Passing Null To Stored Procedure In Reporting Services

Jun 27, 2007

Hello,



I have a report. I need to make a drop-down parameter optional. I've setup the parameter to use a dataset as its source, and I need to allow the value to be null. I've selected allow nulls check box, and I've even tried setting the default value to System.DBNull.Value. But, when the entry is not selected (blank), no data ever comes back. If the data is blank or null, my procedure works (I've tested it). How do I send a null value to the database through reporting services report? I was hoping to avoid creating a special query just for that purpose.



Thanks.

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Hi


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Thanks
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Hi all,

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Hi,

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(
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)
AS
BEGIN
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TITLE: Microsoft SQL Server Report Designer
------------------------------

An error occurred while executing the query.
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ADDITIONAL INFORMATION:

ERROR [HY000] [ODBC Firebird Driver][Firebird]Dynamic SQL Error
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------------------------------
BUTTONS:
OK
------------------------------

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Below is the sp.
--------------------------------------------------------------------

create proc [dbo].[p_national_by_week]

as

set nocount on



declare @s1 nvarchar(2000), @parmdefinition nvarchar(300), @rangestart smalldatetime, @rangeend smalldatetime

, @price_low money, @price_high money, @weekdate smalldatetime


declare c1 cursor for

--- GG change for reg dates.

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open c1

fetch from c1 into @weekdate



while @@fetch_status =0

begin

select @rangeend = @weekdate+7, @rangestart=@weekdate

select @s1 = N'

declare @mlsid_count int, @avg_price money, @avg_day_on_market int, @median_price money, @c1 int

select @mlsid_count=count(*), @avg_price=avg(CurrentPricefilter),

@avg_day_on_market=avg(datediff(dd, FirstListedDate, LastModifiedDate))

from vtRealEstate_RealtorListings

where ((FirstListedDate <= @rangeStart and LastModifiedDate >= @rangeStart) or

(FirstListedDate >= @rangeStart and FirstListedDate < @rangeEnd)

)

and currentpricefilter is not null

and mlsidfilter is not null

select @c1=@mlsid_count/2

set rowcount @c1

select @median_price = CurrentPricefilter from vtRealEstate_RealtorListings

where

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)

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, @weekdate = @weekdate
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end

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, mlsid_count

, avg_price

, median_price

, avg_day_on_market

from report_detail_test

order by WeekDate

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Query execution failed for data set €˜data'

Must declare the scalar variable '@parameter'



Some info...



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Looking through the online books it says...



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