Hello Jaap, Sounds like this problem is not all that rare, although we have never hit it before in over a year of development on the app engine.
I can't relate the problem to anything we have done recently. I don't think we have introduced any new indexes for a while for example. I take it Google have not come up with any explanation in your case so far either? On Aug 5, 11:18 pm, Jaap Taal <[email protected]> wrote: > Same here, just good old ASCII chars in that record. > > > > On Wed, Aug 5, 2009 at 12:55 AM, phtq <[email protected]> wrote: > > > 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. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
