spark：expression 'xxx' is neither present in the group by

同一段SQL，在MYSQL中测试通过，挪到大数据执行报错：

org.apache.spark.sql.AnalysisException:
expression 'xxx' is neither present in the group by, nor is it an aggregate function.
Add to group by or wrap in first(or first_value)...

大数据查询遇到这个错误，解决方法已经提示。就是在xxx外面包裹first()函数。

至于原因：

https://www.jianshu.com/p/c131657a5813