Changeset: 1f817dc828df for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/1f817dc828df
Modified Files:
sql/backends/monet5/rel_bin.c
Branch: Jul2021
Log Message:
Give preference for the first one encountered (helps removing unecessary
bat.mirror calls)
diffs (35 lines):
diff --git a/sql/backends/monet5/rel_bin.c b/sql/backends/monet5/rel_bin.c
--- a/sql/backends/monet5/rel_bin.c
+++ b/sql/backends/monet5/rel_bin.c
@@ -308,18 +308,19 @@ statment_score(stmt *c)
static stmt *
bin_find_smallest_column(backend *be, stmt *sub)
{
- stmt *res = NULL;
- int best_score = 0;
-
- for (node *n = sub->op4.lval->h ; n ; n = n->next) {
- stmt *c = n->data;
- int next_score = statment_score(c);
-
- if (next_score >= best_score) {
- res = c;
- best_score = next_score;
- }
- }
+ stmt *res = sub->op4.lval->h->data;
+ int best_score = statment_score(sub->op4.lval->h->data);
+
+ if (sub->op4.lval->h->next)
+ for (node *n = sub->op4.lval->h->next ; n ; n = n->next) {
+ stmt *c = n->data;
+ int next_score = statment_score(c);
+
+ if (next_score > best_score) {
+ res = c;
+ best_score = next_score;
+ }
+ }
if (res->nrcols == 0)
return const_column(be, res);
return res;
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