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| author | Sergey Petrunya <psergey@askmonty.org> | 2011-04-02 14:04:45 +0400 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2011-04-02 14:04:45 +0400 |
| commit | 997445bc8eb578355b41abc3f4e42f579f900043 (patch) | |
| tree | 1224e5382ffa0b158db9d4d109114ba28b6c361d /.bzr-mysql | |
| parent | 886d84d6d15f17d91a37453875b386167a9fef76 (diff) | |
| download | mariadb-git-997445bc8eb578355b41abc3f4e42f579f900043.tar.gz | |
Make EXPLAIN better at displaying MRR/BKA:
- "Using MRR" is no longer shown with range access.
- Instead, both range and BKA accesses will show one of the following:
= "Rowid-ordered scan"
= "Key-ordered scan"
= "Key-ordered Rowid-ordered scan"
depending on whether DS-MRR implementation will do scan keys in order, rowids in order,
or both.
- The patch also introduces a way for other storage engines/MRR implementations to
pass information to EXPLAIN output about the properties of employed MRR scans.
Diffstat (limited to '.bzr-mysql')
0 files changed, 0 insertions, 0 deletions