Changeset: 562bf24c824e for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/562bf24c824e
Modified Files:
sql/server/rel_statistics.c
Branch: Sep2022
Log Message:
A few small improvements.
diffs (21 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
@@ -877,14 +877,15 @@ rel_get_statistics_(visitor *v, sql_rel
/* simple expressions first */
if (e->type == e_cmp && e->flag
== cmp_equal && exp_is_atom(er)) {
/* use selectivity */
- prop *p = NULL;
+ prop *p;
if ((p =
find_prop(el->p, PROP_NUNIQUES))) {
u = (BUN)
p->value.dval;
+ break;
}
}
}
/* u is an *estimate*, so don't set
count_prop to 0 unless cnt is 0 */
- set_count_prop(v->sql->sa, rel, cnt ==
0 ? 0 : u > cnt ? 1 : cnt/u);
+ set_count_prop(v->sql->sa, rel, cnt ==
0 ? 0 : u == 0 || u > cnt ? 1 : cnt/u);
} else {
set_count_prop(v->sql->sa, rel,
get_rel_count(l));
}
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