关于FULL　JOIN连接查询的问题￣￣！

DumDum 2008-09-09 04:21:51
现在有两个表需要用到FULL　JOIN连接查询，一个表是年销售计划，就是一年12个月那个月那个部门销售某个商品多少，另一个表销售明细表，就是在某一时间，那个部门卖闻某个商品多少。下面是我的查询



select isnull(a.syear,b.syear) as syear,

       isnull(a.DepartmentID,b.DepartmentID) as DepartmentID,

       isnull(a.CommodityID,b.CommodityID) as CommodityID

from

(select  sYear ,DepartmentID,CommodityID,

        sum(case  when sMOnth =1 then  isnull(quantity,0) else 0 end) as P01,

        sum(case  when sMOnth =2 then  isnull(quantity,0) else 0 end) as P02,

        sum(case  when sMOnth =3 then  isnull(quantity,0) else 0 end) as P03,

        sum(case  when sMOnth =4 then  isnull(quantity,0) else 0 end) as P04,

        sum(case  when sMOnth =5 then  isnull(quantity,0) else 0 end) as P05,

        sum(case  when sMOnth =6 then  isnull(quantity,0) else 0 end) as P06,

        sum(case  when sMOnth =7 then  isnull(quantity,0) else 0 end) as P07,

        sum(case  when sMOnth =8 then  isnull(quantity,0) else 0 end) as P08,

        sum(case  when sMOnth =9 then  isnull(quantity,0) else 0 end) as P09,

        sum(case  when sMOnth =10 then  isnull(quantity,0) else 0 end) as P10,

        sum(case  when sMOnth =11 then  isnull(quantity,0) else 0 end) as P11,

        sum(case  when sMOnth =12 then  isnull(quantity,0) else 0 end) as P12

from  tSalePlan

group by sYear,DepartmentID,CommodityID

) as a

full join 

(select  year(sDate) as sYear ,DepartmentID,CommodityID,

        sum(case  when month(sDate) =1 then  isnull(quantity,0) else 0 end) as S01,

        sum(case  when month(sDate) =2 then  isnull(quantity,0) else 0 end) as S02,

        sum(case  when month(sDate) =3 then  isnull(quantity,0) else 0 end) as S03,

        sum(case  when month(sDate) =4 then  isnull(quantity,0) else 0 end) as S04,

        sum(case  when month(sDate) =5 then  isnull(quantity,0) else 0 end) as S05,

        sum(case  when month(sDate) =6 then  isnull(quantity,0) else 0 end) as S06,

        sum(case  when month(sDate) =7 then  isnull(quantity,0) else 0 end) as S07,

        sum(case  when month(sDate) =8 then  isnull(quantity,0) else 0 end) as S08,

        sum(case  when month(sDate) =9 then  isnull(quantity,0) else 0 end) as S09,

        sum(case  when month(sDate) =10 then  isnull(quantity,0) else 0 end) as S10,

        sum(case  when month(sDate) =11 then  isnull(quantity,0) else 0 end) as S11,

        sum(case  when month(sDate) =12 then  isnull(quantity,0) else 0 end) as S12

from  tSaleOrder

group by  year(sDate),DepartmentID,CommodityID) as b

on a.sYear =b.sYear and a.DepartmentID=b.DepartmentID and a.CommodityID =b.CommodityID

order by a.sYear,a.DepartmentID,a.CommodityID


里面的单个查询没有问题，现在FULL　JOin连接查询后，SYear,DepartmentID,CommodityID这三个字段能匹配的数据没有合并，被分拆成多条数据了￣￣！不知道为什么￣￣！那个大哥帮看看￣￣！
我另有一个DepartmentID,CommodityID这两个字段匹配的相似的查询没有问题，就这个不知道为什么不行￣￣！
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DumDum 2008-09-09
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不过试试另外两个有没有空格了
DumDum 2008-09-09
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Syear都是int的
Herb2 2008-09-09
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on a.sYear =b.sYear and a.DepartmentID=b.DepartmentID and a.CommodityID =b.CommodityID

＝＝＝》

on rtrim(a.sYear) = rtrim(b.sYear) 

   and ltrim(rtrim(a.DepartmentID))=ltrim(rtrim(b.DepartmentID))

   and ltrim(rtrim(a.CommodityID)) =ltrim(rtrim(b.CommodityID))
Garnett_KG 2008-09-09
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但是结果比如：
年份　　部门ID　　商品ID　1　　2　　3　　4　　5　　6　　7　　8　　9　　10　　11　　12
----------------------------------------------------------------------------------
2007 A0001 G0001 236 0 0 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 360 0 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 0 120 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 0 0 360 0 0 0 0 0 0 0 　 0
---------------------------------------------------------------------------------------

