Regular relational indexes on the unitID columns of both tables as well as on the manager column in the unit table can help speed up the embedded SQL query.
两个表的unitID列上的常规关系索引以及unit 表的manager列上的常规关系索引有助于提高嵌入式SQL查询的速度。
Regular relational indexes on the unitID columns of both tables as well as on the manager column in the unit table can help speed up the embedded SQL query.
两个表的unitID列上的常规关系索引以及unit 表的manager列上的常规关系索引有助于提高嵌入式SQL查询的速度。
应用推荐