eq { diff { hop { filter_eq { all_rows ; date ; november 25 } ; rank } ; hop { filter_eq { all_rows ; date ; november 18 } ; rank } } ; -1 } = true
select the rows whose date record fuzzily matches to november 25 . take the rank record of this row . select the rows whose date record fuzzily matches to november 18 . take the rank record of this row . the second record is 1 larger than the first record .