[mapguide-users] Join Problem

Zac Spitzer zac.spitzer at gmail.com
Thu Apr 22 22:46:36 EDT 2010

can you describe which FDO providers you are using and data behind?

joins are a known to be a wee bit problematic..

if possible, doing the join in a view in the database and using that
will give you much better (reliable) results

On 23 April 2010 06:17, _Jon_ <jrizzo at langan.com> wrote:
> My migration saga continues.  I just migrated my site from 1.1 to 2.1.  I was
> able to migrate the data by exporting a package from 1.1 and loading it in
> 2.1.  While everything appears to have come over, some things are just not
> right.  I noticed that a join which was previously working properly (as a
> left outer join) is now operating as an inner join.  I opened up the feature
> source where the join was defined but the join appeared to be defined
> correctly.  Even though I did not make any changes, I tried saving the
> feature source but Studio wouldn't let me.  It gave the error: "Length
> cannot be less than zero.  Parameter name: length".  I changed a few
> settings and then changed them back, wondering what would happen.  It kept
> giving that error when I saved and eventually Studio crashed, throwing the
> same error as an unhandled exception.  When I went back in, I re-created the
> feature source & join.  It let me save the new feature source anywhere
> except in it's original (correct) location.  It kept giving me that error.
> So, I tried renaming the old f.s. and moving the new one into its place.
> Now, Studio crashes whenever I try to move this f.s. into place.  I tried
> deleting all layers that reference this f.s. but it did not fix the problem.
> I'm not quite sure what i can do next.  Help? (!)
> Jon
> --
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Zac Spitzer
Solution Architect / Director
Ennoble Consultancy Australia
+61 405 847 168

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