Is Not Query in Oracle

Introduction to the Oracle NOT EXISTS operator The NOT EXISTS operator returns true if the subquery returns no row. Otherwise, it returns false. Note that the NOT EXISTS operator returns false if the subquery returns any rows with a NULL value.

Is not equal to in Oracle query?

Comparison OperatorDescription=Equal<>Not Equal!=Not Equal>Greater Than

Is not equal to in SQL?

SQL Not Equal (<>) Operator In SQL, not equal operator is used to check whether two expressions equal or not. If it’s not equal then condition will be true and it will return not matched records. Both != and <> operators are not equal operators and will return same result but !=