presto-main/src/main/java/io/prestosql/type/IntegerOperators.java/IntegerOperators/equal
class IntegerOperators:    @ScalarOperator(EQUAL)
    @SqlType(StandardTypes.BOOLEAN)
    @SqlNullable
    public static Boolean equal(@SqlType(StandardTypes.INTEGER) long left, @SqlType(StandardTypes.INTEGER) long right)
    {
        return left == right;
    }