查看mysql表结构和表创建语句的方法

查看mysql表结构的方法有三种：  
1、desc tablename;  
例如：  
要查看jos_modules表结构的命令：  
desc jos_modules;  
查看结果：  
mysql> desc jos_modules;  
+------------------+---------------------+------+-----+---------------------+----------------+  
| Field            | Type                | Null | Key | Default             | Extra          |  
+------------------+---------------------+------+-----+---------------------+----------------+  
| id               | int(11)             | NO   | PRI | NULL                | auto_increment |  
| title            | text                | NO   |     | NULL                |                |  
| content          | text                | NO   |     | NULL                |                |  
| ordering         | int(11)             | NO   |     | 0                   |                |  
| position         | varchar(50)         | YES |     | NULL                |                |  
| checked_out      | int(11) unsigned    | NO   |     | 0                   |                |  
| checked_out_time | datetime            | NO   |     | 0000-00-00 00:00:00 |                |  
| published        | tinyint(1)          | NO   | MUL | 0                   |                |  
| module           | varchar(50)         | YES | MUL | NULL                |                |  
| numnews          | int(11)             | NO   |     | 0                   |                |  
| access           | tinyint(3) unsigned | NO   |     | 0                   |                |  
| showtitle        | tinyint(3) unsigned | NO   |     | 1                   |                |  
| params           | text                | NO   |     | NULL                |                |  
| iscore           | tinyint(4)          | NO   |     | 0                   |                |  
| client_id        | tinyint(4)          | NO   |     | 0                   |                |  
| control          | text                | NO   |     | NULL                |                |  
+------------------+---------------------+------+-----+---------------------+----------------+  
2、show create table tablename;  
例如：  
要查看jos_modules表结构的命令：  
show create table jos_modules;  
查看结果：  
mysql> show create table jos_modules;  
jos_modules | CREATE TABLE `jos_modules` (  
`id` int(11) NOT NULL AUTO_INCREMENT,  
`title` text NOT NULL,  
`content` text NOT NULL,  
`ordering` int(11) NOT NULL DEFAULT '0',  
`position` varchar(50) DEFAULT NULL,  
`checked_out` int(11) unsigned NOT NULL DEFAULT '0',  
`checked_out_time` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',  
`published` tinyint(1) NOT NULL DEFAULT '0',  
`module` varchar(50) DEFAULT NULL,  
`numnews` int(11) NOT NULL DEFAULT '0',  
`access` tinyint(3) unsigned NOT NULL DEFAULT '0',  
`showtitle` tinyint(3) unsigned NOT NULL DEFAULT '1',  
`params` text NOT NULL,  
`iscore` tinyint(4) NOT NULL DEFAULT '0',  
`client_id` tinyint(4) NOT NULL DEFAULT '0',  
`control` text NOT NULL,  
PRIMARY KEY (`id`),  
KEY `published` (`published`,`access`),  
KEY `newsfeeds` (`module`,`published`)  
) ENGINE=MyISAM AUTO_INCREMENT=145 DEFAULT CHARSET=utf8  
3、use information_schema;select * from columns where table_name='tablename'  
例如：  
要查看jos_modules表结构的命令：  
use information_schema;  
select * from columns where table_name='jos_modules';  
查看结果：  
略。  
如果要查看怎么建立数据表的命令用第二种方法最佳。  

　　https://blog.csdn.net/business122/article/details/7531291