【MYSQL】常用命令备忘录

• source

　　　　不接路径时，查找文件的路径是执行mysql命令时的路径

　　　　接路径时，使用路径+filename

[root@wordpressserver mysql]# vi demo.mysql
[root@wordpressserver mysql]# pwd
/root/mysql
[root@wordpressserver mysql]# ls -al
total 12
drwxr-xr-x.  2 root root 4096 Nov  2 21:45 .
dr-xr-x---. 31 root root 4096 Nov  2 21:49 ..
-rw-r--r--.  1 root root   87 Nov  2 21:45 demo.mysql
[root@wordpressserver mysql]# 

mysql> source demo.mysql
ERROR:
Failed to open file 'demo.mysql', error: 2
mysql> source /root/mysql/demo.mysql
Database changed
Query OK, 0 rows affected (0.01 sec)

mysql> show tables;
+----------------+
| Tables_in_demo |
+----------------+
| example        |
+----------------+
1 row in set (0.00 sec)

• 　　mysqldump 导出一个表，使用sql文件恢复表

[root@wordpressserver ~]# mysqldump -u root -p demodabasename exampletablename > sqldumptest1.sql
Enter password:
[root@wordpressserver ~]# ls
anaconda-ks.cfg  Desktop    Downloads  mysql     post-install      Public            Templates  vmtool             wordpress      wordpress-4.4.2-zh_CN.tar.gz
core.3990        Documents  Music      Pictures  post-install.log  sqldumptest1.sql  Videos     vmware-install.pl  wordpress (2)
[root@wordpressserver ~]# vi sqldumptest1.sql
[root@wordpressserver ~]# mysql -uroot -f demo < sqldumptest1.sql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
[root@wordpressserver ~]# mysql -uroot -p123456 -f demo < sqldumptest1.sql
[root@wordpressserver ~]# 

或者

[root@wordpressserver ~]# mysql -uroot -p123456 -f demo < /root/mysql/demo.mysql

-f是忽略错误然后继续执行
mysql> show tables;
+----------------+
| Tables_in_demo |
+----------------+
| example        |
+----------------+
1 row in set (0.00 sec)

mysql> desc example;
+-------+--------------+------+-----+---------+-------+
| Field | Type         | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+-------+
| id    | int(11)      | YES  |     | NULL    |       |
| data  | varchar(100) | YES  |     | NULL    |       |
+-------+--------------+------+-----+---------+-------+
2 rows in set (0.00 sec)

shell> mysqladmin create target_db_name
shell> mysql target_db_name < backup-file.sql
就是
shell> mysql 库名 < 文件名

或者

B:使用mysqldump命令

mysqldump -u username -p dbname < filename.sql

C:使用mysql命令

mysql -u username -p -D dbname < filename.sql