哦..

a.sYear =b.sYear and a.DepartmentID=b.DepartmentID and a.CommodityID =b.CommodityID

应该是有这三个条件有看起来值相同但不匹配的资料了

慢慢查吧。
Herb2 2008-09-09
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还有就是你的部门ID和产品ID 的类型是否一个是char型，另一个是varchar型
Herb2 2008-09-09
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1、(select sYear ,DepartmentID,CommodityID,
2、(select year(sDate) as sYear ,DepartmentID,CommodityID,
确定你1中的syear是否是 int类型，因为2中的year(sDate) 肯定是int类型的


DumDum 2008-09-09
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我说的分拆的意思是存在多条SYear,DepartmentID,CommodityID一样，只是销售在不同的月份里面，
select isnull(a.syear,b.syear) as syear,

       isnull(a.DepartmentID,b.DepartmentID) as DepartmentID,

       isnull(a.CommodityID,b.CommodityID) as CommodityID

       a.*,b.*

       isnull(a.P01,0) - isnull(b.S01,0)  as R01,

       isnull(a.P02,0) - isnull(b.S01,0)  as R02,

       isnull(a.P03,0) - isnull(b.S01,0)  as R03,

       isnull(a.P04,0) - isnull(b.S01,0)  as R04,

       isnull(a.P05,0) - isnull(b.S01,0)  as R05,

       isnull(a.P06,0) - isnull(b.S01,0)  as R06,

       isnull(a.P07,0) - isnull(b.S01,0)  as R07,

       isnull(a.P08,0) - isnull(b.S01,0)  as R08, 

       isnull(a.P09,0) - isnull(b.S01,0)  as R09,

       isnull(a.P10,0) - isnull(b.S01,0)  as R10,

       isnull(a.P11,0) - isnull(b.S01,0)  as R11,

       isnull(a.P12,0) - isnull(b.S01,0)  as R12

from

(select  sYear ,DepartmentID,CommodityID,

        sum(case  when sMOnth =1 then  isnull(quantity,0) else 0 end) as P01,

        sum(case  when sMOnth =2 then  isnull(quantity,0) else 0 end) as P02,

        sum(case  when sMOnth =3 then  isnull(quantity,0) else 0 end) as P03,

        sum(case  when sMOnth =4 then  isnull(quantity,0) else 0 end) as P04,

        sum(case  when sMOnth =5 then  isnull(quantity,0) else 0 end) as P05,

        sum(case  when sMOnth =6 then  isnull(quantity,0) else 0 end) as P06,

        sum(case  when sMOnth =7 then  isnull(quantity,0) else 0 end) as P07,

        sum(case  when sMOnth =8 then  isnull(quantity,0) else 0 end) as P08,

        sum(case  when sMOnth =9 then  isnull(quantity,0) else 0 end) as P09,

        sum(case  when sMOnth =10 then  isnull(quantity,0) else 0 end) as P10,

        sum(case  when sMOnth =11 then  isnull(quantity,0) else 0 end) as P11,

        sum(case  when sMOnth =12 then  isnull(quantity,0) else 0 end) as P12

from  tSalePlan

group by sYear,DepartmentID,CommodityID

) as a

full join 

(select  year(sDate) as sYear ,DepartmentID,CommodityID,

        sum(case  when month(sDate) =1 then  isnull(quantity,0) else 0 end) as S01,

        sum(case  when month(sDate) =2 then  isnull(quantity,0) else 0 end) as S02,

        sum(case  when month(sDate) =3 then  isnull(quantity,0) else 0 end) as S03,

        sum(case  when month(sDate) =4 then  isnull(quantity,0) else 0 end) as S04,

        sum(case  when month(sDate) =5 then  isnull(quantity,0) else 0 end) as S05,

        sum(case  when month(sDate) =6 then  isnull(quantity,0) else 0 end) as S06,

        sum(case  when month(sDate) =7 then  isnull(quantity,0) else 0 end) as S07,

        sum(case  when month(sDate) =8 then  isnull(quantity,0) else 0 end) as S08,

        sum(case  when month(sDate) =9 then  isnull(quantity,0) else 0 end) as S09,

        sum(case  when month(sDate) =10 then  isnull(quantity,0) else 0 end) as S10,

        sum(case  when month(sDate) =11 then  isnull(quantity,0) else 0 end) as S11,

        sum(case  when month(sDate) =12 then  isnull(quantity,0) else 0 end) as S12

from  tSaleOrder

group by  year(sDate),DepartmentID,CommodityID) as b

on a.sYear =b.sYear and a.DepartmentID=b.DepartmentID and a.CommodityID =b.CommodityID

