, pc.publications, pc.inherit_privileges, pc.constraint_valid INTO v_parent_table, v_control, v_partition_type, v_partition_interval, v_constraint_cols, v_premake, v_optimize_trigger, v_optimize_constraint, v_epoch, v_inherit_fk, v_retention, v_retention_schema, v_retention_keep_table, v_retention_keep_index, v_infinite_time_partitions, v_datetime_string, v_automatic_maintenance, v_jobmon, v_sub_partition_set_full, v_trigger_exception_handling, v_upsert, v_trigger_return_null, v_template_table, v_publications, v_inherit_privileges, v_constraint_valid FROM @extschema@.part_config pc WHERE pc.parent_table = p_parent_table; IF v_partition_type = 'partman' THEN CASE WHEN v_partition_interval::INTERVAL = '1 year'::INTERVAL THEN v_partition_interval := 'yearly'; WHEN v_partition_interval::INTERVAL = '3 months'::INTERVAL THEN v_partition_interval := 'quarterly'; WHEN v_partition_interval::INTERVAL = '1 month'::INTERVAL THEN v_partition_interval := 'monthly'; WHEN v_partition_interval::INTERVAL = '1 week'::INTERVAL THEN v_partition_interval := 'weekly'; WHEN v_partition_interval::INTERVAL = '1 day'::INTERVAL THEN v_partition_interval := 'daily'; WHEN v_partition_interval::INTERVAL = '1 hour'::INTERVAL THEN v_partition_interval := 'hourly'; WHEN v_partition_interval::INTERVAL = '30 mins'::INTERVAL THEN v_partition_interval := 'half-hour'; WHEN v_partition_interval::INTERVAL = '15 mins'::INTERVAL THEN v_partition_interval := 'quarter-hour'; ELSE RAISE EXCEPTION 'Partitioning interval not recognized for "partman" partitioning type'; END CASE; END IF; IF v_partition_type = 'native' AND p_ignore_template_table THEN v_template_table := NULL; END IF; v_create_parent_definition := format( E'SELECT @extschema@.create_parent( \tp_parent_table := %L, \tp_control := %L, \tp_type := %L, \tp_interval := %L, \tp_constraint_cols := %L, \tp_premake := %s, \tp_automatic_maintenance := %L, \tp_inherit_fk := %L, \tp_epoch := %L, \tp_upsert := %L, \tp_publications := %L, \tp_trigger_return_null := %L, \tp_template_table := %L, \tp_jobmon := %L \t-- v_start_partition is intentionally ignored as there \t-- isn''t any obviously correct definition. );', v_parent_table, v_control, v_partition_type, v_partition_interval, v_constraint_cols, v_premake, v_automatic_maintenance, v_inherit_fk, v_epoch, v_upsert, v_publications, v_trigger_return_null, v_template_table, v_jobmon ); v_update_part_config_definition := format( E'UPDATE @extschema@.part_config SET \toptimize_trigger = %s, \toptimize_constraint = %s, \tretention = %L, \tretention_schema = %L, \tretention_keep_table = %L, \tretention_keep_index = %L, \tinfinite_time_partitions = %L, \tdatetime_string = %L, \tsub_partition_set_full = %L, \ttrigger_exception_handling = %L, \tinherit_privileges = %L, \tconstraint_valid = %L WHERE parent_table = %L;', v_optimize_trigger, v_optimize_constraint, v_retention, v_retention_schema, v_retention_keep_table, v_retention_keep_index, v_infinite_time_partitions, v_datetime_string, v_sub_partition_set_full, v_trigger_exception_handling, v_inherit_privileges, v_constraint_valid, v_parent_table ); RETURN concat_ws(E'\n', v_create_parent_definition, v_update_part_config_definition ); END $$; CREATE OR REPLACE FUNCTION @extschema@.drop_partition_time(p_parent_table text, p_retention interval DEFAULT NULL, p_keep_table boolean DEFAULT NULL, p_keep_index boolean DEFAULT NULL, p_retention_schema text DEFAULT NULL) RETURNS int LANGUAGE plpgsql AS $$ DECLARE ex_context text; ex_detail text; ex_hint text; ex_message text; v_adv_lock boolean; v_control text; v_control_type text; v_count int; v_datetime_string text; v_drop_count int := 0; v_epoch text; v_index record; v_job_id bigint; v_jobmon boolean; v_jobmon_schema text; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_schema text; v_parent_tablename text; v_partition_interval interval; v_partition_timestamp timestamptz; v_partition_type text; v_retention interval; v_retention_keep_index boolean; v_retention_keep_table boolean; v_retention_schema text; v_row record; v_step_id bigint; BEGIN /* * Function to drop child tables from a time-based partition set. * Options to move table to different schema, drop only indexes or actually drop the table from the database. */ v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman drop_partition_time')); IF v_adv_lock = 'false' THEN RAISE NOTICE 'drop_partition_time already running.'; RETURN 0; END IF; -- Allow override of configuration options IF p_retention IS NULL THEN SELECT partition_type , control , partition_interval::interval , epoch , retention::interval , retention_keep_table , retention_keep_index , datetime_string , retention_schema , jobmon INTO v_partition_type , v_control , v_partition_interval , v_epoch , v_retention , v_retention_keep_table , v_retention_keep_index , v_datetime_string , v_retention_schema , v_jobmon FROM @extschema@.part_config WHERE parent_table = p_parent_table AND retention IS NOT NULL; IF v_partition_interval IS NULL THEN RAISE EXCEPTION 'Configuration for given parent table with a retention period not found: %', p_parent_table; END IF; ELSE SELECT partition_type , partition_interval::interval , epoch , retention_keep_table , retention_keep_index , datetime_string , retention_schema , jobmon INTO v_partition_type , v_partition_interval , v_epoch , v_retention_keep_table , v_retention_keep_index , v_datetime_string , v_retention_schema , v_jobmon FROM @extschema@.part_config WHERE parent_table = p_parent_table; v_retention := p_retention; IF v_partition_interval IS NULL THEN RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table; END IF; END IF; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, v_control); IF v_control_type <> 'time' THEN IF (v_control_type = 'id' AND v_epoch = 'none') OR v_control_type <> 'id' THEN RAISE EXCEPTION 'Cannot run on partition set without time based control column or epoch flag set with an id column. Found control: %, epoch: %', v_control_type, v_epoch; END IF; END IF; SELECT current_setting('search_path') INTO v_old_search_path; IF v_jobmon THEN SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon'::name AND e.extnamespace = n.oid; IF v_jobmon_schema IS NOT NULL THEN v_new_search_path := '@extschema@,'||v_jobmon_schema||',pg_temp'; END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); IF p_keep_table IS NOT NULL THEN v_retention_keep_table = p_keep_table; END IF; IF p_keep_index IS NOT NULL THEN v_retention_keep_index = p_keep_index; END IF; IF p_retention_schema IS NOT NULL THEN v_retention_schema = p_retention_schema; END IF; SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_parent_table, '.', 1)::name AND tablename = split_part(p_parent_table, '.', 2)::name; -- Loop through child tables of the given parent -- Must go in ascending order to avoid dropping what may be the "last" partition in the set after dropping tables that match retention period FOR v_row IN SELECT partition_schemaname, partition_tablename FROM @extschema@.show_partitions(p_parent_table, 'ASC') LOOP -- pull out datetime portion of partition's tablename to make the next one SELECT child_start_time INTO v_partition_timestamp FROM @extschema@.show_partition_info(v_row.partition_schemaname||'.'||v_row.partition_tablename , v_partition_interval::text , p_parent_table); -- Add one interval since partition names contain the start of the constraint period IF v_retention < (CURRENT_TIMESTAMP - (v_partition_timestamp + v_partition_interval)) THEN -- Do not allow final partition to be dropped SELECT count(*) INTO v_count FROM @extschema@.show_partitions(p_parent_table); IF v_count = 1 THEN RAISE WARNING 'Attempt to drop final partition in partition set % as part of retention policy. If you see this message multiple times for the same table, advise reviewing retention policy and/or data entry into the partition set. Also consider setting "infinite_time_partitions = true" if there are large gaps in data insertion.).', p_parent_table; CONTINUE; END IF; -- Only create a jobmon entry if there's actual retention work done IF v_jobmon_schema IS NOT NULL AND v_job_id IS NULL THEN v_job_id := add_job(format('PARTMAN DROP TIME PARTITION: %s', p_parent_table)); END IF; IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Detach/Uninherit table %s.%s from %s' , v_row.partition_schemaname , v_row.partition_tablename , p_parent_table)); END IF; IF v_retention_keep_table = true THEN -- No need to detach partition before dropping since it's going away anyway -- Avoids issue of FKs not allowing detachment (Github Issue #294). IF v_partition_type = 'native' THEN EXECUTE format('ALTER TABLE %I.%I DETACH PARTITION %I.%I' , v_parent_schema , v_parent_tablename , v_row.partition_schemaname , v_row.partition_tablename); ELSE EXECUTE format('ALTER TABLE %I.%I NO INHERIT %I.%I' , v_row.partition_schemaname , v_row.partition_tablename , v_parent_schema , v_parent_tablename); END IF; END IF; IF v_partition_type = 'time-custom' THEN DELETE FROM @extschema@.custom_time_partitions WHERE parent_table = p_parent_table AND child_table = v_row.partition_schemaname||'.'||v_row.partition_tablename; END IF; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; IF v_retention_schema IS NULL THEN IF v_retention_keep_table = false THEN IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Drop table %s.%s', v_row.partition_schemaname, v_row.partition_tablename)); END IF; EXECUTE format('DROP TABLE %I.%I CASCADE', v_row.partition_schemaname, v_row.partition_tablename); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; ELSIF v_retention_keep_index = false THEN IF v_partition_type = 'partman' OR ( v_partition_type = 'native' AND current_setting('server_version_num')::int < 110000) THEN -- Cannot drop child indexes on native partition sets in PG11+ FOR v_index IN WITH child_info AS ( SELECT c1.oid FROM pg_catalog.pg_class c1 JOIN pg_catalog.pg_namespace n1 ON c1.relnamespace = n1.oid WHERE c1.relname = v_row.partition_tablename::name AND n1.nspname = v_row.partition_schemaname::name ) SELECT c.relname as name , con.conname FROM pg_catalog.pg_index i JOIN pg_catalog.pg_class c ON i.indexrelid = c.oid LEFT JOIN pg_catalog.pg_constraint con ON i.indexrelid = con.conindid JOIN child_info ON i.indrelid = child_info.oid LOOP IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Drop index %s from %s.