MySQL之旅(4) MySQL常用指令
1·服务启动指令:
net start mysql
2·停止服务指令:
net stop mysql
3·登录指令:
mysqle -u root -p
4·退出指令:
exit
5·修改密码指令:
ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘修改后的密码’
6·刷新权限指令:
FLUSH PRIVILEGES
7·添加末列指令:
alter table TABLE_NAME add column NEW_COLUMN_NAME varchar(20) not null;
8·添加到某列后面指令:
alter table TABLE_NAME add column NEW_COLUMN_NAME varchar(20) not null after COLUMN_NAME;
9·添加到首列指令:
alter table TABLE_NAME add column NEW_COLUMN_NAME varchar(20) not null first;
10·插入一行及多行指令:
INSERT INTO table_name ( field1, field2,...fieldN ) VALUES ( value1, value2,...valueN );
INSERT INTO table_name ( field1, field2,...fieldN ) VALUES ( value1, value2,...valueN ), ( value1, value2,...valueN ), ( value1, value2,...valueN ), ( value1, value2,...valueN );
11·查询读取指令:
select * from TABLE_NAME;
12·显示数据指令:
show full columns from TABLE_NAME;
13·应用数据库指令:
use TABLE_NAME;
14·删除数据指令:
drop database <数据库名>;
DROP TABLE table_name ;
15·创建数据指令:
CREATE DATABASE 数据库名;
CREATE TABLE table_name (column_name column_type);
16·数据去重指令及实例:传送门
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end!
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