The fact that the record can be retrieved with any 2 of the 3 filters
indicates that there are no hidden characters.

On Aug 5, 8:41 am, Wooble <[email protected]> wrote:
> Are you sure there isn't a space or other non-printable character in
> your data in the datastore?  It's certainly possible your index is
> corrupt, but I'd check for more likely causes first.
>
> On Aug 4, 12:01 am, phtq <[email protected]> wrote:
>
>
>
> > In our application (kbdlessons version 1-01) we have just had a case
> > where a query in our application failed to return a record which
> > definitely exists. We were able to reproduce this problem using the
> > Dataviewer page off the app engine dashboard.
>
> > We put in this query using the Dataviewer:
>
> > SELECT * FROM StudentSubscriptions where StudentKey = 'REBECCA' and
> > ProductKey = 'Typequick Professional' and AccountKey = 'SIVF'
>
> > and got no results. However, if we use just 2 out of the 3 tests (any
> > 2!) the record we want appears amongst the results.
>
> > Also, other valid values for StudentKey when used in this 3 part query
> > do return a record in the Dataviewer page, just not this particular
> > set of 3 values.
>
> > We had to build a new record (under another name) to get the student
> > going, but have left the troubled record in the database so you can
> > look at it.
>
> > Please let me know how to avoid this rather worrying problem.
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