4.数据库
mysql -h127.0.0.1 -P3306 -uadmin -p123456
show databases;
use db1;
show tables;
desc user;
show create table table_name;
select * from user where id=54 \G;
git fetch --prune https://git-scm.com/docs/git-fetch
Before fetching, remove any remote-tracking references that no longer exist on the remote
同git remote prune
删除本地分支
git branch -d/D dev -D 强制删除