小编sal*_*lim的帖子

我有这个功能,我想创建.当我解析它时,它工作正常,但实际上在数据库中创建函数它说我的列名无效.事实并非如此,我拼写正确.这是代码:

ALTER FUNCTION [dbo].[fnTally] (@SchoolId nvarchar(50))
RETURNS int

AS 

BEGIN 

DECLARE @Final nvarchar
IF EXISTS (

    SELECT 
        question, 
        yes_ans, 
        no_ans, 
        na_ans, 
        blank_ans 
    FROM dbo.qrc_maintally 
    WHERE school_id = @SchoolId 

)

    IF yes_ans > no_ans AND yes_ans > na_ans 
    BEGIN
        SET @Final = 'Yes'
    END

    ELSE IF no_ans > yes_ans AND no_ans > na_ans 
    BEGIN
        SET @Final = 'No'
    END

    ELSE IF na_ans > yes_ans AND na_ans > no_ans 
    BEGIN
        SET @Final = 'N/A'
    END

RETURN @Final

END