%s' , v_index.name , v_row.partition_schemaname , v_row.partition_tablename)); END IF; IF v_index.conname IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I DROP CONSTRAINT %I' , v_row.partition_schemaname , v_row.partition_tablename , v_index.conname); ELSE EXECUTE format('DROP INDEX %I.%I', v_parent_schema, v_index.name); END IF; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END LOOP; END IF; -- end native/11 check END IF; -- end v_retention_keep_index IF ELSE -- Move to new schema IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Moving table %s.%s to schema %s' , v_row.partition_schemaname , v_row.partition_tablename , v_retention_schema)); END IF; EXECUTE format('ALTER TABLE %I.%I SET SCHEMA %I', v_row.partition_schemaname, v_row.partition_tablename, v_retention_schema); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END IF; -- End retention schema if -- If child table is a subpartition, remove it from part_config & part_config_sub (should cascade due to FK) DELETE FROM @extschema@.part_config WHERE parent_table = v_row.partition_schemaname||'.'||v_row.partition_tablename; v_drop_count := v_drop_count + 1; END IF; -- End retention check IF END LOOP; -- End child table loop IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Finished partition drop maintenance'); PERFORM update_step(v_step_id, 'OK', format('%s partitions dropped.', v_drop_count)); PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_drop_count; EXCEPTION WHEN OTHERS THEN GET STACKED DIAGNOSTICS ex_message = MESSAGE_TEXT, ex_context = PG_EXCEPTION_CONTEXT, ex_detail = PG_EXCEPTION_DETAIL, ex_hint = PG_EXCEPTION_HINT; IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NULL THEN EXECUTE format('SELECT %I.add_job(''PARTMAN DROP TIME PARTITION: %s'')', v_jobmon_schema, p_parent_table) INTO v_job_id; EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before job logging started'')', v_jobmon_schema, v_job_id, p_parent_table) INTO v_step_id; ELSIF v_step_id IS NULL THEN EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before first step logged'')', v_jobmon_schema, v_job_id) INTO v_step_id; END IF; EXECUTE format('SELECT %I.update_step(%s, ''CRITICAL'', %L)', v_jobmon_schema, v_step_id, 'ERROR: '||coalesce(SQLERRM,'unknown')); EXECUTE format('SELECT %I.fail_job(%s)', v_jobmon_schema, v_job_id); END IF; RAISE EXCEPTION '% CONTEXT: % DETAIL: % HINT: %', ex_message, ex_context, ex_detail, ex_hint; END $$; CREATE OR REPLACE FUNCTION @extschema@.drop_partition_id(p_parent_table text, p_retention bigint DEFAULT NULL, p_keep_table boolean DEFAULT NULL, p_keep_index boolean DEFAULT NULL, p_retention_schema text DEFAULT NULL) RETURNS int LANGUAGE plpgsql AS $$ DECLARE ex_context text; ex_detail text; ex_hint text; ex_message text; v_adv_lock boolean; v_control text; v_control_type text; v_count int; v_drop_count int := 0; v_index record; v_job_id bigint; v_jobmon boolean; v_jobmon_schema text; v_max bigint; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_schema text; v_parent_tablename text; v_partition_interval bigint; v_partition_id bigint; v_partition_type text; v_retention bigint; v_retention_keep_index boolean; v_retention_keep_table boolean; v_retention_schema text; v_row record; v_row_max_id record; v_step_id bigint; BEGIN /* * Function to drop child tables from an id-based partition set. * Options to move table to different schema, drop only indexes or actually drop the table from the database. */ v_adv_lock := pg_try_advisory_xact_lock(hashtext('pg_partman drop_partition_id')); IF v_adv_lock = 'false' THEN RAISE NOTICE 'drop_partition_id already running.'; RETURN 0; END IF; IF p_retention IS NULL THEN SELECT partition_interval::bigint , partition_type , control , retention::bigint , retention_keep_table , retention_keep_index , retention_schema , jobmon INTO v_partition_interval , v_partition_type , v_control , v_retention , v_retention_keep_table , v_retention_keep_index , v_retention_schema , v_jobmon FROM @extschema@.part_config WHERE parent_table = p_parent_table AND retention IS NOT NULL; IF v_partition_interval IS NULL THEN RAISE EXCEPTION 'Configuration for given parent table with a retention period not found: %', p_parent_table; END IF; ELSE -- Allow override of configuration options SELECT partition_interval::bigint , partition_type , control , retention_keep_table , retention_keep_index , retention_schema , jobmon INTO v_partition_interval , v_partition_type , v_control , v_retention_keep_table , v_retention_keep_index , v_retention_schema , v_jobmon FROM @extschema@.part_config WHERE parent_table = p_parent_table; v_retention := p_retention; IF v_partition_interval IS NULL THEN RAISE EXCEPTION 'Configuration for given parent table not found: %', p_parent_table; END IF; END IF; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_parent_schema, v_parent_tablename, v_control); IF v_control_type <> 'id' THEN RAISE EXCEPTION 'Data type of control column in given partition set is not an integer type'; END IF; SELECT current_setting('search_path') INTO v_old_search_path; IF v_jobmon THEN SELECT nspname INTO v_jobmon_schema FROM pg_catalog.pg_namespace n, pg_catalog.pg_extension e WHERE e.extname = 'pg_jobmon'::name AND e.extnamespace = n.oid; IF v_jobmon_schema IS NOT NULL THEN v_new_search_path := '@extschema@,'||v_jobmon_schema||',pg_temp'; END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); IF p_keep_table IS NOT NULL THEN v_retention_keep_table = p_keep_table; END IF; IF p_keep_index IS NOT NULL THEN v_retention_keep_index = p_keep_index; END IF; IF p_retention_schema IS NOT NULL THEN v_retention_schema = p_retention_schema; END IF; SELECT schemaname, tablename INTO v_parent_schema, v_parent_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_parent_table, '.', 1)::name AND tablename = split_part(p_parent_table, '.', 2)::name; -- Loop through child tables starting from highest to get current max value in partition set -- Avoids doing a scan on entire partition set and/or getting any values accidentally in parent. FOR v_row_max_id IN SELECT partition_schemaname, partition_tablename FROM @extschema@.show_partitions(p_parent_table, 'DESC') LOOP EXECUTE format('SELECT max(%I) FROM %I.%I', v_control, v_row_max_id.partition_schemaname, v_row_max_id.partition_tablename) INTO v_max; IF v_max IS NOT NULL THEN EXIT; END IF; END LOOP; -- Loop through child tables of the given parent -- Must go in ascending order to avoid dropping what may be the "last" partition in the set after dropping tables that match retention period FOR v_row IN SELECT partition_schemaname, partition_tablename FROM @extschema@.show_partitions(p_parent_table, 'ASC') LOOP SELECT child_start_id INTO v_partition_id FROM @extschema@.show_partition_info(v_row.partition_schemaname||'.'||v_row.partition_tablename , v_partition_interval::text , p_parent_table); -- Add one interval since partition names contain the start of the constraint period IF v_retention <= (v_max - (v_partition_id + v_partition_interval)) THEN -- Do not allow final partition to be dropped SELECT count(*) INTO v_count FROM @extschema@.show_partitions(p_parent_table); IF v_count = 1 THEN RAISE WARNING 'Attempt to drop final partition in partition set % as part of retention policy. Advise reviewing retention policy and/or data entry into the partition set.', p_parent_table; CONTINUE; END IF; -- Only create a jobmon entry if there's actual retention work done IF v_jobmon_schema IS NOT NULL AND v_job_id IS NULL THEN v_job_id := add_job(format('PARTMAN DROP ID PARTITION: %s', p_parent_table)); END IF; IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Detach/Uninherit table %s.%s from %s', v_row.partition_schemaname, v_row.partition_tablename, p_parent_table)); END IF; IF v_retention_keep_table = true THEN -- No need to detach partition before dropping since it's going away anyway -- Avoids issue of FKs not allowing detachment (Github Issue #294). IF v_partition_type = 'native' THEN EXECUTE format('ALTER TABLE %I.%I DETACH PARTITION %I.%I' , v_parent_schema , v_parent_tablename , v_row.partition_schemaname , v_row.partition_tablename); ELSE EXECUTE format('ALTER TABLE %I.%I NO INHERIT %I.%I' , v_row.partition_schemaname , v_row.partition_tablename , v_parent_schema , v_parent_tablename); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END IF; END IF; IF v_retention_schema IS NULL THEN IF v_retention_keep_table = false THEN IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Drop table %s.%s', v_row.partition_schemaname, v_row.partition_tablename)); END IF; EXECUTE format('DROP TABLE %I.%I CASCADE', v_row.partition_schemaname, v_row.partition_tablename); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; ELSIF v_retention_keep_index = false THEN IF v_partition_type = 'partman' OR ( v_partition_type = 'native' AND current_setting('server_version_num')::int < 110000) THEN -- Cannot drop child indexes on native partition sets in PG11+ FOR v_index IN WITH child_info AS ( SELECT c1.oid FROM pg_catalog.pg_class c1 JOIN pg_catalog.pg_namespace n1 ON c1.relnamespace = n1.oid WHERE c1.relname = v_row.partition_tablename::name AND n1.nspname = v_row.partition_schema::name ) SELECT c.relname as name , con.conname FROM pg_catalog.pg_index i JOIN pg_catalog.pg_class c ON i.indexrelid = c.oid LEFT JOIN pg_catalog.pg_constraint con ON i.indexrelid = con.conindid JOIN child_info ON i.indrelid = child_info.oid LOOP IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Drop index %s from %s.%s' , v_index.name , v_row.partition_schemaname , v_row.partition_tablename)); END IF; IF v_index.conname IS NOT NULL THEN EXECUTE format('ALTER TABLE %I.%I DROP CONSTRAINT %I', v_row.partition_schemaname, v_row.partition_tablename, v_index.conname); ELSE EXECUTE format('DROP INDEX %I.%I', v_row.partition_schemaname, v_index.name); END IF; IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END LOOP; END IF; -- end native/11 check END IF; -- end v_retention_keep_index IF ELSE -- Move to new schema IF v_jobmon_schema IS NOT NULL THEN v_step_id := add_step(v_job_id, format('Moving table %s.%s to schema %s' , v_row.partition_schemaname , v_row.partition_tablename , v_retention_schema)); END IF; EXECUTE format('ALTER TABLE %I.%I SET SCHEMA %I' , v_row.partition_schemaname , v_row.partition_tablename , v_retention_schema); IF v_jobmon_schema IS NOT NULL THEN PERFORM update_step(v_step_id, 'OK', 'Done'); END IF; END IF; -- End retention schema if -- If child table is a subpartition, remove it from part_config & part_config_sub (should cascade due to FK) DELETE FROM @extschema@.part_config WHERE parent_table = v_row.partition_schemaname ||'.'