diff options
Diffstat (limited to 'src/backend/optimizer/path/allpaths.c')
| -rw-r--r-- | src/backend/optimizer/path/allpaths.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c index 7af001feaac..eea49cca7bb 100644 --- a/src/backend/optimizer/path/allpaths.c +++ b/src/backend/optimizer/path/allpaths.c @@ -1350,14 +1350,17 @@ add_paths_to_append_rel(PlannerInfo *root, RelOptInfo *rel, /* * When the planner is considering cheap startup plans, we'll also - * collect all the cheapest_startup_paths and build an AppendPath - * containing those as subpaths. + * collect all the cheapest_startup_paths (if set) and build an + * AppendPath containing those as subpaths. */ - if (rel->consider_startup && childrel->pathlist != NIL && - childrel->cheapest_startup_path->param_info == NULL) + if (rel->consider_startup && childrel->cheapest_startup_path != NULL) + { + /* cheapest_startup_path must not be a parameterized path. */ + Assert(childrel->cheapest_startup_path->param_info == NULL); accumulate_append_subpath(childrel->cheapest_startup_path, &startup_subpaths, NULL); + } else startup_subpaths_valid = false; |