Introduction to SQL
A subquery in an SQL SELECT statement is enclosed in:

parenthesis -- (...) .
CAPITAL LETTERS.
braces -- {...}.
brackets -- [...].

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Introduction to SQL
Find the name of those cities with temperature and condition whose condition is either sunny or cloudy but temperature must be greater than 70oF.

SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' OR temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' AND temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' AND temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' OR temperature > 70;

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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')

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

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