diff options
| author | Alexander Korotkov | 2025-07-18 07:52:05 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2025-07-18 07:52:05 +0000 |
| commit | 62c3b4cd9ddc6d3066e3f6e43b68fd00c620d9ad (patch) | |
| tree | a91002710828fa10122545bec52c473f777a2048 /contrib/postgres_fdw/expected | |
| parent | b597ae6cc128b17038d461c5aa426d42f9cc33f9 (diff) | |
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 <[email protected]>
Reviewed-by: Maxim Orlov <[email protected]>
Reviewed-by: Alexander Korotkov <[email protected]>
Diffstat (limited to 'contrib/postgres_fdw/expected')
| -rw-r--r-- | contrib/postgres_fdw/expected/postgres_fdw.out | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/contrib/postgres_fdw/expected/postgres_fdw.out b/contrib/postgres_fdw/expected/postgres_fdw.out index 2185b42bb4f..ff2b30cc912 100644 --- a/contrib/postgres_fdw/expected/postgres_fdw.out +++ b/contrib/postgres_fdw/expected/postgres_fdw.out @@ -1180,6 +1180,27 @@ SELECT * FROM ft1 WHERE CASE c3 COLLATE "C" WHEN c6 THEN true ELSE c3 < 'bar' EN Remote SQL: SELECT "C 1", c2, c3, c4, c5, c6, c7, c8 FROM "S 1"."T 1" (4 rows) +-- 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']); + QUERY PLAN +--------------------------------------------------------------------------------------------- + Foreign Scan + Output: (count(*)) + Relations: Aggregate on (public.ft2) + Remote SQL: SELECT count(*) FROM "S 1"."T 1" WHERE ((c6 = ANY ($1::character varying[]))) +(4 rows) + +EXECUTE s(ARRAY['1','2']); + count +------- + 200 +(1 row) + +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 |