diff options
| -rw-r--r-- | src/backend/utils/adt/selfuncs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index 3e846799563..8ceea820bdc 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -4382,6 +4382,17 @@ examine_simple_variable(PlannerInfo *root, Var *var, /* Subquery should have been planned already */ Assert(rel->subroot && IsA(rel->subroot, PlannerInfo)); + /* + * Switch our attention to the subquery as mangled by the planner. + * It was okay to look at the pre-planning version for the tests + * above, but now we need a Var that will refer to the subroot's + * live RelOptInfos. For instance, if any subquery pullup happened + * during planning, Vars in the targetlist might have gotten replaced, + * and we need to see the replacement expressions. + */ + subquery = rel->subroot->parse; + Assert(IsA(subquery, Query)); + /* Get the subquery output expression referenced by the upper Var */ ste = get_tle_by_resno(subquery->targetList, var->varattno); if (ste == NULL || ste->resjunk) |