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RIT Dep. Department of Information Sciences and Technologies Com 12. What equipment has never been used on a trip? | equipid
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Answer #1

12.

SELECT EquipID, EquipmentName FROM equipment WHERE EquipID NOT IN (SELECT EquipId FRO trip);

13.

SELECT tc.TypeName, count(distinct td.TripNum) AS NumTrips FROM trip_directory td JOIN tripcodes tc on tc.TripType = td.TripType;

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