So why can't you do something like this... db.define_table('prop', Field('name','string'), Field('price','integer'), ) if not db(db.prop.id>0).count(): db.prop.insert(name="aaa", price=10) db.prop.insert(name="bbb", price=15) db.prop.insert(name="ccc", price=20)
db.define_table('prop_val', Field('prop_id','reference prop'), Field('val_date',length=8), Field('amount','integer'), ) if not db(db.prop_val.id>0).count(): db.prop_val.insert(prop_id=1, val_date="2016-01-01", amount=1) db.prop_val.insert(prop_id=1, val_date="2016-01-15", amount=15) db.prop_val.insert(prop_id=2, val_date="2016-01-01", amount=10) db.prop_val.insert(prop_id=2, val_date="2016-01-20", amount=6) db.prop_val.insert(prop_id=3, val_date="2016-01-01", amount=29) db.prop_val.insert(prop_id=3, val_date="2016-01-25", amount=25) maxdate = db.prop_val.val_date.max() maxval = db.prop_val.amount.max() rows = db(db.prop.id == db.prop_val.prop_id).select(db.prop.name,maxdate,maxval,groupby=db.prop.name) for r in rows: print r -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.