Chinaunix首页 | 论坛 | 博客
  • 博客访问: 689892
  • 博文数量: 95
  • 博客积分: 1754
  • 博客等级: 上尉
  • 技术积分: 1607
  • 用 户 组: 普通用户
  • 注册时间: 2010-03-12 10:06
文章分类

全部博文(95)

文章存档

2015年(3)

2013年(15)

2012年(77)

分类: Mysql/postgreSQL

2012-12-13 15:12:12

工作中应该开发的要求,需要对1月到12月的数据用列的方式表示出来。
表:
CREATE TABLE orders(cid INT,cname VARCHAR(50),createdate DATETIME)
SQL语句实现:
SELECT
b.cname,b.cid,
MAX(b.MaxTimeZuoGui) MaxTimeZuoGui,MIN(b.MinTimeZuoGui) MinTimeZuoGui,
SUM(b.month1) month1,SUM(b.month2) month2,
SUM(b.month3) month3,SUM(b.month4) month4,
SUM(b.month5) month4,SUM(b.month6) month6,
SUM(b.month7) month7,SUM(b.month8) month8,
SUM(b.month9) month9,SUM(b.month10) month10,
SUM(b.month11) month11,SUM(b.month12) month12,
SUM(b.month1+b.month2+b.month3+b.month4+b.month5+b.month6+b.month7+b.month8+b.month9+b.month10+b.month11+b.month12) AmountCount
FROM
(SELECT a.cid cid ,a.cname cname,a.MaxTimeZuoGui,a.MinTimeZuoGui,
CASE WHEN mondate=1 THEN counts ELSE 0 END month1,
CASE WHEN mondate =2 THEN counts ELSE 0 END month2,
CASE WHEN mondate =03 THEN counts ELSE 0 END month3,
CASE WHEN mondate =04 THEN counts ELSE 0 END month4,
CASE WHEN mondate =05 THEN counts ELSE 0 END month5,
CASE WHEN mondate =06 THEN counts ELSE 0 END month6,
CASE WHEN mondate =07 THEN counts ELSE 0 END month7,
CASE WHEN mondate =08 THEN counts ELSE 0 END month8,
CASE WHEN mondate =09 THEN counts ELSE 0 END month9,
CASE WHEN mondate =10 THEN counts ELSE 0 END month10,
CASE WHEN mondate =11 THEN counts ELSE 0 END month11,
CASE WHEN mondate =12 THEN counts ELSE 0 END month12
FROM (SELECT cid,cname,COUNT(*) counts,
MAX(createdate) MaxTimeZuoGui,
MIN(createdate) MinTimeZuoGui,DATE_FORMAT(createdate,'%m') mondate
FROM orders
GROUP BY cid,cname,DATE_FORMAT(createdate,'%m')) a) b
GROUP BY b.cname,b.cid;
阅读(4742) | 评论(0) | 转发(0) |
给主人留下些什么吧!~~