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| author | Sergey Petrunia <sergefp@mysql.com> | 2008-08-25 21:18:22 +0400 |
|---|---|---|
| committer | Sergey Petrunia <sergefp@mysql.com> | 2008-08-25 21:18:22 +0400 |
| commit | 6df6aeca4c43a8751c14a75a7880b173176d1d6a (patch) | |
| tree | c34fc11aced1c2647a3268d9ee1fca4142350026 /sql/opt_range.cc | |
| parent | d2541eac97aa9be4fc0b33a925e2f64c5bcafad6 (diff) | |
| parent | c770161ae80ba1d299dc8c7f14d214c379466fd5 (diff) | |
| download | mariadb-git-6df6aeca4c43a8751c14a75a7880b173176d1d6a.tar.gz | |
Merge BUG#36639 into 5.1
Diffstat (limited to 'sql/opt_range.cc')
| -rw-r--r-- | sql/opt_range.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sql/opt_range.cc b/sql/opt_range.cc index d0ca4ea7b23..28ee8af0699 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -8564,6 +8564,13 @@ QUICK_SELECT_DESC::QUICK_SELECT_DESC(QUICK_RANGE_SELECT *q, used_key_parts (used_key_parts_arg) { QUICK_RANGE *r; + /* + Use default MRR implementation for reverse scans. No table engine + currently can do an MRR scan with output in reverse index order. + */ + multi_range_length= 0; + multi_range= NULL; + multi_range_buff= NULL; QUICK_RANGE **pr= (QUICK_RANGE**)ranges.buffer; QUICK_RANGE **end_range= pr + ranges.elements; |