Mysql 行列转换

标签：mysql   行列转换   

CREATE TABLE `gas` (
	`id` INT(11) NOT NULL AUTO_INCREMENT,
	`oil` VARCHAR(100) NULL DEFAULT NULL,
	`district` VARCHAR(100) NULL DEFAULT NULL,
	`price` DOUBLE NULL DEFAULT '0',
	PRIMARY KEY (`id`)
)
ENGINE=InnoDB
AUTO_INCREMENT=11;

2、测试数据如下，select * from gas;

|  9 | #97  | 罗湖     | 33    |

3、行列转换：

select ifnull(oil,'total') as oil,
sum(if(district='宝安',price,0)) AS BA,
sum(if(district='福田',price,0)) AS FT,
sum(if(district='罗湖',price,0)) AS LH,
SUM(price) AS TOTAL
from gas
group by oil with rollup ;

| oil     | BA | FT | LH | TOTAL  |
| #0     | 11 | 12 | 13  | 36          |
| #93   | 21 | 22 | 23  | 66          |
| #97   | 31 | 32 | 33  | 96          |
| total  | 63 | 66 | 69  | 198        |

Mysql 行列转换

标签：mysql   行列转换   

原文地址：http://blog.csdn.net/rongku/article/details/46851443