[web2py] registration key?

[maneesh2611]

What are the registration key and registration identifier fields in auth 
user sign up table?
I'm new to web2py, so I apologize if the question looks silly.

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[web2py] Registration key

[Paco Bernal]

Hi all

Today my mind is a little heavy but can't wait till tomorrow

Why 

db((db.auth_user.registration_key=='')|(db.auth_user.registration_key==None)).count()
>

gives me 2 and 

db(db.auth_user.registration_key!='blocked').count()
>

gives me 1 when I use only 'blocked' to block users?

Thanks for the support


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[web2py] Registration key

[Val K]

Because null (none) has special meaning in sql and can't be compared, so you 
should use explicit comparison with null (none)

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