一、问题描述
今日上午接到同事的召唤，让帮着给查看一下生产数据MySQL数据库软件版本。呵呵，对于小白的我，当然是先答应后学习喽。并且漂亮的完成任务。
二、实验（非生产环境）
1.登录mysql环境时，有服务版本号，此处为5.6.22
[root@linuxidc ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 39
Server version: 5.6.22-enterprise-commercial-advanced MySQL Enterprise Server - Advanced Edition (Commercial)
Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
2.使用 mysql -V 来查看版本信息
[root@linuxidc ~]# mysql -V
mysql Ver 14.14 Distrib 5.6.22, for Linux (x86_64) using EditLine wrapper
3.使用 mysql --help 来查看版本信息
[root@linuxidc ~]# mysql --help |grep Distrib
mysql Ver 14.14 Distrib 5.6.22, for Linux (x86_64) using EditLine wrapper
[root@linuxidc ~]#
4.进入mysql命令后，使用status命令
mysql> status
--------------
mysql Ver 14.14 Distrib 5.6.22, for Linux (x86_64) using EditLine wrapper
Connection id: 51
Current database:
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.6.22-enterprise-commercial-advanced MySQL Enterprise Server - Advanced Edition (Commercial)
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: latin1
Db characterset: latin1
Client characterset: utf8
Conn. characterset: utf8
UNIX socket: /var/lib/mysql/mysql.sock
Uptime: 45 days 23 hours 9 min 46 sec
Threads: 1 Questions: 124 Slow queries: 0 Opens: 48 Flush tables: 1 Open tables: 41 Queries per second avg: 0.000
5.使用系统函数
mysql> select version();
+---------------------------------------+
| version() |
+---------------------------------------+
| 5.6.22-enterprise-commercial-advanced |
+---------------------------------------+
1 row in set (0.00 sec)
mysql> select @@version;
+---------------------------------------+
| @@version |
+---------------------------------------+
| 5.6.22-enterprise-commercial-advanced |
+---------------------------------------+
1 row in set (0.00 sec)
6.查看变量
mysql> show variables like '%version%';
+-------------------------+---------------------------------------------------------+
| Variable_name | Value |
+-------------------------+---------------------------------------------------------+
| innodb_version | 5.6.22 |
| protocol_version | 10 |
| slave_type_conversions | |
| version | 5.6.22-enterprise-commercial-advanced |
| version_comment | MySQL Enterprise Server - Advanced Edition (Commercial) |
| version_compile_machine | x86_64 |
| version_compile_os | Linux |
+-------------------------+---------------------------------------------------------+
7 rows in set (0.00 sec)