case when 记录

case when 使用：

 

CREATE TABLE `temp` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `date` varchar(45) DEFAULT NULL,
  `state` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ;


 INSERT INTO `temp` VALUES (1,'2010-05-09','1'),(2,'2010-05-09','1'),(3,'2010-05-09','0'),(4,'2010-05-09','0'),(5,'2010-05-10','1'),(
6,'2010-05-10','0'),(7,'2010-05-10','0');



SELECT date, sum(case when state='1' then 1 else 0 end) 'success',

                    sum(case when state='0' then 1 else 0 end) 'failed'

From temp group by date ;