指定字段求和,该如何解决
指定字段求和
想求出韩姓用户，已经上传文件大小。
怎么写啊？谢谢啊
------解决方案--------------------
select SUM(daxiao) as size where username like '韩%';
------解决方案--------------------
as size
给他起个外号叫size.
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