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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2025-07-18 10:52:05 +0300 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2025-07-18 10:52:05 +0300 |
| commit | 62c3b4cd9ddc6d3066e3f6e43b68fd00c620d9ad (patch) | |
| tree | a91002710828fa10122545bec52c473f777a2048 /contrib/postgres_fdw/sql | |
| parent | b597ae6cc128b17038d461c5aa426d42f9cc33f9 (diff) | |
| download | postgresql-62c3b4cd9ddc6d3066e3f6e43b68fd00c620d9ad.tar.gz postgresql-62c3b4cd9ddc6d3066e3f6e43b68fd00c620d9ad.zip | |
Support for deparsing of ArrayCoerceExpr node in contrib/postgres_fdw
When using a prepared statement to select data from a PostgreSQL foreign
table (postgres_fdw) with the "field = ANY($1)" expression, the operation
is not pushed down when an implicit type case is applied, and a generic plan
is used. This commit resolves the issue by supporting the push-down of
ArrayCoerceExpr, which is used in this case. The support is quite
straightforward and similar to other nods, such as RelabelType.
Discussion: https://postgr.es/m/4f0cea802476d23c6e799512ffd17aff%40postgrespro.ru
Author: Alexander Pyhalov <a.pyhalov@postgrespro.ru>
Reviewed-by: Maxim Orlov <orlovmg@gmail.com>
Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com>
Diffstat (limited to 'contrib/postgres_fdw/sql')
| -rw-r--r-- | contrib/postgres_fdw/sql/postgres_fdw.sql | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/sql/postgres_fdw.sql b/contrib/postgres_fdw/sql/postgres_fdw.sql index e534b40de3c..7267732f569 100644 --- a/contrib/postgres_fdw/sql/postgres_fdw.sql +++ b/contrib/postgres_fdw/sql/postgres_fdw.sql @@ -458,6 +458,15 @@ SELECT * FROM ft1 WHERE CASE c3 WHEN c6 THEN true ELSE c3 < 'bar' END; EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 WHERE CASE c3 COLLATE "C" WHEN c6 THEN true ELSE c3 < 'bar' END; +-- Test array type conversion pushdown +SET plan_cache_mode = force_generic_plan; +PREPARE s(varchar[]) AS SELECT count(*) FROM ft2 WHERE c6 = ANY ($1); +EXPLAIN (VERBOSE, COSTS OFF) +EXECUTE s(ARRAY['1','2']); +EXECUTE s(ARRAY['1','2']); +DEALLOCATE s; +RESET plan_cache_mode; + -- a regconfig constant referring to this text search configuration -- is initially unshippable CREATE TEXT SEARCH CONFIGURATION public.custom_search |