diff options
| author | Tom Lane | 2003-10-18 16:52:15 +0000 |
|---|---|---|
| committer | Tom Lane | 2003-10-18 16:52:15 +0000 |
| commit | eda80f09ffd016a9fc12fc89f14019d760d998c8 (patch) | |
| tree | 7595e17173aec650b050c269427374574f32c9ae /src/test | |
| parent | c02036b1d84b3a7f57b2f5ad9133ada4970bef13 (diff) | |
Repair interaction between IN-join processing and subselect pullup that
I inadvertently broke a few days ago (per report from Sean Thomas).
Add regression test case to try to catch any similar breakage in future.
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/regress/expected/subselect.out | 36 | ||||
| -rw-r--r-- | src/test/regress/sql/subselect.sql | 18 |
2 files changed, 54 insertions, 0 deletions
diff --git a/src/test/regress/expected/subselect.out b/src/test/regress/expected/subselect.out index 5a2ef11c21b..f7b8297809f 100644 --- a/src/test/regress/expected/subselect.out +++ b/src/test/regress/expected/subselect.out @@ -165,3 +165,39 @@ from int8_tbl group by q1 order by q1; 4567890123456789 | 0.6 (2 rows) +-- +-- Test cases to catch unpleasant interactions between IN-join processing +-- and subquery pullup. +-- +select count(*) from + (select 1 from tenk1 a + where unique1 IN (select hundred from tenk1 b)) ss; + count +------- + 100 +(1 row) + +select count(distinct ss.ten) from + (select ten from tenk1 a + where unique1 IN (select hundred from tenk1 b)) ss; + count +------- + 10 +(1 row) + +select count(*) from + (select 1 from tenk1 a + where unique1 IN (select distinct hundred from tenk1 b)) ss; + count +------- + 100 +(1 row) + +select count(distinct ss.ten) from + (select ten from tenk1 a + where unique1 IN (select distinct hundred from tenk1 b)) ss; + count +------- + 10 +(1 row) + diff --git a/src/test/regress/sql/subselect.sql b/src/test/regress/sql/subselect.sql index c2cde6ac207..5ff9d1cf875 100644 --- a/src/test/regress/sql/subselect.sql +++ b/src/test/regress/sql/subselect.sql @@ -75,3 +75,21 @@ SELECT '' AS eight, ss.f1 AS "Correlated Field", ss.f3 AS "Second Field" select q1, float8(count(*)) / (select count(*) from int8_tbl) from int8_tbl group by q1 order by q1; + +-- +-- Test cases to catch unpleasant interactions between IN-join processing +-- and subquery pullup. +-- + +select count(*) from + (select 1 from tenk1 a + where unique1 IN (select hundred from tenk1 b)) ss; +select count(distinct ss.ten) from + (select ten from tenk1 a + where unique1 IN (select hundred from tenk1 b)) ss; +select count(*) from + (select 1 from tenk1 a + where unique1 IN (select distinct hundred from tenk1 b)) ss; +select count(distinct ss.ten) from + (select ten from tenk1 a + where unique1 IN (select distinct hundred from tenk1 b)) ss; |