在您发布时,您的前两个元素之间缺少逗号
SELECT:
select @Advance_payment = [advance_payment] @Balance = [Balance], ^^^^ | here there should be a comma!
因此,请尝试以下操作:
select @Advance_payment = [advance_payment], @Balance = [Balance], ..... (rest of your statement) ....

在您发布时,您的前两个元素之间缺少逗号
SELECT:
select @Advance_payment = [advance_payment] @Balance = [Balance], ^^^^ | here there should be a comma!
因此,请尝试以下操作:
select @Advance_payment = [advance_payment], @Balance = [Balance], ..... (rest of your statement) ....