Dynamic database with MS ACCESS

Hi,
I am using ASP.NET to display reports using the report viewer object.
I have multiple MS Access databases that can be used as the datasource to a
report.
I know how to make a connection to multiple different SQL databases passing
the database as a parameter in the URL of my query and then into my stored
procs, but the same technique cannot be applied to MS Access databases.
I figured out that the parameter to be passed must be the *.mdb file path on
the server... but where to use it?
ThxI have a huge query for as one of my datasets, something like this (this
query works well) :
SELECT tabl1.*, ..., tablx.*
FROM tabl1, ... tablx
IN 'c:\db1.mdb'
ORDER BY tabl1.x
I tried the following :
SELECT tabl1.*, ..., tablx.*
FROM tabl1, ... tablx
IN @.DBPath
ORDER BY tabl1.x
But apparently u can't use a named parameter with OLE DB ... so I tried this :
SELECT tabl1.*, ..., tablx.*
FROM tabl1, ... tablx
IN ?
ORDER BY tabl1.x
But when I execute the query and am asked what value should ? take, whatever
the value i enter it doesnt work. I tried 'c:\db1.mdb', c:\db1.mdb, and
[c:\db1.mdb]
Nothing works. I also don't know how to map the ? variable to a @.Parameter,
because the ? doesn't generate a parameter in the parameter tab ...
AAAaaaarggg!|||You are right about using unnamed parameters. First, are you in the generic
query designer (2 panes). You will want to be there (button is to the right
of the ...). Next, if a parameter is not created automatically for you then
go to the form design, menu report->report parameters and add a parameter.
Then go back to the data tab, click on the ..., go to the parameters tab and
then put in the ? on the left and select your parameter on the right.
My guess is that you cannot just have a parameter in your query where it is
not part of the where clause (which in this case is not). However, you can
still do this. Use an expression which would look like this:
= "SELECT tabl1.*, ..., tablx.* FROM tabl1, ... tablx IN '" &
Parameters!Paramname.Value & "' ORDER BY tabl1.x"
I sometimes create a report with no datasource, just my parameters and a
textbox. I set the textbox to the expression so I can see what I have
created so I know if it is correct before I set the dataset to this value.
Bruce Loehle-Conger
MVP SQL Server Reporting Services
"Eric" <Eric@.discussions.microsoft.com> wrote in message
news:6024F625-1721-4212-AB86-B8C131A12CE2@.microsoft.com...
>I have a huge query for as one of my datasets, something like this (this
> query works well) :
> SELECT tabl1.*, ..., tablx.*
> FROM tabl1, ... tablx
> IN 'c:\db1.mdb'
> ORDER BY tabl1.x
> I tried the following :
> SELECT tabl1.*, ..., tablx.*
> FROM tabl1, ... tablx
> IN @.DBPath
> ORDER BY tabl1.x
> But apparently u can't use a named parameter with OLE DB ... so I tried
> this :
> SELECT tabl1.*, ..., tablx.*
> FROM tabl1, ... tablx
> IN ?
> ORDER BY tabl1.x
> But when I execute the query and am asked what value should ? take,
> whatever
> the value i enter it doesnt work. I tried 'c:\db1.mdb', c:\db1.mdb, and
> [c:\db1.mdb]
> Nothing works. I also don't know how to map the ? variable to a
> @.Parameter,
> because the ? doesn't generate a parameter in the parameter tab ...
> AAAaaaarggg!
>