Question

我在SQL Server 2008 R2中创建了一个返回varchar（4000）的标量函数。此varchar（4000）是连接表的多个行和多个列的结果。我将在报告的选择源中使用此功能。详细信息是具有特定销售数量和价格的产品。

使用select功能时会出现问题。结果被截断。他要返回13行，只返回5。如果我在sql management studio函数内使用print命令返回 13行。

如何使函数返回正确的数字行？

print dbo.fnReturnProducts ('{25899A98-5E68-E641-8C9D-7F341F17F2EF}')  -- returns 13 lines
select dbo.fnReturnProducts ('{25899A98-5E68-E641-8C9D-7F341F17F2EF}') -- returns 5 lines

alter function [dbo].[fnReturnProducts](@OrderId uniqueidentifier) returns varchar(4000)
begin 

declare @Products as varchar(4000)
declare @ProductName as varchar(43)
declare @ProductOrder as varchar(3)
declare @Quantity varchar(30)
declare @UnitPrice varchar(30)
declare @TotalPrice varchar(30)

select @Products = ''

DECLARE aux_cursor CURSOR FOR 
select
    ProductName as ProductName,
    dbo.FormatNumber (ProductOrder, 0, '(', 0) as ProductOrder,
    dbo.FormatNumber (Quantity, 2, '', 0) as Quantity,
    dbo.FormatNumber (UnitPrice , 2, '$', 0) as UnitPrice,
    dbo.FormatNumber (Quantity * UnitPrice, 2, '$', 0) as TotalPrice    
from    vwOrderDetails
Where OrderId = @OrderId
order BY vwOrderDetails.ProductOrder


OPEN aux_cursor
FETCH NEXT FROM aux_cursor 
INTO 
    @ProductName,
    @ProductOrder,
    @Quantity,
    @UnitPrice,
    @TotalPrice


WHILE @@FETCH_STATUS = 0
BEGIN
    if len(@Products) > 0 
    begin
        select @Products = @Products + char(10)
    end 
    select @Products = @Products +  '(' + @ProductOrder + ') ' + @Quantity + ' - ' + @ProductName  + ' a ' + @UnitPrice + ' = ' + @TotalPrice

   FETCH NEXT FROM aux_cursor 
   INTO 
    @ProductName,
    @ProductOrder,
    @Quantity,
    @UnitPrice,
    @TotalPrice

END

CLOSE aux_cursor
DEALLOCATE aux_cursor

RETURN @Products

end


go

Answer 1

试试这个：

select dbo.fnReturnProducts ('{25899A98-5E68-E641-8C9D-7F341F17F2EF}')  into #tablename
select * from #tablename

Answer 2

这不是答案，而是来自SSMS（和应用程序）的结果。查看区别：仅打印和选择命令。在应用程序内部我使用select（我的问题）。

print dbo.fnReturnProducts ('{25899A98-5E68-E641-8C9D-7F341F17F2EF}')  -- returns 13 lines

(1) 1.00 - MAC INST PARATI GAL/CAIPIRA 85GR            a $.75 = $.75
(2) 1.00 - MAC INST PARATI CAR/LEG.85GR                a $.75 = $.75
(3) 1.00 - MAC INST PARATI GAL/CAIPIRA 85GR            a $.75 = $.75
(4) 1.00 - TRINK TANGERINA 35GR                        a $.69 = $.69
(5) 1.00 - TRINK TANGERINA 35GR                        a $.69 = $.69
(6) 1.00 - MAC ORSI BAM.OVOS PARAFUSO 500GR            a $1.56 = $1.56
(7) 1.00 - MAC INST PARATI CAR/LEG.85GR                a $.75 = $.75
(8) 1.00 - ORSI ACHOC PO 400GR                         a $2.16 = $2.16
(9) 1.00 - ORSI ACHOC PO 400GR                         a $2.16 = $2.16
(10) 1.00 - BISC.PANCO ROSQ NATA 500G                   a $3.53 = $3.53
(11) 1.00 - ST PROTEX ERVA DOCE 90GR                    a $1.76 = $1.76
(12) 1.00 - OLEO SOJA CORCOVADO 900ML               UN  a $3.59 = $3.59
(13) 1.00 - OLEO SOJA CORCOVADO 900ML               UN  a $3.59 = $3.59

select dbo.fnReturnProducts ('{25899A98-5E68-E641-8C9D-7F341F17F2EF}') -- returns 5 lines

(1) 1.00 - MAC INST PARATI GAL/CAIPIRA 85GR            a $.75 = $.75
(2) 1.00 - MAC INST PARATI CAR/LEG.85GR                a $.75 = $.75
(3) 1.00 - MAC INST PARATI GAL/CAIPIRA 85GR            a $.75 = $.75
(4) 1.00 - TRINK TANGERINA 35GR

SQL Server标量函数返回VARCHAR截断

2 个答案: