Changeset: e9524d62aece for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=e9524d62aece
Modified Files:
sql/server/rel_optimizer.c
Branch: Jun2020
Log Message:
small fix for rel_split_project, don't refer to a earlier expression if it
hides a deeper expression.
diffs (22 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
@@ -7785,7 +7785,17 @@ add_exp_too_project(mvc *sql, sql_exp *e
exp_label(sql->sa, e, ++sql->label);
append(rel->exps, e);
} else {
- e = n->data;
+ sql_exp *ne = n->data;
+
+ if (rel && rel->l) {
+ if ((exp_relname(ne) && exp_name(ne) &&
rel_bind_column2(sql, rel->l, exp_relname(ne), exp_name(ne), 0)) ||
+ (!exp_relname(ne) && exp_name(ne) &&
rel_bind_column(sql, rel->l, exp_name(ne), 0, 1))) {
+ exp_label(sql->sa, e, ++sql->label);
+ append(rel->exps, e);
+ ne = e;
+ }
+ }
+ e = ne;
}
e = exp_ref(sql, e);
return e;
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