Question

如何将cte的结果插入表变量

这样的东西？

DECLARE
       @myData TABLE( 
                        Title nvarchar(350) NOT NULL , 
                        Id int NOT NULL ,
                    );
INSERT INTO @myData

with CTE as 
    (SELECT       
      a.Title 
     ,a.Id
  FROM
       TableA
     )
    ,CTE2 as 
    (SELECT  
      b.Title
     ,b.Id   
  FROM
       TableB
    )

    Select * From CTE

    union all

    Select * From CTE2

    Select  ROW_NUMBER() OVER(ORDER BY GetDate() DESC) AS RowId
       , x.* 
       From @myData x
       order by x.Id desc

Answer 1

试试这个

with CTE as 
    (SELECT       
      a.Title 
     ,a.Id
  FROM
       TableA
     )
    ,CTE2 as 
    (SELECT  
      b.Title
     ,b.Id   
  FROM
       TableB
    )
    INSERT INTO @myData  --- insert statement goes here after CTE

    Select * From CTE    
    union all    
    Select * From CTE2

    Select  ROW_NUMBER() OVER(ORDER BY GetDate() DESC) AS RowId, x.* 
    From @myData x
    order by x.Id desc

Answer 2

在我的SQL2019版本中，以上构造不插入任何字段。更糟糕的是，如果我想在语句后使用UPDATE，则会出现语法错误。

相反，此构造还可以在存储过程中工作：

; WITH CTE AS (
  select ...
  UNION ALL
  select ...
)
insert into @tableVariable(fields..) (select field... from CTE)

希望有人会使用它。

插入表变量CTE

2 个答案: