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优化之Source Qualifier组件

勾选Select Distinct选项,该选项可去除重复记录,以此达到减少数据量从而提高性能

 

 

 

 

 

 

 

 

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posted @ 2019-04-12 13:34  立业的博客  阅读(304)  评论(0编辑  收藏  举报