mysql查表语句_MySQL

mysql查表语句

[sql]

describe table_name;

这个命令用来显示一个表格的结构

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

| Field | Type | Null | Key | Default | Extra |

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

| ID | int(11) | NO | PRI | NULL | |

| userName | char(20) | NO | | NULL | |

| password | char(20) | NO | | NULL | |

| niName | char(20) | NO | | NULL | |

| sex | char(10) | NO | | NULL | |

| phone | char(20) | YES | | NULL | |

| address | char(100) | YES | | NULL | |

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

和这个命令可以实现同样效果的是：

show columns from table_name;

show create table table_name;//显示某个表格被创建时所用的SQL语句

create table user | CREATE TABLE `user` (

`ID` int(11) NOT NULL,

`userName` char(20) NOT NULL,

`password` char(20) NOT NULL,

`niName` char(20) NOT NULL,

`sex` char(10) NOT NULL,

`phone` char(20) DEFAULT NULL,

`address` char(100) DEFAULT NULL,

PRIMARY KEY (`ID`)

) ENGINE=InnoDB DEFAULT CHARSET=latin1