I have an index serving like the following:

FoodCategory
isMainCategory ▲ , name ▲       Serving

And I have the following query:
select from FoodCategory where isMainCategory=true order by name

However i always get:
com.google.appengine.api.datastore.DatastoreNeedIndexException: no
matching index found..

Why is that?

another question is, i don't know why the auto index file created 2
indexes one for FoodCategory and another for the same but all upper
case FOODCATEGORY

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