||v_row.partition_tablename; v_drop_count := v_drop_count + 1; END IF; -- End retention check IF END LOOP; -- End child table loop IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NOT NULL THEN v_step_id := add_step(v_job_id, 'Finished partition drop maintenance'); PERFORM update_step(v_step_id, 'OK', format('%s partitions dropped.', v_drop_count)); PERFORM close_job(v_job_id); END IF; END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_drop_count; EXCEPTION WHEN OTHERS THEN GET STACKED DIAGNOSTICS ex_message = MESSAGE_TEXT, ex_context = PG_EXCEPTION_CONTEXT, ex_detail = PG_EXCEPTION_DETAIL, ex_hint = PG_EXCEPTION_HINT; IF v_jobmon_schema IS NOT NULL THEN IF v_job_id IS NULL THEN EXECUTE format('SELECT %I.add_job(''PARTMAN DROP ID PARTITION: %s'')', v_jobmon_schema, p_parent_table) INTO v_job_id; EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before job logging started'')', v_jobmon_schema, v_job_id, p_parent_table) INTO v_step_id; ELSIF v_step_id IS NULL THEN EXECUTE format('SELECT %I.add_step(%s, ''EXCEPTION before first step logged'')', v_jobmon_schema, v_job_id) INTO v_step_id; END IF; EXECUTE format('SELECT %I.update_step(%s, ''CRITICAL'', %L)', v_jobmon_schema, v_step_id, 'ERROR: '||coalesce(SQLERRM,'unknown')); EXECUTE format('SELECT %I.fail_job(%s)', v_jobmon_schema, v_job_id); END IF; RAISE EXCEPTION '% CONTEXT: % DETAIL: % HINT: %', ex_message, ex_context, ex_detail, ex_hint; END $$; CREATE OR REPLACE FUNCTION @extschema@.partition_data_id(p_parent_table text , p_batch_count int DEFAULT 1 , p_batch_interval bigint DEFAULT NULL , p_lock_wait numeric DEFAULT 0 , p_order text DEFAULT 'ASC' , p_analyze boolean DEFAULT true , p_source_table text DEFAULT NULL) RETURNS bigint LANGUAGE plpgsql AS $$ DECLARE v_control text; v_control_type text; v_current_partition_name text; v_default_exists boolean; v_default_schemaname text; v_default_tablename text; v_epoch text; v_lock_iter int := 1; v_lock_obtained boolean := FALSE; v_max_partition_id bigint; v_min_partition_id bigint; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_tablename text; v_partition_interval bigint; v_partition_id bigint[]; v_partition_type text; v_rowcount bigint; v_source_schemaname text; v_source_tablename text; v_sql text; v_start_control bigint; v_total_rows bigint := 0; BEGIN /* * Populate the child table(s) of an id-based partition set with old data from the original parent */ SELECT partition_interval::bigint , partition_type , control , epoch INTO v_partition_interval , v_partition_type , v_control , v_epoch FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF NOT FOUND THEN RAISE EXCEPTION 'ERROR: No entry in part_config found for given table: %', p_parent_table; END IF; SELECT schemaname, tablename INTO v_source_schemaname, v_source_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_parent_table, '.', 1)::name AND tablename = split_part(p_parent_table, '.', 2)::name; -- Preserve real parent tablename for use below v_parent_tablename := v_source_tablename; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_source_schemaname, v_source_tablename, v_control); IF v_control_type <> 'id' OR (v_control_type = 'id' AND v_epoch <> 'none') THEN RAISE EXCEPTION 'Control column for given partition set is not id/serial based or epoch flag is set for time-based partitioning.'; END IF; IF p_source_table IS NOT NULL THEN -- Set source table to user given source table instead of parent table v_source_schemaname := NULL; v_source_tablename := NULL; SELECT schemaname, tablename INTO v_source_schemaname, v_source_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_source_table, '.', 1)::name AND tablename = split_part(p_source_table, '.', 2)::name; IF v_source_tablename IS NULL THEN RAISE EXCEPTION 'Given source table does not exist in system catalogs: %', p_source_table; END IF; ELSIF v_partition_type = 'native' AND current_setting('server_version_num')::int >= 110000 THEN IF p_batch_interval IS NOT NULL AND p_batch_interval != v_partition_interval THEN -- This is true because all data for a given child table must be moved out of the default partition before the child table can be created. -- So cannot create the child table when only some of the data has been moved out of the default partition. RAISE EXCEPTION 'Custom intervals are not allowed when moving data out of the DEFAULT partition in a native set. Please leave p_interval/p_batch_interval parameters unset or NULL to allow use of partition set''s default partitioning interval.'; END IF; -- Set source table to default table if PG11+, p_source_table is not set, and it exists -- Otherwise just return with a DEBUG that no data source exists v_sql := format('SELECT n.nspname::text, c.relname::text FROM pg_catalog.pg_inherits h JOIN pg_catalog.pg_class c ON c.oid = h.inhrelid JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE h.inhparent = ''%I.%I''::regclass AND pg_get_expr(relpartbound, c.oid) = ''DEFAULT''' , v_source_schemaname , v_source_tablename); EXECUTE v_sql INTO v_default_schemaname, v_default_tablename; IF v_default_tablename IS NOT NULL THEN v_source_schemaname := v_default_schemaname; v_source_tablename := v_default_tablename; v_default_exists := true; EXECUTE format ('CREATE TEMP TABLE IF NOT EXISTS partman_temp_data_storage (LIKE %I.