tsql将列合并到一个表

Question

如何将列合并到一个表中？

 
declare @map_old table(ID int not null) 
insert into @map_old select 1 
insert into @map_old select 2 

declare @map_new table(ID int not null) 
insert into @map_new select 11 
insert into @map_new select 22 

declare @map(ID int not null, ID2 int not null) 

的结果@map应该是：

 
ID ID2 
1 11 
2 22 

有什么建议？谢谢！

Answer 1

，你可以在表中使用的身份类似如下：

declare @map_old table(iden int identity,ID int not null) 
insert into @map_old select 1 
insert into @map_old select 2 

declare @map_new table(iden int identity,ID int not null) 
insert into @map_new select 11 
insert into @map_new select 22 

declare @map table(ID int not null, ID2 int not null) 

insert into @map 
select t.ID, t2.ID from @map_old t join @map_new t2 on t.iden = t2.iden 

Answer 2

如果您确信此表将包含的行相同的金额。

那么，也许是这样的：

;WITH CTE 
AS 
(
    SELECT 
     ROW_NUMBER() OVER(ORDER BY ID) AS RowNbr, 
     mapNew.ID 
    FROM 
     @map_new AS mapNew 
),CTE2 
AS 
(
    SELECT 
     ROW_NUMBER() OVER(ORDER BY ID) AS RowNbr, 
     mapOld.ID 
    FROM 
     @map_old AS mapOld 
) 
INSERT INTO @map(ID,ID2) 
SELECT 
    CTE.ID, 
    CTE2.ID 
FROM 
    CTE 
    JOIN CTE2 
     ON CTE.RowNbr=CTE2.RowNbr 

SELECT * FROM @map