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SQL语句实现表中字段的组合累加排序 - 站长搜索
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SQL语句实现表中字段的组合累加排序

数据库操作教程 2022-09-23 18:03:04 转载来源: 网络整理/侵权必删

有表如下:idinoutindex1101222982312831993112032518222002这三个字段均为integer类型现要求如下:1、按index=2查找2、将所有id相同的和在一起,数据要加在一起3、最后呈现的数据要按in+out进行排序,按由大到小为满足以上的要求:设计的SQL语句如下(假设表名为tab)复制代码代码如下:selectid,sum(in)asin,sum(out)asoutfromtabwhereindex=2groupbyidorderbyin+outdesc;以上就是SQL语句实现表中字段的组合累加排序的全部内容,希望能给大家一个参考,也希望大家多多支持脚本之家。

有表如下:

id in out index
1 10 12 2
2 9 8 2
3 12 8 3
1 9 9 3
1 12 0 3
2 5 18 2
2 20 0 2

这三个字段均为integer类型

现要求如下:

1、按index=2查找
2、将所有id相同的和在一起,数据要加在一起
3、最后呈现的数据要按in+out进行排序,按由大到小

为满足以上的要求:设计的SQL语句如下(假设表名为tab)

复制代码 代码如下:
select id,sum(in) as in,sum(out) as out from tab where index=2 group by id order by in + out desc;

以上就是SQL语句实现表中字段的组合累加排序的全部内容,希望能给大家一个参考,也希望大家多多支持脚本之家。

标签: SQL 语句 实现 表中 字段 组合 累加 排序


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