Changeset: c11566afb242 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=c11566afb242
Modified Files:
sql/server/rel_optimizer.c
Branch: Jun2020
Log Message:
Remove possible empty select expressions after pushing expressions down
diffs (11 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
@@ -9295,6 +9295,7 @@ optimize_rel(mvc *sql, sql_rel *rel, int
rel = rel_visitor_topdown(sql, rel, &rel_push_count_down,
&changes);
if (level <= 0) {
rel = rel_visitor_topdown(sql, rel,
&rel_push_select_down, &changes);
+ rel = rel_visitor_bottomup(sql, rel,
&rel_remove_empty_select, &e_changes);
rel = rel_visitor_topdown(sql, rel,
&rel_push_join_down, &changes);
}
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