Replace null value with previous available value in Row SQL server query

Question

I am looking for building a query to replace null value with previous available values.can somebody help.Here is the table currently looking like

11/30/2015          


        

Answer 1

I think this should work, I am assuming the table and column names since you have not provided these, also assuming id is the column based on which you are ordering the rows

 UPDATE table1 T
    SET T.date1 = (
                     SELECT MAX(T2.date)
                       FROM table1 T2
                      WHERE T2.date IS NOT NULL
                        AND T2.id <= T.id
                  )
  WHERE T.date1 IS NULL