database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-09-11 00:12:06 +03:00
Code Activity

Replace relids in lateral subquery parse tree during SJE

Browse Source 
Reported-by: Alexander Lakhin
Discussion: https://postgr.es/m/56ee4520-e9d1-d519-54fe-c8bff880ce9b%40gmail.com
Author: Alexander Korotkov, Andrei Lepikhov
This commit is contained in:
Alexander Korotkov
2024-02-20 14:10:10 +02:00
parent 74563f6b90
commit 489072ab7a
3 changed files with 84 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
src/backend/optimizer/plan/analyzejoins.c
View File

@@ -395,7 +395,34 @@ remove_rel_from_query(PlannerInfo *root, RelOptInfo *rel,
}
/* Update lateral references. */
replace_varno((Node *) otherrel->lateral_vars, relid, subst);
if (root->hasLateralRTEs)
{
RangeTblEntry *rte = root->simple_rte_array[rti];
ReplaceVarnoContext ctx = {.from = relid,.to = subst};
if (rte->lateral)
{
replace_varno((Node *) otherrel->lateral_vars, relid, subst);
/*
* Although we pass root->parse through cleanup procedure,
* but parse->rtable and rte contains refs to different copies
* of the subquery.
*/
if (otherrel->rtekind == RTE_SUBQUERY)
query_tree_walker(rte->subquery, replace_varno_walker, &ctx,
QTW_EXAMINE_SORTGROUP);
#ifdef USE_ASSERT_CHECKING
/* Just check possibly hidden non-replaced relids */
Assert(!bms_is_member(relid, pull_varnos(root, (Node *) rte->tablesample)));
Assert(!bms_is_member(relid, pull_varnos(root, (Node *) rte->functions)));
Assert(!bms_is_member(relid, pull_varnos(root, (Node *) rte->tablefunc)));
Assert(!bms_is_member(relid, pull_varnos(root, (Node *) rte->values_lists)));
#endif
}
}
}
/*