-- Hypothetical on partitioned tabled
CREATE TABLE hypo_part(id1 integer, id2 integer, id3 integer)
    PARTITION BY LIST (id1);
CREATE TABLE hypo_part_1
    PARTITION OF hypo_part FOR VALUES IN (1)
    PARTITION BY LIST (id2);
CREATE TABLE hypo_part_1_1
    PARTITION OF hypo_part_1 FOR VALUES IN (1);
INSERT INTO hypo_part SELECT 1, 1, generate_series(1, 10000);
ANALYZE hypo_part;
-- hypothetical index on root partitioned table should not work
SELECT hypopg_create_index('CREATE INDEX ON hypo_part (id1)');
ERROR:  hypopg: cannot create hypothetical index on partitioned table "hypo_part"
-- hypothetical index on non-root partitioned table should not work
SELECT hypopg_create_index('CREATE INDEX ON hypo_part_1 (id1)');
ERROR:  hypopg: cannot create hypothetical index on partitioned table "hypo_part_1"
-- hypothetical index on partition should work
SELECT COUNT(*) AS nb FROM  hypopg_create_index('CREATE INDEX ON hypo_part_1_1 (id3)');
 nb 
----
  1
(1 row)

-- Should use hypothetical index
SET enable_seqscan = 0;
SELECT COUNT(*) FROM do_explain('SELECT * FROM hypo_part WHERE id3 = 1') e
WHERE e ~ 'Index.*<\d+>btree_hypo_part_1_1.*';
 count 
-------
     1
(1 row)