[web2py] comparing two database tables

[praveen krishna]

Hii,
 I have two tables 
db.define_table('plugin_seq',
                Field('filename',readable=False,writable=False),
                Field('raw_seq','text'),
                Field('processed_seq', 'text'),
                Field('reverse_seq','text')
             
                )
db.define_table('primer_seq',Field('filename',readable=False,writable=False),
                Field('raw_seq','text'),
                Field('processed_seq', 'text'),
                )



I want to compare the processed_seq field in the two tables what can be 
possible approach I have tried by creating two forms for each table but its 
not working.

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