mysql client命令行端的容易忽视的命令

mysql client命令行端的容易忽视的命令
参考：
http://www.mysqlperformanceblog.com/2014/02/27/dba-101-sometimes-forgotten-functionality-mysql-client/

1) prompt 修改提示符
  mysql >\R Production >
PROMPT set to 'Production > '

mysql > \R \u@\h [\d]>
PROMPT set to '\u@\h [\d]>'
root@testbox [test]>


2)tee命令，可以将在mysql客户端的操作放到日志文件中
   mysql> \T /tmp/tee.log
Logging to file '/tmp/tee.log'
那么所有的操作都会放/tee.log中去
  

3） mysql> \s>可以看到当前客户端连接的参数，比如
   mysql> \s>
--------------
mysql  Ver 14.14 Distrib 5.6.15, for Linux (x86_64) using  EditLine wrapper
Connection id: 13149
Current database: sakila
Current user: root@localhost
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.6.15-63.0-log Percona Server (GPL), Release 63.0
Protocol version: 10
Connection: 127.0.0.1 via TCP/IP
Server characterset: latin1
Db     characterset: latin1
Client characterset: utf8
Conn.  characterset: utf8
TCP port: 3306
Uptime: 10 days 23 hours 32 min 57 sec
Threads: 1  Questions: 1203169  Slow queries: 43745  Opens: 626  Flush tables: 1  Open tables: 178  Queries per second avg: 1.268
--------------


4） \c clean命令
   清除输入
mysql> SELECT *
-> FROM city
-> \c
mysql>

5） pager命令，将长的语句分页显示
   mysql> \P cat > /tmp/voila.log
PAGER set to 'cat > /tmp/voila.log'
mysql> SELECT *  FROM city;
600 rows in set (0.01 sec)