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    1. SQL 子句“GROUP BY 1"是什么意思?意思是?

      What does SQL clause quot;GROUP BY 1quot; mean?(SQL 子句“GROUP BY 1是什么意思?意思是?)
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              • 本文介绍了SQL 子句“GROUP BY 1"是什么意思?意思是?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                有人向我发送了一个 SQL 查询,其中 GROUP BY 子句包含以下语句:GROUP BY 1.

                Someone sent me a SQL query where the GROUP BY clause consisted of the statement: GROUP BY 1.

                这一定是打错字了吧?没有列被赋予别名 1.这意味着什么?我是否正确地认为这一定是一个错字?

                This must be a typo right? No column is given the alias 1. What could this mean? Am I right to assume that this must be a typo?

                推荐答案

                意思是按第一列分组,不管它叫什么.你可以用 ORDER BY 做同样的事情.

                It means to group by the first column regardless of what it's called. You can do the same with ORDER BY.

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