EXISTS Operator in MySQL
EXISTS operator is used in MySQL to test for the existence of any record in a subquery.
EXISTS Operator works with a parent query and a child query. A parent query will execute if the child query returns any value.
Note:
The EXISTS operator can be used with the NOT operator to negate its results, helping to determine if a given record is unique.
MySQL EXISTS Operator
MySQL EXISTS operator is a boolean operator that returns true or false depending on the existence of any record in a subquery.
EXISTS operator returns true if the subquery returns one or more than one value.
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