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| author | Sergey Petrunya <psergey@askmonty.org> | 2011-02-25 21:43:57 +0300 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2011-02-25 21:43:57 +0300 |
| commit | 0f265b825136ef5a51913ce7f18255c6c432eb96 (patch) | |
| tree | 76d8134be1abe16c2dd0041a185280c01cd3e99e /sql | |
| parent | 22e1ee5f5f5b1fb5a571a58c63ee805deb8ea43a (diff) | |
| download | mariadb-git-0f265b825136ef5a51913ce7f18255c6c432eb96.tar.gz | |
BUG#723822: Crash in get_constant_key_infix with EXISTS ( SELECT .. DISTINCT )
- Make get_constant_key_infix() take into account that there may be SEL_TREEs with
type=SEL_ARG::MAYBE_KEY, which it cannot process, because they are not real ranges
but rather indications that we might have been able to construct a range if we had
values for some other tables' fields.
(check_quick_select() already has such check)
Diffstat (limited to 'sql')
| -rw-r--r-- | sql/opt_range.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index 633fb3d571c..e6ff36f1307 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -11857,7 +11857,8 @@ get_constant_key_infix(KEY *index_info, SEL_ARG *index_range_tree, Find the range tree for the current keypart. We assume that index_range_tree points to the leftmost keypart in the index. */ - for (cur_range= index_range_tree; cur_range; + for (cur_range= index_range_tree; + cur_range && cur_range->type == SEL_ARG::KEY_RANGE; cur_range= cur_range->next_key_part) { if (cur_range->field->eq(cur_part->field)) |