Im using adhoc calculated field ( db.hourlydata.TotalAsh / 
db.hourlydata.TotalMass ) in db().select() statement.

rows = db( db.hourlydata.DevId==1 ).select( db.hourlydata.DevId, 
db.hourlydata.TotalAsh / db.hourlydata.TotalMass )

Is it possible to define custom names for fields in db().select() statement 
?

If it is not possible, how can I access second field from previous example ?

tableData = [[ row.DevId, row.*whats_going_here?*] for row in rows ]

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