How to get Previous Value for Null Values

Question

I have the Below Data in my Table.

   | Id  |  FeeModeId   |Name        |   Amount|
   ---------------------------------------------
   | 1   |  NULL                 


        

Answer 1

id  name
1   toto
2   NULL
3   NULL
4   titi
5   NULL
6   NULL
7   tutu
8   NULL
9   NULL


SELECT 
       id_table
       ,name
FROM 
       (
             SELECT
                    T_01.id AS 'id_table'
                    ,max(T_02.id) AS 'id_name'
             FROM
                    names AS T_01
                    cross join  
                    (
                          SELECT
                                 id
                                 ,name
                          FROM
                                 names
                          WHERE
                                 name IS NOT NULL
                    ) AS T_02 
             WHERE 
                    T_02.id <= T_01.id
             GROUP BY 
                    T_01.id
       ) AS tt02
       left join names
       ON names.id = tt02.id_name


id_table    name
1           toto
2           toto
3           toto
4           titi
5           titi
6           titi
7           tutu
8           tutu
9           tutu