Question

我想在虚拟表中附加/更新记录。

 TableA(ID,IdentifyingNumber,Included) TableB(ID,IdentifyingNumber,Included)

   Records in TableA 
             1, 101, 0
             2, 102, 1
             3, 103, 1

   Records in TableB 
             1, 201, 0
             2, 202, 0

我需要在TableC

中输出两个表记录

TableC(IdentifyingNumberA,IncludedA,IdentifyingNumberB,IncludedB)
    Records in TableC
               101, 0,  201, 0
               102, 1,  202, 0
               103, 1,  Null, Null

这是我的第一张表

INSERT INTO @EntityListL(RowID,EntityID,IdentifyingNumberL,IncludedL)
    SELECT ROW_NUMBER() OVER(ORDER BY d.EntityID DESC) AS Row, 
           d.EntityID,d.IdentifyingNumber,d.Included FROM @EntityList d 
    where d.Included = 0
    ORDER BY d.IdentifyingNumber

这是我的第二张表

    INSERT INTO @EntityListR(RowID,EntityID,IdentifyingNumberR,IncludedR)
    SELECT ROW_NUMBER() OVER(ORDER BY d.EntityID DESC) AS Row, 
           d.EntityID,d.IdentifyingNumber,d.Included FROM @EntityList d 
    where d.Included = 1
    ORDER BY d.IdentifyingNumber

我尝试使用下面的SQL语句

select A.IdentifyingNumber as IdentifyingNumberL, A.Included as IncludedL,
       B.IdentifyingNumber as IdentifyingNumberR, B.Included as IncludedR from
(
    select  ROW_NUMBER() OVER(ORDER BY IdentifyingNumber) AS Row,
            IdentifyingNumber, Included
    from @EntityList  where Included=0
) 
A
left outer join 
(
    select ROW_NUMBER() OVER(ORDER BY IdentifyingNumber) AS Row,
           IdentifyingNumber,Included from @EntityList  where Included=1
)B
 on A.Row=B.Row

请告诉我如何在SQL Server中实现。

先谢谢

Answer 1

这应该可以解决问题：

select a.IdentifyingNumber, a.Included, b.IdentifyingNumber, b.Included
from #A a
left outer join #B b on a.ID = b.ID

这是一个完整的测试：

create table #A (ID int, IdentifyingNumber int ,Included int)
create table #B (ID int, IdentifyingNumber int ,Included int)

insert into #A values (1, 101, 0)
insert into #A values (2, 102, 1)
insert into #A values (3, 103, 1)

insert into #B values (1, 201, 0)
insert into #B values (2, 202, 0)

select a.IdentifyingNumber, a.Included, b.IdentifyingNumber, b.Included
 from #A a left outer join #B b on a.ID = b.ID

结果：

IdentifyingNumber Included    IdentifyingNumber Included
----------------- ----------- ----------------- -----------
101               0           201               0
102               1           202               0
103               1           NULL              NULL

要将其放入新的临时表中，您需要区分列名：

SELECT a.IdentifyingNumber AS IdentifyingNumberA
    ,a.Included AS IncludedA
    ,b.IdentifyingNumber AS IdentifyingNumberB
    ,b.Included As IncludedB
INTO #C
FROM #A a
LEFT OUTER JOIN #B b ON a.ID = b.ID

Answer 2

使用此SQL ....

select A.IdentifyingNumber as IdentifyingNumberL, A.Included as IncludedL,
       B.IdentifyingNumber as IdentifyingNumberR, B.Included as IncludedR from
(
    select  ROW_NUMBER() OVER(ORDER BY IdentifyingNumber) AS Row,
            IdentifyingNumber, Included
    from @EntityList  where Included=0
) 
A
full outer join 
(
    select ROW_NUMBER() OVER(ORDER BY IdentifyingNumber) AS Row,
           IdentifyingNumber,Included from @EntityList  where Included=1
)B
 on A.Row=B.Row

该SQL在表中提供所有类型的记录。

如何在SQL Server虚拟表中追加/更新记录？

2 个答案: