达梦数据库，第二章：报错不是 GROUP BY 表达式 - 润新知

达梦数据库，第二章：报错不是 GROUP BY 表达式
达梦数据库：在select中存在的字段，必须包含在group by 语句中
```
sql改造：

GROUP BY R.APP_CODE,R.APP_NAME

改成：

GROUP BY R.ID, R.ROLE_NAME,R.APP_CODE, R.APP_NAME
```
现在执行就没有出错了
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原文地址：https://www.cnblogs.com/javawxid/p/13731648.html

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