Did you enable auto index in datastore-indexes.xml and generated datastore-indexes-auto.xml is correct?
On Dec 1, 6:33 pm, Eric Rannaud <[email protected]> wrote: > On Tue, Dec 1, 2009 at 3:21 PM, yejun <[email protected]> wrote: > >> id is not the primary key of MessageS, but a 'long' field, _unique_ in > >> each entity (so it maps 1-to-1 with the entities). Note: such a query > >> doesn't require a specific index. > > > Why "such a query doesn't require a specific index"? > > I mean, according to the documentation, you can execute such a query > without building an index for it, as App Engine provides automatic > indexes in such a case. > > "App Engine provides automatic indexes for the following forms of queries: > - queries using only equality and ancestor filters > - queries using only inequality filters (which can only be of a > single property) > - queries with no filters and only one sort order on a property, > either ascending or descending > - queries using equality filters on properties and inequality or > range filters on keys" > > My query is of the second type. > > > There's no such thing as unique constraint on google data store. > > I don't understand what you mean. This is related to issue #178 http://code.google.com/p/googleappengine/issues/detail?id=178 -- 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.
