Changeset: 12daba096f46 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/12daba096f46
Modified Files:
sql/server/rel_statistics.c
Branch: properties
Log Message:
Propagate number of uniques over joins (my mistake)
diffs (19 lines):
diff --git a/sql/server/rel_statistics.c b/sql/server/rel_statistics.c
--- a/sql/server/rel_statistics.c
+++ b/sql/server/rel_statistics.c
@@ -155,13 +155,8 @@ rel_propagate_column_ref_statistics(mvc
set_has_nil(e);
if (!is_outerjoin(rel->op) && found_without_semantics)
/* at an outer join, null values pass */
set_has_no_nil(e);
- if (is_join(rel->op)) {
- prop *est;
- if (is_unique(e) && !still_unique)
- set_not_unique(e);
- if ((est = find_prop(e->p, PROP_NUNIQUES))) /*
remove unique estimation after a join */
- e->p = prop_remove(e->p, est);
- }
+ if (is_join(rel->op) && is_unique(e) && !still_unique)
+ set_not_unique(e);
return e;
}
case op_table:
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