Changeset: 96ad3101c398 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/96ad3101c398
Modified Files:
sql/server/rel_unnest.c
Branch: Aug2024
Log Message:
fixing the push_up_munion, ie on anti join convert into inter (binary chained)
diffs (26 lines):
diff --git a/sql/server/rel_unnest.c b/sql/server/rel_unnest.c
--- a/sql/server/rel_unnest.c
+++ b/sql/server/rel_unnest.c
@@ -1647,10 +1647,19 @@ push_up_munion(mvc *sql, sql_rel *rel, l
sql_rel *sf = rlist->h->data;
ns->exps = rel_projections(sql, sf, NULL, 1, 1);
}
- if (rel->op == op_anti && s->op == op_munion) {
- assert(0); /* needs to convert list in
left/right again ! */
+ if (rel->op == op_anti && s->op == op_munion) {
+ /* chain the munion list of relations into a
pair-wise op_inter chain */
+ sql_rel *cl = rlist->h->data, *cr =
rlist->h->next->data;
ns->op = op_inter;
- }
+ if (list_length(rlist) > 2) {
+ for (node *n = rlist->h->next->next; n;
n = n->next) {
+ cr = rel_setop(sql->sa, cr,
n->data, op_inter);
+ cr->exps = exps_copy(sql,
ns->exps);
+ }
+ }
+ ns->l = cl;
+ ns->r = cr;
+ }
rel_destroy(rel);
return ns;
}
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