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

同一段SQL，在MYSQL中測試通過，挪到大數據執行報錯：

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)...

大數據查詢遇到這個錯誤，解決方法已經提示。就是在xxx外面包裹first()函數。

至於原因：

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