【Mysql】如何查看mysql軟件版本信息

1、問題描述  
     今日上午接到同事的召喚，讓幫着給查看一下生產數據Mysql數據庫軟件版本。呵呵，對於小白的我，固然是先答應後學習嘍。而且漂亮的完成任務。  

2、實驗（非生產環境）  
1.登陸mysql環境時，有服務版本號，此處爲5.6.22  
  [root@suzzy ~]# 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 來查看版本信息  
   [root@suzzy ~]# mysql -V  
mysql  Ver 14.14 Distrib   5.6.22, for Linux (x86_64) using  EditLine wrapper  

3.使用 mysql --help 來查看版本信息  
  [root@suzzy ~]# mysql --help |grep Distrib  
mysql  Ver 14.14 Distrib   5.6.22, for Linux (x86_64) using  EditLine wrapper  
[root@suzzy ~]#  

4.進入mysql命令後，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.使用系統函數  
  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.查看變量  
  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)  

7.mysqladmin 命令方式  
  [root@suzzy ~]#  mysqladmin -uroot -p -hlocalhost version;  
Enter password:  
mysqladmin  Ver 8.42 Distrib   5.6.22, for Linux on x86_64  
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.  

Server version             5.6.22-enterprise-commercial-advanced  
Protocol version        10  
Connection              Localhost via UNIX socket  
UNIX socket             /var/lib/mysql/mysql.sock  
Uptime:                 46 days 7 min 45 sec  

Threads: 1  Questions: 133  Slow queries: 0  Opens: 48  Flush tables: 1  Open tables: 41  Queries per second avg: 0.000  

3、官方說明  2.1.1章節  
The naming scheme in MySQL 5.6 uses release names that consist of three numbers and a suffix; for example, mysql-5.6.1-m1. The numbers within the release name are interpreted as follows:  
The first number (5) is the major version and describes the file format. All MySQL 5 releases have the same file format.  
The second number (6) is the release level. Taken together, the major version and release level constitute the release series number.  
The third number (1) is the version number within the release series. This is incremented for each new release. Usually you want the latest version for the series you have chosen.  

4、總結：  
     看似簡單的工做，若是沒有接觸過人還真是不曉得。因此DBA的大小朋友們，把你不會的東西提前學習一下，會受益不淺的。想起來一句話（書到用時方恨少；事非通過不知難。）譯：知識老是在運用時才讓人感到太不夠了，許多事情若是不親身經歷過就不知道它有多難。