diff options
Diffstat (limited to 'src/backend/optimizer/plan/planagg.c')
| -rw-r--r-- | src/backend/optimizer/plan/planagg.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/backend/optimizer/plan/planagg.c b/src/backend/optimizer/plan/planagg.c index 55a5ed7b4c6..658a4abc315 100644 --- a/src/backend/optimizer/plan/planagg.c +++ b/src/backend/optimizer/plan/planagg.c @@ -257,7 +257,10 @@ optimize_minmax_aggregates(PlannerInfo *root, List *tlist, /* * We have to replace Aggrefs with Params in equivalence classes too, else - * ORDER BY or DISTINCT on an optimized aggregate will fail. + * ORDER BY or DISTINCT on an optimized aggregate will fail. We don't + * need to process child eclass members though, since they aren't of + * interest anymore --- and replace_aggs_with_params_mutator isn't able + * to handle Aggrefs containing translated child Vars, anyway. * * Note: at some point it might become necessary to mutate other data * structures too, such as the query's sortClause or distinctClause. Right @@ -265,7 +268,8 @@ optimize_minmax_aggregates(PlannerInfo *root, List *tlist, */ mutate_eclass_expressions(root, replace_aggs_with_params_mutator, - (void *) root); + (void *) root, + false); /* * Generate the output plan --- basically just a Result |