diff options
| -rw-r--r-- | sql/sql_select.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 350d43ff24d..76d51bda6ef 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -7968,6 +7968,13 @@ best_access_path(JOIN *join, if (filter) { tmp-= filter->get_adjusted_gain(rows) - filter->get_cmp_gain(rows); + double filter_gain= + filter->get_adjusted_gain(rows) - filter->get_cmp_gain(rows); + if (filter_gain < 0) + { + fprintf(stderr, "filter_gain:%g, query=%s\n", filter_gain, + thd->query()); + } DBUG_ASSERT(tmp >= 0); trace_access_idx.add("rowid_filter_key", s->table->key_info[filter->key_no].name); |