diff options
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index c225e61be96..ae51c0e0b0c 100644 --- a/src/backend/optimizer/plan/createplan.c +++ b/src/backend/optimizer/plan/createplan.c @@ -1038,7 +1038,7 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path) * * Note that an AppendPath with no members is also generated in certain * cases where there was no appending construct at all, but we know the - * relation is empty (see set_dummy_rel_pathlist). + * relation is empty (see set_dummy_rel_pathlist and mark_dummy_rel). */ if (best_path->subpaths == NIL) { @@ -6506,12 +6506,11 @@ is_projection_capable_path(Path *path) case T_Append: /* - * Append can't project, but if it's being used to represent a - * dummy path, claim that it can project. This prevents us from - * converting a rel from dummy to non-dummy status by applying a - * projection to its dummy path. + * Append can't project, but if an AppendPath is being used to + * represent a dummy path, what will actually be generated is a + * Result which can project. */ - return IS_DUMMY_PATH(path); + return IS_DUMMY_APPEND(path); case T_ProjectSet: /* |