Introduction to SQL
Find the name of all cities with their temperature, humidity and countries.

SELECT weather.city, temperature, humidity, country FROM weather, location WHERE weather.city = location.city;
SELECT weather.city, temperature, humidity FROM weather SELECT country FROM location WHERE weather.city = location.city;
SELECT weather.city, temperature, humidity, country FROM weather, location;
SELECT city, temperature, humidity, country FROM location;

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Introduction to SQL
Which of the following query finds the names of the sailors who have reserved at least one boat?

SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
None of These
SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid;

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Introduction to SQL
Find all the cities with temperature, condition and humidity whose humidity is in the range of 63 to 79

SELECT * FROM weather WHERE humidity IN (63 to 79)
SELECT * FROM weather WHERE humidity BETWEEN 63 AND 79
SELECT * FROM weather WHERE humidity NOT IN (63 AND 79)
SELECT * FROM weather WHERE humidity NOT BETWEEN 63 AND 79

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Introduction to SQL
What does the following query find?(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'red')MINUS(SELECT DISTINCT r.sidFROM boats b, reserves rWHERE b.bid = r.bidAND b.color = 'green')

Find the sailor Ids of atmost one sailor who have reserved red boats but not green boats
Find the sailor IDs of all sailors who have reserved red boats but not green boats
None of These
Find the sailor IDs of at least one sailor who have reserved red boats but not green boats

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