Introduction to SQL
Find all the tuples having temperature greater than 'Paris'.

SELECT * FROM weather WHERE temperature > 'Paris' temperature
SELECT * FROM weather WHERE temperature > (SELECT * FROM weather WHERE city = 'Paris')
SELECT * FROM weather WHERE temperature > (SELECT city FROM weather WHERE city = 'Paris')
SELECT * FROM weather WHERE temperature > (SELECT temperature FROM weather WHERE city = 'Paris')

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Introduction to SQL
Find the names of the countries whose condition is sunny.

SELECT country FROM location WHERE city NOT IN (SELECT city FROM weather WHERE condition = 'sunny');
SELECT country FROM location WHERE condition = 'sunny';
SELECT country FROM location WHERE city IN (SELECT city FROM weather WHERE condition = sunny');
SELECT country FROM location WHERE city UNION (SELECT city FROM weather WHERE condition = 'sunny');

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