Method _create_distinct

lib/sqlalchemy/sql/elements.py:3982–3993

(
        cls,
        expr: _ColumnExpressionArgument[_T],
    )

    @classmethod
    def _create_distinct(
        cls,
        expr: _ColumnExpressionArgument[_T],
    ) -> UnaryExpression[_T]:
        col_expr: ColumnElement[_T] = coercions.expect(
            roles.ExpressionElementRole, expr
        )
        return UnaryExpression(
            col_expr,
            operator=operators.distinct_op,
            type_=col_expr.type,
        )

    @classmethod
    def _create_bitwise_not(