She can execute directly from this query, or she can return to the tree view and run her tests from there.
她能够从这个查询中直接执行,也可以返回到属性图表中从那里运行她的测试。
Each time the query is made, the database must do the same work — parse the query, determine how to execute it, load information from disk, and return it to the client.
每次执行查询时,数据库都必须要执行相同的工作——对查询进行分析,确定如何执行查询,从磁盘中加载信息,然后将结果返回给客户机。
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