ok, let see this table structure in Datastore:
Structure Table StructureNo StructureName 1 Structure1 2 Structure2 Line Table LineNo LineName StructureNo 1 Line1 1 2 Line2 1 3 Line3 2 Let say we want to show all the Lines with their structures as the following: LineNo LineName StructureNo StructureName 1 Line1 1 Structurre1 2 Line2 1 Structurre1 3 Line3 2 Structurre2 Google said that we can't do the Join, then what is the professional way to get data? So, we first filter all lines in Line Table //put StructureNo into a structureNoList<Integer> //then filter all structures in Structure Table that have structureNo in the structureNoList<Integer> //then assemble line and structure data via Java list *Is this a right way to get data that is joined via many different tables in Datastore?* -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/d192a741-640b-4206-97c0-839bebf1561b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
