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Bug#16192219 CRASH IN TEST_IF_SKIP_SORT_ORDER ON SELECT DISTINCT WITH ORDER BY

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This is a backport of the fix for:

Bug#13633549 HANDLE_FATAL_SIGNAL IN TEST_IF_SKIP_SORT_ORDER/CREATE_SORT_INDEX
Don't invoke the range optimizer for a NULL select.
This commit is contained in:
Tor Didriksen
2013-02-07 17:05:07 +01:00
parent 7722bde50e
commit 370ac0669e
1 changed files with 2 additions and 1 deletions
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3
sql/sql_select.cc
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@ -13753,7 +13753,8 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
if (best_key >= 0)
{
if (table->quick_keys.is_set(best_key) && best_key != ref_key)
if (select &&
table->quick_keys.is_set(best_key) && best_key != ref_key)
{
key_map map;
map.clear_all(); // Force the creation of quick select