在存储过程中处理多个返回值

Question

我有以下存储过程

ALTER PROC spInParam
(
    @partyCode NVARCHAR(50)
)
AS
BEGIN
DECLARE @totalAmount float
DECLARE @setLoop int
DECLARE @setCNT int
print 'Party Code '+@partyCode;
set @totalAmount=(select TotalAmount from BillParticular where partyCode=@partyCode)
set @setLoop=(select count(TotalAmount) from BillParticular where partyCode=@partyCode)
SET @setCNT=0;
WHILE @setCNT<=@setLoop
BEGIN
print 'Total Bill Amt.'+CONVERT(nvarchar(50),@totalAmount);
set @setCNT=@setCNT+1;
END
return CONVERT(NVARCHAR(50),@totalAmount)
END

在这个存储过程中，

select TotalAmount from BillParticular where partyCode=@partyCode 此查询返回多个值。 （即特定的@partyCode 有两个 TotalAmounts）我怎样才能把它们循环起来？

我为此设置了while循环，如代码所示。

这个存储过程编译得很好。但是在执行时，它给了我以下错误：

Party Code 0L036
Msg 512, Level 16, State 1, Procedure spInParam, Line 11
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

请指导我在现有程序中应该做什么。

如果我在任何地方犯了错误，请告诉我。

请帮帮我。

样本输出：

Party Code: 0L036
Total Bill Amount:1074432000
Total Bill Amount:2108208000

账单明细表：

编辑：

DECLARE @partyCode nvarchar(50);
WITH records
AS
(
    SELECT  'Total Bill Amount : ' + CONVERT(nvarchar(50), TotalAmount) str_output
    FROM    BillParticular 
    WHERE   PartyCode = @partyCode
)
SELECT  'Party Code ' + @partyCode str_output
UNION ALL
SELECT  str_output FROM records

返回NULL

Answer 1

WITH records
AS
(
    SELECT  'Total Bill Amount : ' + CONVERT(nvarchar(50), TotalAmount) str_output
    FROM    BillParticular 
    WHERE   PartyCode = @partyCode
)
SELECT  'Party Code ' + @partyCode str_output
UNION ALL
SELECT  str_output FROM records