group by with rollup
时间: 2023-10-19 13:35:40 浏览: 122
Group by with rollup是一种在数据库中使用的查询语句,用于将查询结果按照指定的字段进行分组,并在结果中添加一个合计行。通过使用with rollup关键字,可以在结果中添加一个额外的行,该行代表所有分组的总计。这样可以更方便地进行数据汇总和分析。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* *2* *3* [SQL的分组查询——group by、with rollup、having、聚合函数、group_concat等](https://blog.csdn.net/qq_35456045/article/details/105169559)[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: 100%"]
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相关问题
GROUP BY WITH ROLLUP
GROUP BY WITH ROLLUP是一种SQL语句,用于在聚合函数的结果中添加小计和总计行。在使用GROUP BY子句对数据进行分组后,使用WITH ROLLUP可以在结果集中添加一行小计和一行总计。小计行显示每个分组的汇总值,总计行显示所有分组的汇总值。例如,以下SQL语句将按Category列对Products表进行分组,并在结果集中添加小计和总计行:
SELECT Category, SUM(Quantity) FROM Products GROUP BY Category WITH ROLLUP;
oracle中group by with rollup
在Oracle中,使用group by语句可以对数据进行分组统计。而通过结合rollup关键字,可以在分组统计的基础上再次进行汇总统计,即在每个分组下都会有统计汇总。 举个例子,如果我们使用"group by rollup(id)",那么将会对id进行分组统计,并在每个分组下还会进行一次总计。这样可以得到更详细的统计结果。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Oracle Group By 用法之 —— Rollup](https://blog.csdn.net/weixin_39649478/article/details/116469600)[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%"]
- *2* *3* [oracle 中 group by rollup(id)与mysql 的 group by with rollup id](https://blog.csdn.net/kang1011/article/details/106437125)[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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