%I INCLUDING INDEXES) ON COMMIT DROP', v_source_schemaname, v_source_tablename); ELSE RAISE DEBUG 'No default table found when partition_data_id() was called'; RETURN v_total_rows; END IF; END IF; SELECT current_setting('search_path') INTO v_old_search_path; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); IF p_batch_interval IS NULL OR p_batch_interval > v_partition_interval THEN p_batch_interval := v_partition_interval; END IF; FOR i IN 1..p_batch_count LOOP IF p_order = 'ASC' THEN EXECUTE format('SELECT min(%I) FROM ONLY %I.%I', v_control, v_source_schemaname, v_source_tablename) INTO v_start_control; IF v_start_control IS NULL THEN EXIT; END IF; v_min_partition_id = v_start_control - (v_start_control % v_partition_interval); v_partition_id := ARRAY[v_min_partition_id]; -- Check if custom batch interval overflows current partition maximum IF (v_start_control + p_batch_interval) >= (v_min_partition_id + v_partition_interval) THEN v_max_partition_id := v_min_partition_id + v_partition_interval; ELSE v_max_partition_id := v_start_control + p_batch_interval; END IF; ELSIF p_order = 'DESC' THEN EXECUTE format('SELECT max(%I) FROM ONLY %I.%I', v_control, v_source_schemaname, v_source_tablename) INTO v_start_control; IF v_start_control IS NULL THEN EXIT; END IF; v_min_partition_id = v_start_control - (v_start_control % v_partition_interval); -- Must be greater than max value still in parent table since query below grabs < max v_max_partition_id := v_min_partition_id + v_partition_interval; v_partition_id := ARRAY[v_min_partition_id]; -- Make sure minimum doesn't underflow current partition minimum IF (v_start_control - p_batch_interval) >= v_min_partition_id THEN v_min_partition_id = v_start_control - p_batch_interval; END IF; ELSE RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC'; END IF; -- do some locking with timeout, if required IF p_lock_wait > 0 THEN v_lock_iter := 0; WHILE v_lock_iter <= 5 LOOP v_lock_iter := v_lock_iter + 1; BEGIN v_sql := format('SELECT * FROM ONLY %I.%I WHERE %I >= %s AND %I < %s FOR UPDATE NOWAIT' , v_source_schemaname , v_source_tablename , v_control , v_min_partition_id , v_control , v_max_partition_id); EXECUTE v_sql; v_lock_obtained := TRUE; EXCEPTION WHEN lock_not_available THEN PERFORM pg_sleep( p_lock_wait / 5.0 ); CONTINUE; END; EXIT WHEN v_lock_obtained; END LOOP; IF NOT v_lock_obtained THEN RETURN -1; END IF; END IF; v_current_partition_name := @extschema@.check_name_length(COALESCE(v_parent_tablename), v_min_partition_id::text, TRUE); IF v_default_exists THEN -- Child tables cannot be created in native partitioning if data that belongs to it exists in the default -- Have to move data out to temporary location, create child table, then move it back -- Temp table created above to avoid excessive temp creation in loop EXECUTE format('WITH partition_data AS ( DELETE FROM %1$I.%2$I WHERE %3$I >= %4$s AND %3$I < %5$s RETURNING *) INSERT INTO partman_temp_data_storage SELECT * FROM partition_data' , v_source_schemaname , v_source_tablename , v_control , v_min_partition_id , v_max_partition_id); PERFORM @extschema@.create_partition_id(p_parent_table, v_partition_id, p_analyze); EXECUTE format('WITH partition_data AS ( DELETE FROM partman_temp_data_storage RETURNING *) INSERT INTO %I.%I SELECT * FROM partition_data' , v_source_schemaname , v_current_partition_name); ELSE PERFORM @extschema@.create_partition_id(p_parent_table, v_partition_id, p_analyze); EXECUTE format('WITH partition_data AS ( DELETE FROM ONLY %1$I.%2$I WHERE %3$I >= %4$s AND %3$I < %5$s RETURNING *) INSERT INTO %1$I.%6$I SELECT * FROM partition_data' , v_source_schemaname , v_source_tablename , v_control , v_min_partition_id , v_max_partition_id , v_current_partition_name); END IF; GET DIAGNOSTICS v_rowcount = ROW_COUNT; v_total_rows := v_total_rows + v_rowcount; IF v_rowcount = 0 THEN EXIT; END IF; END LOOP; IF v_partition_type = 'partman' THEN PERFORM @extschema@.create_function_id(p_parent_table); END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_total_rows; END $$; CREATE OR REPLACE FUNCTION @extschema@.partition_data_time( p_parent_table text , p_batch_count int DEFAULT 1 , p_batch_interval interval DEFAULT NULL , p_lock_wait numeric DEFAULT 0 , p_order text DEFAULT 'ASC' , p_analyze boolean DEFAULT true , p_source_table text DEFAULT NULL) RETURNS bigint LANGUAGE plpgsql AS $$ DECLARE v_control text; v_control_type text; v_datetime_string text; v_current_partition_name text; v_default_exists boolean; v_default_schemaname text; v_default_tablename text; v_epoch text; v_last_partition text; v_lock_iter int := 1; v_lock_obtained boolean := FALSE; v_max_partition_timestamp timestamptz; v_min_partition_timestamp timestamptz; v_new_search_path text := '@extschema@,pg_temp'; v_old_search_path text; v_parent_tablename text; v_parent_tablename_real text; v_partition_expression text; v_partition_interval interval; v_partition_suffix text; v_partition_timestamp timestamptz[]; v_partition_type text; v_source_schemaname text; v_source_tablename