1.
现有广告合同表Orders，表示广告在哪个广告位的哪几天需要播出
OrderID | Positioncode | Startdate | Enddate |
1 | A | 2015-11-01 | 2015-11-03 |
2 | C | 2015-11-02 | 2015-11-03 |
3 | B | 2015-11-01 | 2015-11-04 |
4 | A | 2015-11-03 | 2015-11-04 |
5 | C | 2015-11-01 | 2015-11-02 |
6 | B | 2015-11-02 | 2015-11-05 |
7 | A | 2015-11-02 | 2015-11-03 |
8 | A | 2015-11-04 | 2015-11-05 |
9 | C | 2015-11-03 | 2015-11-04 |
10 | C | 2015-11-02 | 2015-11-04 |
产品表 Product，表示每个广告位每天最多播几个广告
Positioncode | Showcount |
A | 2 |
B | 1 |
C | 3 |
要求查询出合同表中，超过广告位轮播数量的合同
Declare @Dup table (TmpDate datetime) Declare @minDate datetime,@maxDate datetime SELECT @minDate=MIN(StartDate),@maxDate=Max(EndDate) FROM Orders WHILE @minDate<=@MaxDate BEGIN INSERT INTO @Dup VALUES (@minDate) SET @minDate=@minDate+1 END SELECT distinct aa.* FROM Orders aa INNER JOIN ( SELECT Positioncode,tmpdate,count(*) as cnt FROM Orders a,@Dup b where tmpdate between a.startdate and a.enddate group by Positioncode,tmpdate )bb ON aa.PositionCode=bb.PositionCode AND bb.tmpDate Between aa.StartDate AND aa.ENdDate INNER JOIN Product cc ON bb.PositionCode=cc.PositionCode WHERE bb.cnt>cc.showcountOrder by PositionCode
| OrderId | PositionCode | StartDate | EndDate |
| 1 | A | 2015-11-01 | 2015-11-03 |
| 4 | A | 2015-11-03 | 2015-11-04 |
| 7 | A | 2015-11-02 | 2015-11-03 |
| 3 | B | 2015-11-01 | 2015-11-04 |
| 6 | B | 2015-11-02 | 2015-11-05 |
2.
请注意：该表中有很多科目，都有1－12月份的发生额。
AccID：科目代码，Occmonth：发生额月份， DebitOccur：发生额。
| AccId | Occmonth | DebitOccur |
| 101 | 1 | 100 |
| 102 | 1 | 200 |
| 103 | 1 | 300 |
| 101 | 2 | 400 |
| 102 | 2 | 300 |
| 103 | 2 | 500 |
| 101 | 3 | 300 |
| 104 | 3 | 400 |
| NULL | NULL | NULL |
select a.* from T_GetLargerDebitOccur a ,(select Occmonth,max(DebitOccur) Debit101ccur from T_GetLargerDebitOccur where AccID='101' group by Occmonth) b where a.Occmonth=b.Occmonth and a.DebitOccur>b.Debit101ccur
结果：
| AccId | Occmonth | DebitOccur |
| 102 | 1 | 200 |
| 103 | 1 | 300 |
| 104 | 2 | 500 |
| 105 | 3 | 400 |
To be continue...