Question

我正在尝试创建一个允许将变量用作表名的过程。

示例：

Select Temp1, Temp2 
From @var

@var具有正确的表名，但每次迭代都会通过while循环进行更改。

-- Above sets up all Variables
WHILE @Count >= @I
BEGIN 
SET @ObjectID = (SELECT ObjectID FROM @TmpTable WHERE ID = @I)
SET @TableName = (SELECT TableName FROM @TmpTable WHERE ID = @I)
IF @I = 8
BEGIN

        SELECT * 
        INTO ##TMPTable
        FROM @TableName
        -- Additional Processing
END
END

Answer 1

DECLARE   
   @SQLString varchar(max),  
   @TempTableName varchar(100)  

SET @TempTableName = '##TMPTable' + cast( @@spid AS varchar(5))  

WHILE @Count >= @I
BEGIN 
SET @ObjectID = (SELECT ObjectID FROM @TmpTable WHERE ID = @I)
SET @TableName = (SELECT TableName FROM @TmpTable WHERE ID = @I)
IF @I = 8
BEGIN

        set @SQLString = '
        SELECT * 
        INTO ' + @TempTableName + '
        FROM ' + @TableName

        EXECUTE ( @SQLString )  

        EXECUTE ( 'SELECT * from ' + @TempTableName)  

        -- Additional Processing
END
END

如何在SQL语句From Line中使用变量

1 个答案: