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Taske 14 Explanation Question 2 SurfThe Stream is interested to see how long customers are watching movie previews. Write an SQL query(s) to allow the database to capture these statistics. This query should add an attribute to the Previews table called "duration". It should store a number greater than zero which corresponds to the number of seconds for which the customer watched the Preview. This attribute should not be null however any existing tuples in the Previews table should have their "duration" set to 100.- a 2.txt or a 2.sql Maximum Number of Queries 32 File Name SQL Solution