Changeset: a5afe23a8505 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=a5afe23a8505
Modified Files:
sql/server/rel_optimizer.c
Branch: default
Log Message:
Call optimizer only when outer joins are available
diffs (13 lines):
diff --git a/sql/server/rel_optimizer.c b/sql/server/rel_optimizer.c
--- a/sql/server/rel_optimizer.c
+++ b/sql/server/rel_optimizer.c
@@ -9694,7 +9694,8 @@ optimize_rel(mvc *sql, sql_rel *rel, int
rel = rel_visitor_topdown(&v, rel, &rel_out2inner);
if (gp.cnt[op_join])
rel = rel_visitor_bottomup(&v, rel, &rel_join2semijoin);
- rel = rel_visitor_bottomup(&v, rel, &rel_push_join_down_outer);
+ if ((gp.cnt[op_left] || gp.cnt[op_right] || gp.cnt[op_full]) &&
gp.cnt[op_join])
+ rel = rel_visitor_bottomup(&v, rel,
&rel_push_join_down_outer);
if (!gp.cnt[op_update])
rel = rel_join_order(&v, rel);
if (gp.cnt[op_union])
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