Changeset: 83b96198059d for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=83b96198059d
Modified Files:
sql/server/rel_optimizer.c
Branch: Oct2014
Log Message:
fixed crash in the combination of apply with a union.
diffs (29 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
@@ -6783,6 +6783,25 @@ rel_apply_rewrite(int *changes, mvc *sql
rel->exps = NULL;
return rel;
}
+ if (r->op == op_union) {
+ list *p;
+ sql_rel *nl;
+
+ assert( rel_uses_exps(r->l, rel->exps) && rel_uses_exps(r->r,
rel->exps));
+ /* apply returns all input columns + the output of the inner
relation */
+ /* so we prepend the input colunms to the unions expression
list */
+ /* Push the apply down the union */
+ p = rel_projections(sql, rel, NULL, 1, 1);
+ nl = rel_crossproduct(sql->sa, rel_dup(rel->l), r->l, op_apply);
+ rel->r = r->r;
+ nl->flag = rel->flag;
+ nl->exps = rel->exps;
+ r->l = nl;
+ r->r = rel;
+ r->exps = list_merge(p, r->exps, (fdup)NULL);
+ (*changes)++;
+ return r;
+ }
if (r->op == op_project) { /* merge projections */
if (!r->l) { /* TODO check realy apply case */
(*changes)++;
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