class Joke(db.Model):
url = db.TextProperty()
content = db.StringProperty(multiline=True)
keyword= db.StringListProperty();
i want to find entities whose content is not null.
there is 300 entities totally. the content of 4 entities are not null,the
content of 296 entities are null
i have tried the code following:
q = Joke.all()
q.filter('content !=', 'None')
*return 296 entities*
*q = db.GqlQuery("SELECT * FROM Joke where content!=null")*
*return 0 entities*
*
*
*q = db.GqlQuery("SELECT * FROM Joke where content=null")*
*return 296 entities*
*
*
*q = db.GqlQuery("SELECT * FROM Joke where content != null")*
*return 0 entities*
*
*
*
*
*sorry for poor english and any advice is appreciated.*
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