diff options
Diffstat (limited to 'contrib/postgres_fdw/sql/postgres_fdw.sql')
| -rw-r--r-- | contrib/postgres_fdw/sql/postgres_fdw.sql | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/sql/postgres_fdw.sql b/contrib/postgres_fdw/sql/postgres_fdw.sql index d45e9f8ab52..ea6287b03fd 100644 --- a/contrib/postgres_fdw/sql/postgres_fdw.sql +++ b/contrib/postgres_fdw/sql/postgres_fdw.sql @@ -1455,6 +1455,23 @@ SELECT ft2.*, ft4.* FROM ft2 INNER JOIN WHERE ft2.c1 > 900 ORDER BY ft2.c1 LIMIT 10; +-- Semi-join conditions shouldn't pop up as left/right join clauses. +SET enable_material TO off; +EXPLAIN (verbose, costs off) +SELECT x1.c1 FROM + (SELECT * FROM ft2 WHERE EXISTS (SELECT 1 FROM ft4 WHERE ft4.c1 = ft2.c1 AND ft2.c2 < 10)) x1 + RIGHT JOIN + (SELECT * FROM ft2 WHERE EXISTS (SELECT 1 FROM ft4 WHERE ft4.c1 = ft2.c1 AND ft2.c2 < 10)) x2 + ON (x1.c1 = x2.c1) +ORDER BY x1.c1 LIMIT 10; +SELECT x1.c1 FROM + (SELECT * FROM ft2 WHERE EXISTS (SELECT 1 FROM ft4 WHERE ft4.c1 = ft2.c1 AND ft2.c2 < 10)) x1 + RIGHT JOIN + (SELECT * FROM ft2 WHERE EXISTS (SELECT 1 FROM ft4 WHERE ft4.c1 = ft2.c1 AND ft2.c2 < 10)) x2 + ON (x1.c1 = x2.c1) +ORDER BY x1.c1 LIMIT 10; +RESET enable_material; + -- Can't push down semi-join with inner rel vars in targetlist EXPLAIN (verbose, costs off) SELECT ft1.c1 FROM ft1 JOIN ft2 on ft1.c1 = ft2.c1 WHERE |