Also does it use the keyword histogram to optimize the set- intersection performance(AND queries) in merge-join?
Regards, Jai On Sep 1, 12:07 pm, Devel63 <[email protected]> wrote: > I'm seeing very slow times on some merge-join (zig zag) queries, and > just want to confirm that App Engine is smart about these things. > > In particular, if I have a poperty for which most records have an > identical value, does GAE does have to scan the related entire index > linearly, or, if I'm in the middle of a merge join, does it > intelligently find a good starting point based on the desired __key__ > value? > > Imagine 1M records with a db.BooleanProperty set to False... --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
