mysql desc命令用于查看表结构,是DESCRIBE命令的简写形式。
mysql desc命令语法:
desc tablename
该命令会显示表哪些信息呢?具体包括:
实例:
mysql> CREATE TABLE employee ( -> ID INT(2) auto_increment primary key, -> First_name VARCHAR(20), -> Last_name VARCHAR(30), -> Start_date DATE, -> Salary int(6), -> city VARCHAR(20), -> description VARCHAR(20) -> );Query OK, 0 rows affected (0.02 sec)mysql>mysql> desc employee;+-------------+-------------+------+-----+---------+----------------+| Field | Type | Null | Key | Default | Extra |+-------------+-------------+------+-----+---------+----------------+| ID | int(2) | NO | PRI | NULL | auto_increment || First_name | varchar(20) | YES | | NULL | || Last_name | varchar(30) | YES | | NULL | || Start_date | date | YES | | NULL | || Salary | int(6) | YES | | NULL | || city | varchar(20) | YES | | NULL | || description | varchar(20) | YES | | NULL | |+-------------+-------------+------+-----+---------+----------------+7 rows in set (0.00 sec)
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