Which operators test whether a subquery returns any rows?(a) IN and NOT IN(b) EXISTS and NOT EXISTS(c) PRESENT(d) ABSENTI got this question in homework.My question comes from Performing Multiple in portion Using SQL to Manage Data of MySQL

Which operators test whether a subquery returns any rows?(a) IN and NO

1.	Which operators test whether a subquery returns any rows?(a) IN and NOT IN(b) EXISTS and NOT EXISTS(c) PRESENT(d) ABSENTI got this question in homework.My question comes from Performing Multiple in portion Using SQL to Manage Data of MySQL
Answer» RIGHT option is (b) EXISTS and NOT EXISTS Easiest explanation: The OPERATORS ‘EXISTS’ and ‘NOT EXISTS’ operators only TEST WHETHER a subquery returns any rows. If it returns a row, ‘EXISTS’ results into true and ‘NOT EXISTS’ results into false.

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Which operators test whether a subquery returns any rows?(a) IN and NOT IN(b) EXISTS and NOT EXISTS(c) PRESENT(d) ABSENTI got this question in homework.My question comes from Performing Multiple in portion Using SQL to Manage Data of MySQL

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