where后面可以跟group by
时间: 2023-09-03 22:05:32 浏览: 53
where后面可以跟group by。where字句用于对select语句的结果集进行筛选,而group by字句用于将结果集按照某个列进行分组。在使用group by之前,我们可以使用where来对结果集进行进一步的筛选,以减少分组的数据量。这样可以更精确地控制分组的范围,并提高查询效率。所以where和group by可以结合使用来实现更灵活的数据筛选和分组操作。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *2* [where和group by能一起使用吗?](https://blog.csdn.net/weixin_46093984/article/details/127073408)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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