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select count(seats_count2) as rows_count, sum(seats_count2) as seats_count from (select count(seat_num) as seats_count2 from (select left(seat_no,-1) as seat_num,substring(seat_no from '.$') as seat_char from seats where aircraft_code= (select aircraft_code from aircrafts_data where model->>'en'='Boeing 777-300')) sq group by seat_num) sq2

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