Changeset: dc9f8cad1957 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/dc9f8cad1957
Modified Files:
sql/server/rel_multiset.c
Branch: nested
Log Message:
initial handling of left with unnest
diffs (25 lines):
diff --git a/sql/server/rel_multiset.c b/sql/server/rel_multiset.c
--- a/sql/server/rel_multiset.c
+++ b/sql/server/rel_multiset.c
@@ -64,7 +64,12 @@ ms_add_join_exps(visitor *v, sql_rel *re
static sql_rel *
fm_join(visitor *v, sql_rel *rel)
{
- if (list_empty(rel->exps) && is_dependent(rel)) {
+ if (is_dependent(rel) && list_length(rel->exps) <= 1) {
+ if (list_length(rel->exps) == 1) {
+ sql_exp *e = rel->exps->h->data;
+ if (!exp_is_true(e))
+ return rel;
+ }
list *exps = rel_projections(v->sql, rel->l, NULL, 0, 1);
bool needed = has_multiset(exps);
@@ -80,6 +85,7 @@ flatten_multiset(visitor *v, sql_rel *re
(void)v;
switch(rel->op) {
case op_join:
+ case op_left:
return fm_join(v, rel);
default:
return rel;
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