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Bug#16208709 - CRASH IN GET_SEL_ARG_FOR_KEYPART ON SELECT DISTINCT

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ON COL WITH COMPOSITE INDEX

This problem is caused by the patch for the bug#11751794.
While checking for the keypart covering non grouping attribute. we are not 
checking whether the root node of the SEL_ARG* tree for the index have any 
cvalue or not.
This commit is contained in:
Neeraj Bisht
2013-01-29 10:06:31 +05:30
parent aa35791781 516a0ad464
commit 5e6f6400d6
1 changed files with 2 additions and 0 deletions
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2
sql/opt_range.cc
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@ -10085,6 +10085,8 @@ get_sel_arg_for_keypart(Field *nga_field,
SEL_ARG *keypart_tree, SEL_ARG *keypart_tree,
SEL_ARG **cur_range) SEL_ARG **cur_range)
{ {
if(keypart_tree == NULL)
return false;
if(keypart_tree->field->eq(nga_field)) if(keypart_tree->field->eq(nga_field))
{ {
/* /*