select
BatchId,sum(CardSum) 总金额,
sum(case when Status=1 then CardSum else 0 end) as 已使用,
sum(case when Status=2 then CardSum else 0 end) as 已冻结
from GiftCard
group by BatchId

select year(AddTime) 年,month(AddTime) 月,day(AddTime) 日,COUNT(1) 数量,sum(CardSum) 销售合计
from GiftCard
group by year(AddTime),month(AddTime),day(AddTime)

select COUNT(BatchId),COUNT(distinct BatchId),COUNT(distinct BatchName)
from GiftCard

SELECT *
FROM (SELECT BatchName, CardSum as TotAmount FROM GiftCard) as s
PIVOT
(    SUM(TotAmount)FOR BatchName IN (zx测试商品, test新人优惠券,测试高考大放送)
)AS MyPivot

SELECT
(CASE WHEN EXISTS(SELECT * FROM GiftCard b WHERE b.Id = 1) THEN MIN(Id) + 1 ELSE 1 END) as Id
FROM GiftCardWHERE NOT Id IN (SELECT a.Id - 1 FROM GiftCard a)

select * from GiftCard a where not exists(select 1 from GiftCard where BatchName=a.BatchName and ID<a.ID)

select year(AddTime) as '年',
SUM(case when MONTH(AddTime)=1 then CardSum else 0 end ) as '一月',
SUM(case when MONTH(AddTime)=2 then CardSum else 0 end ) as '二月',
SUM(case when MONTH(AddTime)=3 then CardSum else 0 end ) as '三月',
SUM(case when MONTH(AddTime)=4 then CardSum else 0 end ) as '四月',
SUM(case when MONTH(AddTime)=5 then CardSum else 0 end ) as '五月',
SUM(case when MONTH(AddTime)=6 then CardSum else 0 end ) as '六月',
SUM(case when MONTH(AddTime)=7 then CardSum else 0 end ) as '七月',
SUM(case when MONTH(AddTime)=8 then CardSum else 0 end ) as '八月',
SUM(case when MONTH(AddTime)=9 then CardSum else 0 end ) as '九月',
SUM(case when MONTH(AddTime)=10 then CardSum else 0 end ) as '十月',
SUM(case when MONTH(AddTime)=11 then CardSum else 0 end ) as '十一月',
SUM(case when MONTH(AddTime)=12 then CardSum else 0 end ) as '十二月'from GiftCardgroup by year(AddTime)

作者：章为忠 
出处：http://www.fpeach.com/ 
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