order by a.sYear,a.DepartmentID,a.CommodityID

但是结果比如：
年份　　部门ID　　商品ID　1　　2　　3　　4　　5　　6　　7　　8　　9　　10　　11　　12
----------------------------------------------------------------------------------
2007 A0001 G0001 236 0 0 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 360 0 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 0 120 0 0 0 0 0 0 0 0 0
2007 A0001 G0001 0 0 0 360 0 0 0 0 0 0 0 　 0
---------------------------------------------------------------------------------------
DumDum 2008-09-09
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计划里面有的可能销售里面一次也没有销售过，而销售里面有的但是可能又没有做计划，所以两个表的数据是都需要的，inner join达不到要求￣￣！
中国风 2008-09-09
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被分拆成多条数据
------------
一對多數據

改為union all連接兩個結果集
子陌红尘 2008-09-09
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那就确认一下a.sYear=b.sYear 这部分外联接条件是否存在问题，注意字段类型的差异。
Garnett_KG 2008-09-09
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你的tSaleOrder 、tSalePlan 的sDate是不是不止一年的数据量哦?


--加个 sDate between '20080101' AND '20081231' 的条件试试



select isnull(a.syear,b.syear) as syear,

       isnull(a.DepartmentID,b.DepartmentID) as DepartmentID,

       isnull(a.CommodityID,b.CommodityID) as CommodityID

from

(select  sYear ,DepartmentID,CommodityID,

        sum(case  when sMOnth =1 then  isnull(quantity,0) else 0 end) as P01,

        sum(case  when sMOnth =2 then  isnull(quantity,0) else 0 end) as P02,

        sum(case  when sMOnth =3 then  isnull(quantity,0) else 0 end) as P03,

        sum(case  when sMOnth =4 then  isnull(quantity,0) else 0 end) as P04,

        sum(case  when sMOnth =5 then  isnull(quantity,0) else 0 end) as P05,

        sum(case  when sMOnth =6 then  isnull(quantity,0) else 0 end) as P06,

        sum(case  when sMOnth =7 then  isnull(quantity,0) else 0 end) as P07,

        sum(case  when sMOnth =8 then  isnull(quantity,0) else 0 end) as P08,

        sum(case  when sMOnth =9 then  isnull(quantity,0) else 0 end) as P09,

        sum(case  when sMOnth =10 then  isnull(quantity,0) else 0 end) as P10,

        sum(case  when sMOnth =11 then  isnull(quantity,0) else 0 end) as P11,

        sum(case  when sMOnth =12 then  isnull(quantity,0) else 0 end) as P12

from  tSalePlan

group by sYear,DepartmentID,CommodityID

) as a

full join 

(select  year(sDate) as sYear ,DepartmentID,CommodityID,

        sum(case  when month(sDate) =1 then  isnull(quantity,0) else 0 end) as S01,

        sum(case  when month(sDate) =2 then  isnull(quantity,0) else 0 end) as S02,

        sum(case  when month(sDate) =3 then  isnull(quantity,0) else 0 end) as S03,

        sum(case  when month(sDate) =4 then  isnull(quantity,0) else 0 end) as S04,

        sum(case  when month(sDate) =5 then  isnull(quantity,0) else 0 end) as S05,

        sum(case  when month(sDate) =6 then  isnull(quantity,0) else 0 end) as S06,

        sum(case  when month(sDate) =7 then  isnull(quantity,0) else 0 end) as S07,

        sum(case  when month(sDate) =8 then  isnull(quantity,0) else 0 end) as S08,

        sum(case  when month(sDate) =9 then  isnull(quantity,0) else 0 end) as S09,

        sum(case  when month(sDate) =10 then  isnull(quantity,0) else 0 end) as S10,

        sum(case  when month(sDate) =11 then  isnull(quantity,0) else 0 end) as S11,

        sum(case  when month(sDate) =12 then  isnull(quantity,0) else 0 end) as S12

from  tSaleOrder

where sDate between '20080101' AND '20081231' 

group by  year(sDate),DepartmentID,CommodityID) as b

on a.sYear =b.sYear and a.DepartmentID=b.DepartmentID and a.CommodityID =b.CommodityID

order by a.sYear,a.DepartmentID,a.CommodityID


水族杰纶 2008-09-09
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