SQL Server:从两个表中选择并插入一个表中

问题描述：

我有一个带有两个表变量(@temp和@ temp2)的存储过程.

I have a stored procedure with two table variables (@temp and @temp2).

如何从两个临时表中选择值(两个表变量都包含一行)并将它们全部插入一个表中?

How can I select the values from both temp tables (Both table variables contain one row) and insert them all in one table ?

我尝试了以下操作，但此操作不起作用，并且出现错误，提示SELECT和INSERT语句的数量不匹配.

I tried the following but this didn't work and I got the error that the number of SELECT and INSERT statements does not match.

DECLARE @temp AS TABLE
    (
        colA datetime,
        colB nvarchar(1000),
        colC varchar(50)
    )
DECLARE @temp2 AS TABLE
    (
        colD int
    )

...

INSERT INTO MyTable
    (
        col1,
        col2,
        col3,
        col4
    )
SELECT  colD FROM @temp2,
        colA FROM @temp,
        colB FROM @temp,
        colC FROM @temp

非常感谢蒂姆的帮助.

答

由于两个表变量都只有一行，因此您可以交叉联接它们.

As both table variables have a single row you can cross join them.

INSERT INTO MyTable
            (col1,
             col2,
             col3,
             col4)
SELECT t.colA,
       t.colB,
       t.colC,
       t2.colD
FROM   @temp t
       CROSS JOIN @temp2 t2

SQL Server:从两个表中选择并插入一个表中

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