text; v_rowcount bigint; v_sql text; v_start_control timestamptz; v_total_rows bigint := 0; BEGIN /* * Populate the child table(s) of a time-based partition set with old data from the original parent */ SELECT partition_type , partition_interval::interval , control , datetime_string , epoch INTO v_partition_type , v_partition_interval , v_control , v_datetime_string , v_epoch FROM @extschema@.part_config WHERE parent_table = p_parent_table; IF NOT FOUND THEN RAISE EXCEPTION 'ERROR: No entry in part_config found for given table: %', p_parent_table; END IF; SELECT schemaname, tablename INTO v_source_schemaname, v_source_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_parent_table, '.', 1)::name AND tablename = split_part(p_parent_table, '.', 2)::name; -- Preserve real parent tablename for use below v_parent_tablename := v_source_tablename; SELECT general_type INTO v_control_type FROM @extschema@.check_control_type(v_source_schemaname, v_source_tablename, v_control); IF v_control_type <> 'time' THEN IF (v_control_type = 'id' AND v_epoch = 'none') OR v_control_type <> 'id' THEN RAISE EXCEPTION 'Cannot run on partition set without time based control column or epoch flag set with an id column. Found control: %, epoch: %', v_control_type, v_epoch; END IF; END IF; -- Replace the parent variables with the source variables if using source table for child table data IF p_source_table IS NOT NULL THEN -- Set source table to user given source table instead of parent table v_source_schemaname := NULL; v_source_tablename := NULL; SELECT schemaname, tablename INTO v_source_schemaname, v_source_tablename FROM pg_catalog.pg_tables WHERE schemaname = split_part(p_source_table, '.', 1)::name AND tablename = split_part(p_source_table, '.', 2)::name; IF v_source_tablename IS NULL THEN RAISE EXCEPTION 'Given source table does not exist in system catalogs: %', p_source_table; END IF; ELSIF v_partition_type = 'native' AND current_setting('server_version_num')::int >= 110000 THEN IF p_batch_interval IS NOT NULL AND p_batch_interval != v_partition_interval THEN -- This is true because all data for a given child table must be moved out of the default partition before the child table can be created. -- So cannot create the child table when only some of the data has been moved out of the default partition. RAISE EXCEPTION 'Custom intervals are not allowed when moving data out of the DEFAULT partition in a native set. Please leave p_interval/p_batch_interval parameters unset or NULL to allow use of partition set''s default partitioning interval.'; END IF; -- Set source table to default table if PG11+, p_source_table is not set, and it exists -- Otherwise just return with a DEBUG that no data source exists v_sql := format('SELECT n.nspname::text, c.relname::text FROM pg_catalog.pg_inherits h JOIN pg_catalog.pg_class c ON c.oid = h.inhrelid JOIN pg_catalog.pg_namespace n ON c.relnamespace = n.oid WHERE h.inhparent = ''%I.%I''::regclass AND pg_get_expr(relpartbound, c.oid) = ''DEFAULT''' , v_source_schemaname , v_source_tablename); EXECUTE v_sql INTO v_default_schemaname, v_default_tablename; IF v_default_tablename IS NOT NULL THEN v_source_schemaname := v_default_schemaname; v_source_tablename := v_default_tablename; v_default_exists := true; EXECUTE format ('CREATE TEMP TABLE IF NOT EXISTS partman_temp_data_storage (LIKE %I.%I INCLUDING INDEXES) ON COMMIT DROP', v_source_schemaname, v_source_tablename); ELSE RAISE DEBUG 'No default table found when partition_data_id() was called'; RETURN v_total_rows; END IF; END IF; SELECT current_setting('search_path') INTO v_old_search_path; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_new_search_path, 'false'); IF p_batch_interval IS NULL OR p_batch_interval > v_partition_interval THEN p_batch_interval := v_partition_interval; END IF; SELECT partition_tablename INTO v_last_partition FROM @extschema@.show_partitions(p_parent_table, 'DESC') LIMIT 1; v_partition_expression := CASE WHEN v_epoch = 'seconds' THEN format('to_timestamp(%I)', v_control) WHEN v_epoch = 'milliseconds' THEN format('to_timestamp((%I/1000)::float)', v_control) ELSE format('%I', v_control) END; FOR i IN 1..p_batch_count LOOP IF p_order = 'ASC' THEN EXECUTE format('SELECT min(%s) FROM ONLY %I.%I', v_partition_expression, v_source_schemaname, v_source_tablename) INTO v_start_control; ELSIF p_order = 'DESC' THEN EXECUTE format('SELECT max(%s) FROM ONLY %I.%I', v_partition_expression, v_source_schemaname, v_source_tablename) INTO v_start_control; ELSE RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC'; END IF; IF v_start_control IS NULL THEN EXIT; END IF; IF v_partition_type = 'partman' THEN CASE WHEN v_partition_interval = '15 mins' THEN v_min_partition_timestamp := date_trunc('hour', v_start_control) + '15min'::interval * floor(date_part('minute', v_start_control) / 15.0); WHEN v_partition_interval = '30 mins' THEN v_min_partition_timestamp := date_trunc('hour', v_start_control) + '30min'::interval * floor(date_part('minute', v_start_control) / 30.0); WHEN v_partition_interval = '1 hour' THEN v_min_partition_timestamp := date_trunc('hour', v_start_control); WHEN v_partition_interval = '1 day' THEN v_min_partition_timestamp := date_trunc('day', v_start_control); WHEN v_partition_interval = '1 week' THEN v_min_partition_timestamp := date_trunc('week', v_start_control); WHEN v_partition_interval = '1 month' THEN v_min_partition_timestamp := date_trunc('month', v_start_control); WHEN v_partition_interval = '3 months' THEN v_min_partition_timestamp := date_trunc('quarter', v_start_control); WHEN v_partition_interval = '1 year' THEN v_min_partition_timestamp := date_trunc('year', v_start_control); END CASE; ELSIF v_partition_type IN ('time-custom', 'native') THEN SELECT child_start_time INTO v_min_partition_timestamp FROM @extschema@.show_partition_info(v_source_schemaname||'.'