Hello Forum,

Please help me in getting the equivalent DAL query for the following SQL 
query. I intend to pass this on to SQLFORM.grid

Select * from db.pc where db.pc.id not in (select unique 
db.assigned.computer from db.assigned)

Web2Py Version
2.9.12-stable+timestamp.2015.02.15.23.04.25
(Running on Rocket 1.2.6, Python 2.7.9) 

db.define_table('staff',
                Field('name', 'string', unique=True),
               format='%(name)s')

db.define_table('pc',
                Field('csi', 'string', unique=True),
               format='%(csi)s')

db.define_table('assigned',
                Field('staff', db.staff),
                Field('computer', db.pc))

Thanks,
PT

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