diff options
Diffstat (limited to 'src')
| -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 642f9510938..1a00200ac1b 100644 --- a/src/backend/optimizer/path/joinpath.c +++ b/src/backend/optimizer/path/joinpath.c @@ -1867,9 +1867,12 @@ hash_inner_and_outer(PlannerInfo *root, /* * Can we use a partial inner plan too, so that we can build a - * shared hash table in parallel? + * shared hash table in parallel? We can't handle + * JOIN_UNIQUE_INNER because we can't guarantee uniqueness. */ - if (innerrel->partial_pathlist != NIL && enable_parallel_hash) + if (innerrel->partial_pathlist != NIL && + save_jointype != JOIN_UNIQUE_INNER && + enable_parallel_hash) { cheapest_partial_inner = (Path *) linitial(innerrel->partial_pathlist); |