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MySQL之旅(4) MySQL常用指令

1·服務啟動指令:

net start mysql

2·停止服務指令:

net stop mysql

3·登入指令:

mysqle -u root -p

4·退出指令:

exit

5·修改密碼指令:

ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘修改後的密碼’

6·重新整理許可權指令:

FLUSH PRIVILEGES

7·新增末列指令:

alter table TABLE_NAME add column NEW_COLUMN_NAME varchar(20) not null;

8·新增到某列後面指令:

alter table TABLE_NAME add column NEW_COLUMN_NAME varchar(20) not null after COLUMN_NAME;

9·新增到首列指令:

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·查詢讀取指令:

select * from TABLE_NAME;

12·顯示資料指令:

show full columns from TABLE_NAME;

13·應用資料庫指令:

use TABLE_NAME;

14·刪除資料指令:

drop database <資料庫名>;
DROP TABLE table_name ;

15·建立資料指令:

CREATE DATABASE 資料庫名;
CREATE TABLE table_name (column_name column_type);

16·資料去重指令及例項:傳送門

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