luciano/pg_ivm
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add restriction of SubLink in pg_ivm

Browse source 
sublink in targetlist is not supported, so add this restrict
and testcase.
This commit is contained in:
thoshiai 2023-08-08 17:32:16 +09:00
parent 60e6a358b5
commit d5bfa72a4a
3 changed files with 10 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
createas.c
View file

@ -968,6 +968,12 @@ check_ivm_restriction_walker(Node *node, check_ivm_restriction_context *context)
case T_TargetEntry:
{
TargetEntry *tle = (TargetEntry *)node;
if (IsA(tle->expr, SubLink))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("this query is not allowed on incrementally maintainable materialized view"),
errhint("sublink only supports subquery with EXISTS clause in WHERE clause")));
if (isIvmName(tle->resname))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),

3
expected/pg_ivm.out
View file

@ -845,6 +845,9 @@ ERROR: this query is not allowed on incrementally maintainable materialized vie
HINT: OR or NOT conditions and EXISTS condition are not used together
SELECT create_immv('mv_ivm_subquery', 'SELECT a.j FROM mv_base_a a WHERE EXISTS(SELECT 1 FROM mv_base_a a2 WHERE EXISTS(SELECT 1 FROM mv_base_b b WHERE a2.i = b.i))');
ERROR: nested sublink is not supported on incrementally maintainable materialized view
SELECT create_immv('mv_ivm_subquery', 'SELECT EXISTS(SELECT 1 from mv_base_b) FROM mv_base_a a');
ERROR: this query is not allowed on incrementally maintainable materialized view
HINT: sublink only supports subquery with EXISTS clause in WHERE clause
-- support join subquery in FROM clause
BEGIN;
SELECT create_immv('mv_ivm_join_subquery', 'SELECT i, j, k FROM ( SELECT i, a.j, b.k FROM mv_base_b b INNER JOIN mv_base_a a USING(i)) tmp');

1
sql/pg_ivm.sql
View file

@ -271,6 +271,7 @@ SELECT create_immv('mv_ivm_subquery', 'SELECT * FROM generate_series(1, (SELECT
SELECT create_immv('mv_ivm_subquery', 'SELECT a.j FROM mv_base_a a WHERE EXISTS(SELECT 1 FROM mv_base_b b WHERE a.i = b.i)');
SELECT create_immv('mv_ivm_subquery', 'SELECT a.i,a.j FROM mv_base_a a WHERE EXISTS(SELECT 1 FROM mv_base_b b WHERE a.i = b.i) OR a.i > 2');
SELECT create_immv('mv_ivm_subquery', 'SELECT a.j FROM mv_base_a a WHERE EXISTS(SELECT 1 FROM mv_base_a a2 WHERE EXISTS(SELECT 1 FROM mv_base_b b WHERE a2.i = b.i))');
SELECT create_immv('mv_ivm_subquery', 'SELECT EXISTS(SELECT 1 from mv_base_b) FROM mv_base_a a');
-- support join subquery in FROM clause
BEGIN;