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Diffstat (limited to 'src/test/regress/sql/subselect.sql')
| -rw-r--r-- | src/test/regress/sql/subselect.sql | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/regress/sql/subselect.sql b/src/test/regress/sql/subselect.sql index 75a9b718b2f..af6e157aca0 100644 --- a/src/test/regress/sql/subselect.sql +++ b/src/test/regress/sql/subselect.sql @@ -891,6 +891,24 @@ fetch backward all in c1; commit; -- +-- Verify that we correctly flatten cases involving a subquery output +-- expression that doesn't need to be wrapped in a PlaceHolderVar +-- + +explain (costs off) +select tname, attname from ( +select relname::information_schema.sql_identifier as tname, * from + (select * from pg_class c) ss1) ss2 + right join pg_attribute a on a.attrelid = ss2.oid +where tname = 'tenk1' and attnum = 1; + +select tname, attname from ( +select relname::information_schema.sql_identifier as tname, * from + (select * from pg_class c) ss1) ss2 + right join pg_attribute a on a.attrelid = ss2.oid +where tname = 'tenk1' and attnum = 1; + +-- -- Tests for CTE inlining behavior -- |