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authorVarun Gupta <varunraiko1803@gmail.com>2018-10-14 10:44:00 -0700
committerVarun Gupta <varunraiko1803@gmail.com>2018-10-14 10:44:00 -0700
commitaf6077b5358198384eb873ce26f88e7a7ecfe106 (patch)
treec5059dd7292ec4f601fd4de5487083e52d5c028a /sql/sql_select.cc
parentb715a0fe451425a2cc1c0be587a68c1512b4725a (diff)
downloadmariadb-git-af6077b5358198384eb873ce26f88e7a7ecfe106.tar.gz
MDEV-16990:server crashes in base_list_iterator::next
When we have a query which has implicit_grouping then we are sure that we would end up with only one row so there is no point to do DISTINCT computation
Diffstat (limited to 'sql/sql_select.cc')
-rw-r--r--sql/sql_select.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 6f98bab32d3..a9adbd168a6 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -2731,7 +2731,7 @@ bool JOIN::make_aggr_tables_info()
remove_duplicates() assumes there is a preceding computation step (and
in the degenerate join, there's none)
*/
- if (top_join_tab_count)
+ if (top_join_tab_count && tables_list)
curr_tab->distinct= true;
having= NULL;