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sql server reporting services
group:Null Parameter
sql server reporting services:
through report)? I've tried null, nothing, System.DBNull; none of these work. Thanks.
I have the same question. Did you ever find a solution Elmer?
[quoted text, click to view] "Elmer Miller" wrote:
> How do you pass a set a parameter null from an expression (i.e. drill > through report)? I've tried null, nothing, System.DBNull; none of these > work. > Thanks. > >
Since I posted my question, I discovered that System.DBNull.Value does work
as a null (but System.DBNull alone does not). This did not solve my problem, since null parameter value was not selected in my target report, but I am convinced that is the correct method for passing a null in an expression. Randy Howie [quoted text, click to view] "Elmer Miller" wrote:
> No I haven't solved this one yet. I'm using a lame hack to work around. Set > the parameter to a special value that is then hard-coded to be treated like > null in the stored procedure. I'm glad I'm not the only one with the > problem. I'm sure there is a simple fix. > > "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message > news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... > >I have the same question. Did you ever find a solution Elmer? > > > > "Elmer Miller" wrote: > > > >> How do you pass a set a parameter null from an expression (i.e. drill > >> through report)? I've tried null, nothing, System.DBNull; none of these > >> work. > >> Thanks. > >> > >> > >> > >
No I haven't solved this one yet. I'm using a lame hack to work around. Set
the parameter to a special value that is then hard-coded to be treated like null in the stored procedure. I'm glad I'm not the only one with the problem. I'm sure there is a simple fix. [quoted text, click to view] "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... >I have the same question. Did you ever find a solution Elmer? > > "Elmer Miller" wrote: > >> How do you pass a set a parameter null from an expression (i.e. drill >> through report)? I've tried null, nothing, System.DBNull; none of these >> work. >> Thanks. >> >> >>
Jeff,
I have seen that tip for passing a null via a URL, but I was referring to passing the parameter via a "jump to report" navigation expression (drillthrough). Randy Howie --------- [quoted text, click to view] "Jeff A. Stucker" wrote:
> In the URL: > > ¶mname:isnull=true > -- > Cheers, > > '(' Jeff A. Stucker > \ > > Business Intelligence > www.criadvantage.com > -------------------------------------- > "Elmer Miller" <millere@empireco.nospam> wrote in message > news:%230KVJyB%23EHA.2112@TK2MSFTNGP10.phx.gbl... > > No I haven't solved this one yet. I'm using a lame hack to work around. > > Set the parameter to a special value that is then hard-coded to be treated > > like null in the stored procedure. I'm glad I'm not the only one with the > > problem. I'm sure there is a simple fix. > > > > "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message > > news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... > >>I have the same question. Did you ever find a solution Elmer? > >> > >> "Elmer Miller" wrote: > >> > >>> How do you pass a set a parameter null from an expression (i.e. drill > >>> through report)? I've tried null, nothing, System.DBNull; none of these > >>> work. > >>> Thanks. > >>> > >>> > >>> > > > > > >
In the URL:
¶mname:isnull=true -- Cheers, '(' Jeff A. Stucker \ Business Intelligence www.criadvantage.com -------------------------------------- [quoted text, click to view] "Elmer Miller" <millere@empireco.nospam> wrote in message news:%230KVJyB%23EHA.2112@TK2MSFTNGP10.phx.gbl... > No I haven't solved this one yet. I'm using a lame hack to work around. > Set the parameter to a special value that is then hard-coded to be treated > like null in the stored procedure. I'm glad I'm not the only one with the > problem. I'm sure there is a simple fix. > > "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message > news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... >>I have the same question. Did you ever find a solution Elmer? >> >> "Elmer Miller" wrote: >> >>> How do you pass a set a parameter null from an expression (i.e. drill >>> through report)? I've tried null, nothing, System.DBNull; none of these >>> work. >>> Thanks. >>> >>> >>> > >
I have also tried the System.DBNull.Value, but it doesn't work because
DBNull is of a different type. My parameter is a Date type and the DBNull.Value causes an error: The value you provided for the report parameter 'service_date' is not valid for its type. It should be this easy, but in this case type-checking is hurting us. I've run into this situation before with Strong-typed datasets and in that case you need to set a separate propterties and methods to handle nulls (IsFieldNull() and SetFieldNull()). I'm sure there is something similar going on here. [quoted text, click to view] "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message news:EFCD8BB2-5DA9-43FC-970B-33B7E20CA426@microsoft.com... > Since I posted my question, I discovered that System.DBNull.Value does > work > as a null (but System.DBNull alone does not). > > This did not solve my problem, since null parameter value was not selected > in my target report, but I am convinced that is the correct method for > passing a null in an expression. > > Randy Howie > > "Elmer Miller" wrote: > >> No I haven't solved this one yet. I'm using a lame hack to work around. >> Set >> the parameter to a special value that is then hard-coded to be treated >> like >> null in the stored procedure. I'm glad I'm not the only one with the >> problem. I'm sure there is a simple fix. >> >> "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message >> news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... >> >I have the same question. Did you ever find a solution Elmer? >> > >> > "Elmer Miller" wrote: >> > >> >> How do you pass a set a parameter null from an expression (i.e. drill >> >> through report)? I've tried null, nothing, System.DBNull; none of >> >> these >> >> work. >> >> Thanks. >> >> >> >> >> >> >> >> >>
I found another workaround.
Instead of using 'Jump to report:' and setting parameters. Use 'Jump to URL' and build the correct URL string with the param:null=true in it. It will open up in a browser window (even when previewing) [quoted text, click to view] "Randy Howie" <RandyHowie@discussions.microsoft.com> wrote in message news:A94BBCDC-3021-4421-89A2-D791967765EE@microsoft.com... >I have the same question. Did you ever find a solution Elmer? > > "Elmer Miller" wrote: > >> How do you pass a set a parameter null from an expression (i.e. drill >> through report)? I've tried null, nothing, System.DBNull; none of these >> work. >> Thanks. >> >> >>
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