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Commit606ccc5

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Improve test case exercising the sorting path for hash index build.
On second thought, we should probably do at least a minimal check thatthe constructed index is valid, since the big problem with the mostrecent breakage was not whether the sorting was correct but that theindex had incorrect hash codes placed in it.
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‎src/test/regress/expected/create_index.out

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@@ -2351,6 +2351,23 @@ DROP TABLE unlogged_hash_table;
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SET maintenance_work_mem = '1MB';
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CREATE INDEX hash_tuplesort_idx ON tenk1 USING hash (stringu1 name_ops) WITH (fillfactor = 10);
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WARNING: hash indexes are not WAL-logged and their use is discouraged
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM tenk1 WHERE stringu1 = 'TVAAAA';
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QUERY PLAN
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-------------------------------------------------------
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Aggregate
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-> Bitmap Heap Scan on tenk1
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Recheck Cond: (stringu1 = 'TVAAAA'::name)
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-> Bitmap Index Scan on hash_tuplesort_idx
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Index Cond: (stringu1 = 'TVAAAA'::name)
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(5 rows)
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SELECT count(*) FROM tenk1 WHERE stringu1 = 'TVAAAA';
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count
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-------
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14
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(1 row)
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DROP INDEX hash_tuplesort_idx;
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RESET maintenance_work_mem;
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--

‎src/test/regress/sql/create_index.sql

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@@ -694,6 +694,9 @@ DROP TABLE unlogged_hash_table;
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-- maintenance_work_mem setting and fillfactor:
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SET maintenance_work_mem='1MB';
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CREATEINDEXhash_tuplesort_idxON tenk1 USING hash (stringu1 name_ops) WITH (fillfactor=10);
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EXPLAIN (COSTS OFF)
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SELECTcount(*)FROM tenk1WHERE stringu1='TVAAAA';
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SELECTcount(*)FROM tenk1WHERE stringu1='TVAAAA';
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DROPINDEX hash_tuplesort_idx;
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RESET maintenance_work_mem;
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