diff options
Diffstat (limited to 'src/backend/optimizer/util/pathnode.c')
| -rw-r--r-- | src/backend/optimizer/util/pathnode.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c index d465b9e2137..7aea30b306d 100644 --- a/src/backend/optimizer/util/pathnode.c +++ b/src/backend/optimizer/util/pathnode.c @@ -1230,15 +1230,14 @@ create_append_path(PlannerInfo *root, /* * When generating an Append path for a partitioned table, there may be - * parameters that are useful so we can eliminate certain partitions - * during execution. Here we'll go all the way and fully populate the - * parameter info data as we do for normal base relations. However, we - * need only bother doing this for RELOPT_BASEREL rels, as - * RELOPT_OTHER_MEMBER_REL's Append paths are merged into the base rel's - * Append subpaths. It would do no harm to do this, we just avoid it to - * save wasting effort. + * parameterized quals that are useful for run-time pruning. Hence, + * compute path.param_info the same way as for any other baserel, so that + * such quals will be available for make_partition_pruneinfo(). (This + * would not work right for a non-baserel, ie a scan on a non-leaf child + * partition, and it's not necessary anyway in that case. Must skip it if + * we don't have "root", too.) */ - if (partitioned_rels != NIL && root && rel->reloptkind == RELOPT_BASEREL) + if (root && rel->reloptkind == RELOPT_BASEREL && IS_PARTITIONED_REL(rel)) pathnode->path.param_info = get_baserel_parampathinfo(root, rel, required_outer); |