构造表sql语句:
DROP TABLE IF EXISTS `hr_new_sign_activities_field_data`; CREATE TABLE `hr_new_sign_activities_field_data` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `field_id` int(11) unsigned NOT NULL DEFAULT '0' COMMENT '字段ID', `value` varchar(255) DEFAULT NULL COMMENT '提交过来的数据', `acitvity_info_id` int(11) NOT NULL DEFAULT '0' COMMENT '表hr_new_sign_activities_info的自增ID', PRIMARY KEY (`id`), KEY `acitvity_info_id` (`acitvity_info_id`) ) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8 COMMENT='用户提交的表单数据----这个主要是存储的后台设置的字段,用户提交的字段数据'; -- ---------------------------- -- Records of hr_new_sign_activities_field_data -- ---------------------------- INSERT INTO `hr_new_sign_activities_field_data` VALUES ('6', '38', '我的企业', '5'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('7', '39', '13985623562', '5'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('8', '40', '13985623562@qq.com', '5'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('15', '38', '我的企业哈', '8'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('16', '39', '13652356524', '8'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('17', '40', 'wangjian@shixiba.com', '8'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('18', '38', 'sasassasasa', '9'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('19', '39', '13985236523', '9'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('20', '40', '13985236523@qq.com', '9'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('24', '38', '我速度1', '11'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('25', '39', '13562354125', '11'); INSERT INTO `hr_new_sign_activities_field_data` VALUES ('26', '40', '1253652361@qq.com', '11');
我现在的数据表是这样的
我现在期望转化为
目前我的sql语句是这样的
select acitvity_info_id , CASE value when '38' then value else '' end as field_38, CASE value when '39' then value else '' end as field_39 , CASE value when '40' then value else '' end as field_40 from hr_new_sign_activities_field_data where acitvity_info_id in (5,8,9 , 11) GROUP BY acitvity_info_id
sql语句的效果如下:
我期望的最终效果如下:
已经找到解决办法了
select m.acitvity_info_id , CASE m.value when '38' then m.value else (select value from hr_new_sign_activities_field_data where acitvity_info_id =m.acitvity_info_id and field_id=38) end as field_38, CASE value when '39' then value else (select value from hr_new_sign_activities_field_data where acitvity_info_id =m.acitvity_info_id and field_id=39) end as field_39 , CASE value when '40' then value else (select value from hr_new_sign_activities_field_data where acitvity_info_id =m.acitvity_info_id and field_id=40) end as field_40 from hr_new_sign_activities_field_data m where acitvity_info_id in (5,8,9 , 11) GROUP BY acitvity_info_id