IF(@ID = '')
BEGIN
    SET @ID = NULL;
END

IF(@Name = '')
BEGIN
    SET @Name = NULL;
END

IF(@PhoneNumber = '')
BEGIN
    SET @PhoneNumber = NULL;     
END

IF(@Price = '')
BEGIN
    SET @Price = NULL;
END

IF(@NewPrice = '')
BEGIN
    SET @NewPrice = NULL;
END

IF(@ModelNumber = '')
BEGIN
    SET @ModelNumber = NULL;
END

IF(@SKU = '')
BEGIN
    SET @SKU = NULL;
END

我正在寻找IsEmpty函数,如ISNULL.所以我可以,

ISEMPTY(@SKU,NULL)

这在sql中是否可行.