diff options
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index 610f4a56d6b..5f479fc56c1 100644 --- a/src/backend/optimizer/plan/createplan.c +++ b/src/backend/optimizer/plan/createplan.c @@ -29,6 +29,7 @@ #include "optimizer/cost.h" #include "optimizer/optimizer.h" #include "optimizer/paramassign.h" +#include "optimizer/pathnode.h" #include "optimizer/paths.h" #include "optimizer/placeholder.h" #include "optimizer/plancat.h" @@ -4355,6 +4356,22 @@ create_nestloop_plan(PlannerInfo *root, List *nestParams; Relids saveOuterRels = root->curOuterRels; + /* + * If the inner path is parameterized by the topmost parent of the outer + * rel rather than the outer rel itself, fix that. (Nothing happens here + * if it is not so parameterized.) + */ + best_path->jpath.innerjoinpath = + reparameterize_path_by_child(root, + best_path->jpath.innerjoinpath, + best_path->jpath.outerjoinpath->parent); + + /* + * Failure here probably means that reparameterize_path_by_child() is not + * in sync with path_is_reparameterizable_by_child(). + */ + Assert(best_path->jpath.innerjoinpath != NULL); + /* NestLoop can project, so no need to be picky about child tlists */ outer_plan = create_plan_recurse(root, best_path->jpath.outerjoinpath, 0); |