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Question: Mysql Database assignment Help
1. Which destination in the flight's database is the furthest distance away, based on information in the flight's table. Show the SQL query(s) that support your conclusion.
Query - SELECT DISTINCT carrier, flight, origin, dest, distance FROM flights WHERE distance = (SELECT MAX(distance) FROM flights);
Output - ‘HA','51','JFK','HNL','4983'
Therefore, the furthest distance destination is HNL which is Honolulu International airport.
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2. What are the different numbers of engines in the planes table? For each number of engines, which aircraft have the most number of seats? Show the SQL statement(s) that support your result.
Query - SELECT engine FROM planes GROUP BY engine;
Output -
4 Cycle
Reciprocating
Turbo-fan
Turbo-jet
Turbo-prop
Turbo-shaft
Therefore, there are 6 different numbers of engines in the plane table
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = 'Turbo-fan' AND seats = (SELECT MAX(seats) FROM planes WHERE engine = 'Turbo-fan');
Output - ‘777-222’,'400' , ’777-224,'400'
Therefore, aircraft 777-222 and 777-224 has the most number of seats i.e. 400 for engine Turbo-fan.
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = 'Turbo-jet' AND seats = (SELECT max(seats) FROM planes WHERE engine = 'Turbo-jet');
Output - ‘747-451’,'450'
Therefore, aircraft 747-451 has the most number of seats i.e. 450 for engine Turbo-jet.
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = 'Turbo-prop' AND seats = (SELECT max(seats) FROM planes WHERE engine = 'Turbo-prop');
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Place Your OrderOutput - ‘E-90','10'
Therefore, aircraft E-90 has the most number of seats i.e. 10 for engine Turbo-prop.
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = 'Turbo-shaft' AND seats = (SELECT max(seats) FROM planes WHERE engine = 'Turbo-shaft');
Output - ’S-76A','14'
Therefore, aircraft S-76A has the most number of seats i.e. 14 for engine Turbo-shaft.
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = 'Reciprocating' AND seats = (SELECT max(seats) FROM planes WHERE engine = 'Reciprocating');
Output - ‘DC-7BF','102'
Therefore, aircraft DC-7BF has the most number of seats i.e. 102 for engine Reciprocating.
Query - SELECT DISTINCT model, seats FROM planes WHERE engine = '4 Cycle' AND seats = (SELECT max(seats) FROM planes WHERE engine = '4 Cycle');
Output - ‘172M’,'4'
Therefore, aircraft 172M has the most number of seats i.e. 4 for engine 4- Cycle.
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