修改mysql字段顺序的方法

如果需要修改mysql字段的顺序，应该怎么做呢？下面就将为您介绍修改mysql字段顺序的方法，原表结构如下：

 
 
 

  
  
  
CREATE TABLE `tb_area_collect_school_week` (                         
  
  
  
                               `id` char(36) NOT NULL,                                            
  
  
  
                               `date_entered` varchar(20) NOT NULL,                               
  
  
  
                               `date_modified` datetime NOT NULL,                                 
  
  
  
                               `assigned_user_id` char(36) default NULL,                          
  
  
  
                               `modified_user_id` char(36) default NULL,                          
  
  
  
                               `created_by` char(36) default NULL,                                
  
  
  
                               `name` varchar(50) NOT NULL,                                       
  
  
  
                               `description` mediumtext,                                          
  
  
  
                               `deleted` tinyint(1) NOT NULL default '0',                         
  
  
  
                               `qy_id` int(10) unsigned NOT NULL auto_increment COMMENT '序号',   
  
  
  
                               `provinces` varchar(50) default NULL COMMENT '省份',               
  
  
  
                               `city` varchar(50) NOT NULL COMMENT '地市',                                                       
  
  
  
                               `school_open_up` int(20) NOT NULL COMMENT '开通学校数',            
  
  
  
                               `school_cover_percent` varchar(50) NOT NULL COMMENT '覆盖率',      
  
  
  
                               `school_count` int(20) NOT NULL COMMENT '学校总数',   
  
  
  
                               `area` varchar(50) default NULL,                 
  
  
  
                               `date` varchar(10) NOT NULL COMMENT '日期',                        
  
  
  
                               `system` varchar(10) default NULL COMMENT '系统',                  
  
  
  
                               PRIMARY KEY USING BTREE (`id`,`qy_id`),                           
  
  
  
                               KEY `provinces` USING BTREE (`provinces`),                         
  
  
  
                               KEY `city` USING BTREE (`city`),                                   
  
  
  
                               KEY `area` USING BTREE (`area`),                                   
  
  
  
                               KEY `date` USING BTREE (`date`),                                   
  
  
  
                               KEY `SYSTEM` (`system`)                                            
  
  
  
                             ) ENGINE=MyISAM DEFAULT CHARSET=gbk  
 
 
 

原来表结构是这样，现在要表结构变成

 
 
 

  
  
  
CREATE TABLE `tb_area_collect_school_week` (                          
  
  
  
                               `id` char(36) NOT NULL,                                             
  
  
  
                               `date_entered` varchar(20) NOT NULL,                                
  
  
  
                               `date_modified` datetime NOT NULL,                                  
  
  
  
                               `assigned_user_id` char(36) default NULL,                           
  
  
  
                               `modified_user_id` char(36) default NULL,                           
  
  
  
                               `created_by` char(36) default NULL,                                 
  
  
  
                               `name` varchar(50) NOT NULL,                                        
  
  
  
                               `description` mediumtext,                                           
  
  
  
                               `deleted` tinyint(1) NOT NULL default '0',                          
  
  
  
                               `qy_id` int(10) unsigned NOT NULL auto_increment COMMENT '序号',   
  
  
  
                               `provinces` varchar(50) default NULL COMMENT '省份',                
  
  
  
                               `city` varchar(50) NOT NULL COMMENT '地市',                         
  
  
  
                               `area` varchar(50) default NULL,                                    
  
  
  
                               `school_open_up` int(20) NOT NULL COMMENT '开通学校数',             
  
  
  
                               `school_cover_percent` varchar(50) NOT NULL COMMENT '覆盖率',       
  
  
  
                               `school_count` int(20) NOT NULL COMMENT '学校总数',                 
  
  
  
                               `date` varchar(10) NOT NULL COMMENT '日期',                         
  
  
  
                               `system` varchar(10) default NULL COMMENT '系统',                   
  
  
  
                               PRIMARY KEY USING BTREE (`id`,`qy_id`),                            
  
  
  
                               KEY `provinces` USING BTREE (`provinces`),                          
  
  
  
                               KEY `city` USING BTREE (`city`),                                    
  
  
  
                               KEY `area` USING BTREE (`area`),                                    
  
  
  
                               KEY `date` USING BTREE (`date`),                                    
  
  
  
                               KEY `SYSTEM` (`system`)                                             
  
  
  
                             ) ENGINE=MyISAM DEFAULT CHARSET=gbk   
  
  
  
 
 
 
 

修改mysql字段顺序的方法：

 
 
 

  
  
  
ALTER TABLE `tb_area_collect_school_week` CHANGE `area` `area` VARCHAR(50) AFTER `city` ;  
 
 
 

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名称栏目：修改mysql字段顺序的方法
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