Thats right unfortunately. Like Jeff said, that is what a RDBMS is
probably doing anyway but it does locally and returns only results
over the wire back to you.
But with Twigs parallel commands no matter how many queries you need
to run, they will not take extra time. You could query on 100
criteria and join them in your app code for not a significant increase
in response time.
John
On 16 Mar 2010, at 13:08, Max wrote:
to query with n filters on one relation index entity
*should be*
to query with n filters on User with many UserSkill entity children
On Mar 16, 2:05 pm, Max <[email protected]> wrote:
Hi John,
Thanks for your reply. To be honest I am quite disappointed that GAE
can not perform such query directly.
According do your suggestion, to query with n filters on one relation
index entity, we need to:
1, perform n separate queries to obtain n cursors of UserSkill
entities by some sorting order
2, use in-memory zig-zag method to obtain User keys match all query
3, use a batch get to obtain all User entities
Please correct me if my understanding is wrong.
Best regards,
Max
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