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| author | igor@rurik.mysql.com <> | 2003-11-26 17:23:52 -0800 |
|---|---|---|
| committer | igor@rurik.mysql.com <> | 2003-11-26 17:23:52 -0800 |
| commit | 3938ac543601aee49d3137621293302f2b577640 (patch) | |
| tree | ccfdefe3940ac9e8bf4d61df4e3eb671b6a303a4 /BitKeeper | |
| parent | 5b355ea6f51a3224650bbaea6d58e9015ac9000a (diff) | |
| download | mariadb-git-3938ac543601aee49d3137621293302f2b577640.tar.gz | |
This ChangeSet Introdices Item_equal.
The objects of this class represent multiple conjunctive equalities
in where conditions: =(f1,f2,...fn) <=> f1=f2 and f2= ... and =fn.
The objects are used to generate new possibale paths to access
the tables when executing a query.
They are also used to optimize the execution plan
chosen by the optimizer for the query.
Diffstat (limited to 'BitKeeper')
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