diff options
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 9 | ||||
| -rw-r--r-- | src/test/regress/expected/subselect.out | 12 | ||||
| -rw-r--r-- | src/test/regress/sql/subselect.sql | 11 |
3 files changed, 31 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 8187ab37d5b..94c8b6cba6a 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.168.2.3 2008/11/11 18:13:43 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/path/allpaths.c,v 1.168.2.4 2009/03/10 20:58:41 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -478,6 +478,13 @@ set_subquery_pathlist(PlannerInfo *root, RelOptInfo *rel, PlannerInfo *subroot; List *pathkeys; + /* + * Must copy the Query so that planning doesn't mess up the RTE contents + * (really really need to fix the planner to not scribble on its input, + * someday). + */ + subquery = copyObject(subquery); + /* We need a workspace for keeping track of set-op type coercions */ differentTypes = (bool *) palloc0((list_length(subquery->targetList) + 1) * sizeof(bool)); diff --git a/src/test/regress/expected/subselect.out b/src/test/regress/expected/subselect.out index 6a4f36dc2b5..0774f228d15 100644 --- a/src/test/regress/expected/subselect.out +++ b/src/test/regress/expected/subselect.out @@ -466,3 +466,15 @@ from tc; 3 (2 rows) +-- +-- Test case for 8.3 "failed to locate grouping columns" bug +-- +create temp table t1 (f1 numeric(14,0), f2 varchar(30)); +select * from + (select distinct f1, f2, (select f2 from t1 x where x.f1 = up.f1) as fs + from t1 up) ss +group by f1,f2,fs; + f1 | f2 | fs +----+----+---- +(0 rows) + diff --git a/src/test/regress/sql/subselect.sql b/src/test/regress/sql/subselect.sql index 3a3f11793dc..fd8d5df3a01 100644 --- a/src/test/regress/sql/subselect.sql +++ b/src/test/regress/sql/subselect.sql @@ -298,3 +298,14 @@ select ( select min(tb.id) from tb where tb.aval = (select ta.val from ta where ta.id = tc.aid) ) as min_tb_id from tc; + +-- +-- Test case for 8.3 "failed to locate grouping columns" bug +-- + +create temp table t1 (f1 numeric(14,0), f2 varchar(30)); + +select * from + (select distinct f1, f2, (select f2 from t1 x where x.f1 = up.f1) as fs + from t1 up) ss +group by f1,f2,fs; |