05-命令行_MySQL的常用技巧

缘由:直接进行mysql查询时,有时查询结果字段较多,命名行下显示效果很不友好;   
     可以直接以 \G 替换分号结束sql语句,例如:select user,host from user\G
    mysql> select user,host from user\G
    *************************** 1. row ***************************
    user: root
    host: %
    *************************** 2. row ***************************
    user: mysql.infoschema
    host: localhost
    *************************** 3. row ***************************
    user: mysql.session
    host: localhost
    *************************** 4. row ***************************
    user: mysql.sys
    host: localhost
    *************************** 5. row ***************************
    user: root
    host: localhost
    5 rows in set (0.00 sec)

    mysql>

2.concat、concat_ws、group_concat的使用

参考博客:https://blog.csdn.net/u013991521/article/details/80805604

3.创建表的过程中comment 字段可以进行注释

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