mysql5.7.x:this is incompatible with DISTINCT

DISTINCT关键字经常在MySQL中使用，在mysql5.7以前的版本中一般没有什么问题，但是在5.7以后的版本中会遇到这样的错误

Caused by: java.sql.SQLException: Expression #1 of ORDER BY clause is not in SELECT list, references column ‘game.giftbag0_.create_date’ which is not in SELECT list; this is incompatible with DISTINCT

错误提示DISTINCT不兼容，要么更改SQL，但是对于开发者来讲，sql运行一直都是正常的，可能是mysql 版本升级导致的安全问题，5.7.x安全性提升了很多，解决办法可以考虑修改MySQL配置文件,找到对应的my.cnf或者my.ini

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

添加该行就ok!

还有一种错也是不兼容的问题导致的

Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column ‘nctest.pivot.id’ which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

这种问题就是sql_mode=only_full_group_by导致的，去掉only_full_group_by就解决了