Google app engine: empty property in datastore

Posted by Pete on Stack Overflow See other posts from Stack Overflow or by Pete
Published on 2010-05-16T05:11:06Z Indexed on 2010/05/16 5:20 UTC
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Dear All,

Let say I have a model:

class A(db.Model):
    B = db.StringProperty()
    C = db.StringProperty()

How do I query if I wanted to search all empty property (not None, just empty) in C using python?

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