mysql -e加v简化代码_MySQL

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mysql -e加v简化代码

用 mysql -e 生成结果导入指定文件时：

● 若要同时显示语句本身：-v

● 若要增加查询结果行数：-vv

● 若要增加执行时间：-vvv

在一些监控脚本中可以用来简化代码

[plain]

㈠ 不带 v 测试：

[mysql@even ~]$ mysql -uroot -poracle -e "SELECT VERSION();SELECT NOW()" > /home/mysql/test.sql

[mysql@even ~]$ cat /home/mysql/test.sql

VERSION()

5.5.16-log

NOW()

2013-05-08 18:06:35

㈡ 带一个 v 测试：

[mysql@even ~]$ mysql -uroot -poracle -e "SELECT VERSION();SELECT NOW()" -v > /home/mysql/test02.sql

[mysql@even ~]$ cat /home/mysql/test02.sql

--------------

SELECT VERSION()

--------------

VERSION()

5.5.16-log

--------------

SELECT NOW()

--------------

NOW()

2013-05-08 18:08:40

㈢ 带两个 v 测试：

[mysql@even ~]$ mysql -uroot -poracle -e "SELECT VERSION();SELECT NOW()" -vv > /home/mysql/test03.sql

[mysql@even ~]$ cat /home/mysql/test03.sql

--------------

SELECT VERSION()

--------------

VERSION()

5.5.16-log

1 row in set

--------------

SELECT NOW()

--------------

NOW()

2013-05-08 18:14:05

1 row in set

Bye

㈢ 带三个 v 测试：

[mysql@even ~]$ mysql -uroot -poracle -e "SELECT VERSION();SELECT NOW()" -vvv > /home/mysql/test04.sql

[mysql@even ~]$ cat /home/mysql/test04.sql

--------------

SELECT VERSION()

--------------

+------------+

| VERSION() |

+------------+

| 5.5.16-log |

+------------+

1 row in set (0.00 sec)

--------------

SELECT NOW()

--------------

+---------------------+

| NOW() |

+---------------------+

| 2013-05-08 18:14:49 |

+---------------------+

1 row in set (0.00 sec)

Bye

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