MYSQL/MARIADB Query Execution path

MySQL usually can only cache read requests, that is, select, but the generalized query statements are included in the deletion and change, because each delete must first find out, each time the increase also must first check (primary key there is no conflict, the unique key has no conflict), but generally add and remove the operation is not cached. 650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M01/8A/C0/wKiom1g6spGyGTaOAALQXrrgTt4242.jpg "title=" MySQL query execution path. jpg "alt=" wkiom1g6spgygtaoaalqxrrgtt4242.jpg "/>

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MYSQL/MARIADB Query Execution path