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LEFT JOIN FETCH over empty embedded collection returns no results

my original post: @Embeddable class A { String val; };   @Embeddable class B { List ... when I expect to JOIN FETCH through them? The query in your initial post is invalid: SELECT c FROM C
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Licensing

Hello! In some older post "support" wrote: "A single server license is for one activation of one machine and is non transferable.". What if one of our servers or laptops needs to get replaced? Do i ... license should also cover rented / leased server machines (under some terms). Following your post
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Modifying something with Explorer -> app JPQL with Enum doesn't work anymore

specified in the posting instructions. You should be able to reproduce almost every issue with a simple ... . We understand that it is easier for users that develop web application to post web applications as
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Object Relations Error after Schema Change

. Could you please check the database with the ObjectDB Doctor and post the output? In addition, you can try migrating ... file in a separate post. Regards.   The database looks healthy and nothing wrong was found in the 3
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ObjectDB 2 JDO Manual

JDO over JPA in your specific case? First, my apologies for the double post; I didn't see my first and thought for some reason it didn't get posted. (Didn't expect such a fast response either.) I
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ObjectDB Website and Yahoo Mail

The attached image represents the error I got yesterday when I posted my previous reply with "Phew. Thanks a lot..." I thought that you might want to see it. I couldn't upload it yesterday ... . Now it seems to work. I got all notifications for my latest post: http://www.objectdb.com/database
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OptimisticLockException

working perfectly.   However, as the OP posted, if they are using 'merge' that they require ... was concurrency, and as OP posted, they are mainly single threaded. dmoshal Willks
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Performance in large transactions

the posting instructions and use the single class format for examples and test cases ... separate posts.   Following is the revised test case from #4 above: import java.util.ArrayList
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possible index required for improving query performance

this index from an existing database? I've seen a post about Index Rebuilder on the forum that talks ... . You may upload the database and post the exact query details and this will be checked. Just remove
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Problem using Maven Repository - Enitiy Class will be ignored

.Entity that is mentioned in the warning in your post) may be already included in your Java EE ... classes but has to be used manually, as described in your post. I read nothing about this issue in