Shulou(Shulou.com)06/01 Report--

Below I will give you a brief talk about what MySQL must know the basic commands, you know before the related similar topic content? If you are interested, take a look at this article together. I believe that after reading which MySQL basic commands will be helpful to everyone.

1.1 Log in to the database.

mysql -uroot -poldboy123 -S /data/3306/mysql.sock

1.2 View the database version and what the current logged-in user is.

select version();select user();

1.3 Create a database oldboy of GBK character sets and view the complete statements of the library.

create database oldboy character set gbk collate gbk_chinese_ci;show create database oldboy\G

1.4 Create user oldboy to manage database oldboy.

grant all on oldboy.* to 'oldboy'@'localhost' identified by 'oldboy123';

1.5 See what permissions the created user oldboy has.

show grants for oldboy@localhost\G

1.6 See which users are currently in the database.

select user,host from mysql.user;

1.7 Create admin account admin

grant all on *.* to 'admin'@'localhost' identified by 'admin123' with grant option;

1.8 Enter the oldboy database

use oldboy;

1.9 Create test table: innodb engine, character set GBK, field id int(4) and name varchar(16), view table structure and SQL statement.

create table test (id int(4),name varchar(16))ENGINE=innodb DEFAULT CHARSET=gbk;desc test; #1;

1.13 Change the name oldboy with data id equal to 1 to oldgirl.

update test set name='oldgirl' where id=1;

1.14 Insert an age field of type tinyint(2) before the field name.

alter table test add name tinyint(2) after id;

1.15 Backup oldboy and mysql libraries.

mysqldump -uroot -poldboy123 -S /data/3306/mysql.sock --events -B oldboy mysql >/opt/bak_$(date +%F).sql

egrep -v "#|^$|--|\/" /opt/bak_2017-06-06-13:36:37.sql

1.16 Delete all data from the table and view it.

truncate table test; #

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.