In particular, the ratio between rows read and selected can tell if all SQL statements are using indexes efficiently.
特别是,读取和选中的行之间的比率会告诉您是否所有sql语句都正在有效地使用索引。
So you may decide to go to a trusted, traditional media outlet to read the stories selected by its editors.
因此,你也许决定求助于某个可靠的、传统的传媒渠道,阅读由编辑们精选出来的新闻故事。
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