Wesley13 Wesley13
3年前
Mysql 查询表中某字段的重复值,删除重复值保留id最小的数据
1查询重复值SELECTFROMHb_StudentsWHEREstudentIdIN(SELECTstudentIdFROMHb_StudentsGROUPBYstudentIdHAVINGcount(studentId)1);2删除重复值创建临时表CREATETEM
Wesley13 Wesley13
3年前
Ubuntu tar方式安装mysql5.7.21 时报错 [ERROR] Can't locate the language directory. 以及
参考帖子:http://blog.csdn.net/ty0415/article/details/22958133(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fblog.csdn.net%2Fty0415%2Farticle%2Fdetails%2F22958133)首先,在