深入PHP

　　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

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