MySQL執行計劃初探

-Mysql執行計劃總結–html 1 執行計劃概述 先看看一個執行計劃 mysql> explain SELECT * FROM EMP , DAO_OBJECTS t1 , DAO_OBJECTS t2 WHERE deptno= t1.object_id AND t1.object_name=t2.object_name ; +----+-------------+-------+----

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