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19. EXISTS Operator in MySQL.sql

-- The EXISTS operator is used to test for the existence of any record in a subquery. -- The EXISTS operator returns TRUE if the subquery returns one or more records. -- It can be used in a SELECT, ...
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exists operator.sql

-- The EXISTS operator is used to test for the existence of any record in a subquery. -- The EXISTS operator returns TRUE if the subquery returns one or more records. -- The following SQL statement ...