diff options
Diffstat (limited to 'src/backend/optimizer/plan/initsplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/initsplan.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c index 84ce6b31254..0e470ae96a8 100644 --- a/src/backend/optimizer/plan/initsplan.c +++ b/src/backend/optimizer/plan/initsplan.c @@ -1676,6 +1676,11 @@ distribute_qual_to_rels(PlannerInfo *root, Node *clause, * attach quals to the lowest level where they can be evaluated. But * if we were ever to re-introduce a mechanism for delaying evaluation * of "expensive" quals, this area would need work. + * + * Note: generally, use of is_pushed_down has to go through the macro + * RINFO_IS_PUSHED_DOWN, because that flag alone is not always sufficient + * to tell whether a clause must be treated as pushed-down in context. + * This seems like another reason why it should perhaps be rethought. *---------- */ if (is_deduced) |