centos 下安装MariaDB 及其基本操作指令

<1>安装 MariaDB

[root@iZ236xzsl93Z ~]# sudo yum install MariaDB-server MariaDB-client
[root@iZ236xzsl93Z ~]# service mysql start
Starting MySQL. SUCCESS!

<2>MySQL操作

【restart】开启mysql：

# service mysql start
Starting MySQL SUCCESS!

【stop】关闭mysql

# service mysql stop

【restart】重新开启mysql

# service mysql restart

[root@iZ236xzsl93Z ~]# mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

#这个留在下一个博客中解决

运行mysql，root用户 不要登陆 默认没有密码

[root@iZ236xzsl93Z init.d]# mysql

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 3
Server version: 10.0.20-MariaDB MariaDB Server
Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

从mysql.user里面列出用户列表 密码

MariaDB [(none)]> SELECT user,host,password FROM mysql.user;

user	host	password
root	localhost
root	iz236xzsl93z
root	127.0.0.1
root	::1
	localhost
	iz236xzsl93z

MariaDB [(none)]> show grants;

Grants for root@localhost
GRANT ALL PRIVILEGES ON . TO ‘root’@’localhost’ WITH GRANT OPTION
GRANT PROXY ON ”@’%’ TO ‘root’@’localhost’ WITH GRANT OPTION

MariaDB [(none)]> CREATE DATABASE IF NOT EXISTS test;
Query OK, 1 row affected, 1 warning (0.00 sec)

【USE】进入test数据库

MariaDB [(none)]> USE test
Database changed
MariaDB [test]>

【CREATE TABLE】在test数据库中创建一个books表格

MariaDB [test]> CRERAT TABLE IF NOT EXISTS books(
-> BookID INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
-> Title VARCHAR(100) NOT NULL,
-> SeriesID INT,
-> AuthorID INT );

【show】显示表格

MariaDB [test]> show tables;

Tables_in_test
authors
books
series

【describe】描述test表格

MariaDB [test]> describe books;

Field	Type	Null	Key	Default	Extra
BookID	int(11)	NO	PRI	NULL	auto_increment
Title	varchar(100)	NO		NULL
SeriesID	int(11)	YES		NULL
AuthorID	int(11)	YES		NULL

【INSERT INTO】在books里面添加内容 格式：

—-Title，SeriesID，AuthorID

MariaDB [test]> INSERT INTO books (Title,SeriesID,AuthorID） VALUES('The Fellowship of the Ring,1,1),
->  ('The Two Towers',1,1), ('The Return of the King',1,1),  ('The Sum of All Men',2,2），
->  ('Brotherhood of the Wolf',2,2), ('Wizardborn',2,2), ('The Hobbbit',0,1);

【select】显示test里面的全部内容

MariaDB [test]> select * from books;

BookID	Title	SeriesID	AuthorID
1	The Fellowship of the Ring	1	1
2	The Two Towers	1	1
3	The Return of the King	1	1
4	The Sum of All Men	2	2
5	Brotherhood of the Wolf	2	2
6	Wizardborn	2	2
7	The Hobbbit	0	1

【insert】插入数据

MariaDB [test]> insert into  books (Title,SeriesID,AuthorID)
-> values ("Lair of Bones",2,2);
Query OK, 1 row affected (0.00 sec)
MariaDB [test]> select  * from books;

BookID	Title	SeriesID	AuthorID
1	The Fellowship of the Ring	1	1
2	The Two Towers	1	1
3	The Return of the King	1	1
4	The Sum of All Men	2	2
5	Brotherhood of the Wolf	2	2
6	Wizardborn	2	2
7	The Hobbbit	0	1
8	Lair of Bones	2	2

【update】修改test里面的第七个数据update

MariaDB [test]> update books set Title = "The Hobbit" where BookID = 7；
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0
MariaDB [test]> select * from books;

BookID	Title	SeriesID	AuthorID
1	The Fellowship of the Ring	1	1
2	The Two Towers	1	1
3	The Return of the King	1	1
4	The Sum of All Men	2	2
5	Brotherhood of the Wolf	2	2
6	Wizardborn	2	2
7	The Hobbit	0	1
8	Lair of Bones	2	2