1.今天请假4.5小时参加复试
2.使用excle查看重复内容方法:
=IF(COUNTIF(A:A,A1635)>1,"重复","1")
3.excle条件筛选:
符合条件的内容高亮:点击条件格式
统计某一条件数值的个数:=COUNTIF(A2:A10,"条件")
条件的形式可以是数字、表达式或文本,甚至可以使用通配
4.mysql删除重复语句(除主键以外信息完全一样的信息)
https://www.cnblogs.com/oymj/p/6263759.html
create table tmp as select min(id) as col1 from blur_article group by title; delete from blur_article where id not in (select col1 from tmp); drop table tmp;
5.重装mysql
彻底删除:https://blog.csdn.net/weixin_42369926/article/details/81042133
https://blog.csdn.net/qq_22812319/article/details/51586261
1.卸载三部①删注册表
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet001/Services/Eventlog/Applications/MySQL
HKEY_LOCAL_MACHINE/SYSTEM/ControlSet002/Services/Eventlog/Applications/MySQL
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Eventlog/Applications/MySQL
②删安装文件如果之前安装路径是系统默认的话,文件在ProgramFiles,ProgramData,ProgramFiles(x86)
③去控制面板把mysql的空壳子也卸载掉
④在cmd中用sc delete 服务名称将mysql从服务中删除