works perfect Niphlod,

1. is underscore var name preferable to camel case in w2py?

2. is there any difference between .select and ._select? (in my data, works 
the same)

working code example:

doNotDisplayThisPersonQuery = db(( db.auth_user.id == db.BlockedConnection.
blockingPerson) & (db.BlockedConnection.blockedPerson == auth.user_id)).
select(db.auth_user.id)

grid = SQLFORM.grid(~db.auth_user.id.belongs(doNotDisplayThisPersonQuery
).....

the "._select(db.auth_user.id)" filled a big gap in my understanding

much appreciated!

Alex







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