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Diffstat (limited to 'src/backend/optimizer/path/joinpath.c')
| -rw-r--r-- | src/backend/optimizer/path/joinpath.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c index 3fd5a24fadc..e9def9d540a 100644 --- a/src/backend/optimizer/path/joinpath.c +++ b/src/backend/optimizer/path/joinpath.c @@ -730,8 +730,11 @@ try_nestloop_path(PlannerInfo *root, return; /* - * Paths are parameterized by top-level parents, so run parameterization - * tests on the parent relids. + * Any parameterization of the input paths refers to topmost parents of + * the relevant relations, because reparameterize_path_by_child() hasn't + * been called yet. So we must consider topmost parents of the relations + * being joined, too, while determining parameterization of the result and + * checking for disallowed parameterization cases. */ if (innerrel->top_parent_relids) innerrelids = innerrel->top_parent_relids; |