||v_last_partition , v_partition_interval::text , p_parent_table); v_max_partition_timestamp := v_min_partition_timestamp + v_partition_interval; LOOP IF v_start_control >= v_min_partition_timestamp AND v_start_control < v_max_partition_timestamp THEN EXIT; ELSE BEGIN IF v_start_control >= v_max_partition_timestamp THEN -- Keep going forward in time, checking if child partition time interval encompasses the current v_start_control value v_min_partition_timestamp := v_max_partition_timestamp; v_max_partition_timestamp := v_max_partition_timestamp + v_partition_interval; ELSE -- Keep going backwards in time, checking if child partition time interval encompasses the current v_start_control value v_max_partition_timestamp := v_min_partition_timestamp; v_min_partition_timestamp := v_min_partition_timestamp - v_partition_interval; END IF; EXCEPTION WHEN datetime_field_overflow THEN RAISE EXCEPTION 'Attempted partition time interval is outside PostgreSQL''s supported time range. Unable to create partition with interval before timestamp % ', v_min_partition_timestamp; END; END IF; END LOOP; END IF; v_partition_timestamp := ARRAY[v_min_partition_timestamp]; IF p_order = 'ASC' THEN -- Ensure batch interval given as parameter doesn't cause maximum to overflow the current partition maximum IF (v_start_control + p_batch_interval) >= (v_min_partition_timestamp + v_partition_interval) THEN v_max_partition_timestamp := v_min_partition_timestamp + v_partition_interval; ELSE v_max_partition_timestamp := v_start_control + p_batch_interval; END IF; ELSIF p_order = 'DESC' THEN -- Must be greater than max value still in parent table since query below grabs < max v_max_partition_timestamp := v_min_partition_timestamp + v_partition_interval; -- Ensure batch interval given as parameter doesn't cause minimum to underflow current partition minimum IF (v_start_control - p_batch_interval) >= v_min_partition_timestamp THEN v_min_partition_timestamp = v_start_control - p_batch_interval; END IF; ELSE RAISE EXCEPTION 'Invalid value for p_order. Must be ASC or DESC'; END IF; -- do some locking with timeout, if required IF p_lock_wait > 0 THEN v_lock_iter := 0; WHILE v_lock_iter <= 5 LOOP v_lock_iter := v_lock_iter + 1; BEGIN EXECUTE format('SELECT * FROM ONLY %I.%I WHERE %s >= %L AND %3$s < %5$L FOR UPDATE NOWAIT' , v_source_schemaname , v_source_tablename , v_partition_expression , v_min_partition_timestamp , v_max_partition_timestamp); v_lock_obtained := TRUE; EXCEPTION WHEN lock_not_available THEN PERFORM pg_sleep( p_lock_wait / 5.0 ); CONTINUE; END; EXIT WHEN v_lock_obtained; END LOOP; IF NOT v_lock_obtained THEN RETURN -1; END IF; END IF; -- This suffix generation code is in create_partition_time() as well v_partition_suffix := to_char(v_min_partition_timestamp, v_datetime_string); v_current_partition_name := @extschema@.check_name_length(v_parent_tablename, v_partition_suffix, TRUE); IF v_default_exists THEN -- Child tables cannot be created in native partitioning if data that belongs to it exists in the default -- Have to move data out to temporary location, create child table, then move it back -- Temp table created above to avoid excessive temp creation in loop EXECUTE format('WITH partition_data AS ( DELETE FROM %1$I.%2$I WHERE %3$I >= %4$L AND %3$I < %5$L RETURNING *) INSERT INTO partman_temp_data_storage SELECT * FROM partition_data' , v_source_schemaname , v_source_tablename , v_control , v_min_partition_timestamp , v_max_partition_timestamp); PERFORM @extschema@.create_partition_time(p_parent_table, v_partition_timestamp, p_analyze); EXECUTE format('WITH partition_data AS ( DELETE FROM partman_temp_data_storage RETURNING *) INSERT INTO %I.%I SELECT * FROM partition_data' , v_source_schemaname , v_current_partition_name); ELSE PERFORM @extschema@.create_partition_time(p_parent_table, v_partition_timestamp, p_analyze); EXECUTE format('WITH partition_data AS ( DELETE FROM ONLY %I.%I WHERE %s >= %L AND %3$s < %5$L RETURNING *) INSERT INTO %I.%I SELECT * FROM partition_data' , v_source_schemaname , v_source_tablename , v_partition_expression , v_min_partition_timestamp , v_max_partition_timestamp , v_source_schemaname , v_current_partition_name); END IF; GET DIAGNOSTICS v_rowcount = ROW_COUNT; v_total_rows := v_total_rows + v_rowcount; IF v_rowcount = 0 THEN EXIT; END IF; END LOOP; IF v_partition_type IN ('partman', 'time-custom') THEN PERFORM @extschema@.create_function_time(p_parent_table); END IF; EXECUTE format('SELECT set_config(%L, %L, %L)', 'search_path', v_old_search_path, 'false'); RETURN v_total_rows; END $$;