diff options
Diffstat (limited to 'src/backend/optimizer/geqo/geqo_eval.c')
| -rw-r--r-- | src/backend/optimizer/geqo/geqo_eval.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/backend/optimizer/geqo/geqo_eval.c b/src/backend/optimizer/geqo/geqo_eval.c index 1e352fd3b5e..57eb2c39a4f 100644 --- a/src/backend/optimizer/geqo/geqo_eval.c +++ b/src/backend/optimizer/geqo/geqo_eval.c @@ -56,6 +56,7 @@ geqo_eval(PlannerInfo *root, Gene *tour, int num_gene) MemoryContext mycontext; MemoryContext oldcxt; RelOptInfo *joinrel; + Path *best_path; Cost fitness; int savelength; struct HTAB *savehash; @@ -99,6 +100,14 @@ geqo_eval(PlannerInfo *root, Gene *tour, int num_gene) /* construct the best path for the given combination of relations */ joinrel = gimme_tree(root, tour, num_gene); + best_path = joinrel->cheapest_total_path; + + /* + * If no unparameterized path, use the cheapest parameterized path for + * costing purposes. XXX revisit this after LATERAL dust settles + */ + if (!best_path) + best_path = linitial(joinrel->cheapest_parameterized_paths); /* * compute fitness @@ -106,7 +115,7 @@ geqo_eval(PlannerInfo *root, Gene *tour, int num_gene) * XXX geqo does not currently support optimization for partial result * retrieval --- how to fix? */ - fitness = joinrel->cheapest_total_path->total_cost; + fitness = best_path->total_cost; /* * Restore join_rel_list to its former state, and put back original |