less { hop { filter_eq { all_rows ; channel ; rai 2 } ; launch date } ; hop { filter_eq { all_rows ; channel ; canale 5 } ; launch date } } = true
select the rows whose channel record fuzzily matches to rai 2 . take the launch date record of this row . select the rows whose channel record fuzzily matches to canale 5 . take the launch date record of this row . the first record is less than the second record .