mirror of
https://github.com/HypoPG/hypopg
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26 lines
964 B
SQL
26 lines
964 B
SQL
-- Hypothetical on partitioned tables
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CREATE TABLE hypo_part(id1 integer, id2 integer, id3 integer)
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PARTITION BY LIST (id1);
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CREATE TABLE hypo_part_1
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PARTITION OF hypo_part FOR VALUES IN (1)
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PARTITION BY LIST (id2);
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CREATE TABLE hypo_part_1_1
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PARTITION OF hypo_part_1 FOR VALUES IN (1);
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INSERT INTO hypo_part SELECT 1, 1, generate_series(1, 10000);
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ANALYZE hypo_part;
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-- hypothetical index on root partitioned table should not work
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SELECT hypopg_create_index('CREATE INDEX ON hypo_part (id1)');
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-- hypothetical index on non-root partitioned table should not work
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SELECT hypopg_create_index('CREATE INDEX ON hypo_part_1 (id1)');
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-- hypothetical index on partition should work
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SELECT COUNT(*) AS nb FROM hypopg_create_index('CREATE INDEX ON hypo_part_1_1 (id3)');
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-- Should use hypothetical index
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SET enable_seqscan = 0;
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SELECT COUNT(*) FROM do_explain('SELECT * FROM hypo_part WHERE id3 = 1') e
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WHERE e ~ 'Index.*<\d+>btree_hypo_part_1_1.*';
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