-- Tests related to distributed DDL commands on mx cluster

SELECT * FROM mx_ddl_table ORDER BY key;

-- CREATE INDEX
CREATE INDEX ddl_test_index ON mx_ddl_table(value);

CREATE INDEX CONCURRENTLY ddl_test_concurrent_index ON mx_ddl_table(value);

-- ADD COLUMN
ALTER TABLE mx_ddl_table ADD COLUMN version INTEGER;

-- SET DEFAULT
ALTER TABLE mx_ddl_table ALTER COLUMN version SET DEFAULT 1; 

SELECT master_modify_multiple_shards('UPDATE mx_ddl_table SET version=0.1 WHERE version IS NULL');

-- SET NOT NULL
ALTER TABLE mx_ddl_table ALTER COLUMN version SET NOT NULL;


-- See that the changes are applied on coordinator, worker tables and shards
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
SELECT "relname", "Column", "Type", "Definition" FROM index_attrs WHERE
    relname LIKE 'ddl_test%_index';

\c - - - :worker_1_port

-- make sure we don't break the following tests by hiding the shard names
SET citus.override_table_visibility TO FALSE;

SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
SELECT "relname", "Column", "Type", "Definition" FROM index_attrs WHERE
    relname LIKE 'ddl_test%_index';
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table_1220088'::regclass;
SELECT "relname", "Column", "Type", "Definition" FROM index_attrs WHERE
    relname LIKE 'ddl_test%_index_1220088';

\c - - - :worker_2_port

-- make sure we don't break the following tests by hiding the shard names
SET citus.override_table_visibility TO FALSE;

SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
SELECT "relname", "Column", "Type", "Definition" FROM index_attrs WHERE
    relname LIKE 'ddl_test%_index';
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table_1220089'::regclass;
SELECT "relname", "Column", "Type", "Definition" FROM index_attrs WHERE
    relname LIKE 'ddl_test%_index_1220089';

INSERT INTO mx_ddl_table VALUES (37, 78, 2);
INSERT INTO mx_ddl_table VALUES (38, 78);

-- Switch to the coordinator
\c - - - :master_port


-- SET DATA TYPE
ALTER TABLE mx_ddl_table ALTER COLUMN version SET DATA TYPE double precision;

INSERT INTO mx_ddl_table VALUES (78, 83, 2.1);

\c - - - :worker_1_port
SELECT * FROM mx_ddl_table ORDER BY key;

-- Switch to the coordinator
\c - - - :master_port

-- DROP INDEX
DROP INDEX ddl_test_index;

DROP INDEX CONCURRENTLY ddl_test_concurrent_index;

-- DROP DEFAULT
ALTER TABLE mx_ddl_table ALTER COLUMN version DROP DEFAULT;

-- DROP NOT NULL
ALTER TABLE mx_ddl_table ALTER COLUMN version DROP NOT NULL;

-- DROP COLUMN
ALTER TABLE mx_ddl_table DROP COLUMN version;


-- See that the changes are applied on coordinator, worker tables and shards
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
\di ddl_test*_index

\c - - - :worker_1_port

SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
\di ddl_test*_index
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table_1220088'::regclass;
\di ddl_test*_index_1220088

\c - - - :worker_2_port

SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table'::regclass;
\di ddl_test*_index
SELECT "Column", "Type", "Modifiers" FROM table_desc WHERE relid='mx_ddl_table_1220089'::regclass;
\di ddl_test*_index_1220089

-- Show that DDL commands are done within a two-phase commit transaction
\c - - - :master_port

CREATE INDEX ddl_test_index ON mx_ddl_table(value);

DROP INDEX ddl_test_index;

-- show that sequences owned by mx tables result in unique values
SET citus.shard_replication_factor TO 1;
SET citus.shard_count TO 4;
SET citus.replication_model TO streaming;
CREATE TABLE mx_sequence(key INT, value BIGSERIAL);
SELECT create_distributed_table('mx_sequence', 'key');

\c - - - :worker_1_port

SELECT last_value AS worker_1_lastval FROM mx_sequence_value_seq \gset

\c - - - :worker_2_port

SELECT last_value AS worker_2_lastval FROM mx_sequence_value_seq \gset

\c - - - :master_port

-- don't look at the actual values because they rely on the groupids of the nodes
-- which can change depending on the tests which have run before this one
SELECT :worker_1_lastval = :worker_2_lastval;

-- the type of sequences can't be changed
ALTER TABLE mx_sequence ALTER value TYPE BIGINT;
ALTER TABLE mx_sequence ALTER value TYPE INT;