Question

I’m quite new on data bases and would be very grateful for some help, I have a database on the following format:

ID     Nbr     Data1     Data2    Data3
1      1       a    
2      1                 b
3      1                          c
4      2       d    
5      2                 e
6      2                          f

And would like to have a way to extract, with a MySQL query, the data on the following format:

Nbr     Data1     Data2    Data3
1       a         b        c
2       d         e        f

I know that is not best practice to have the data on a non normalized format but sadly I can’t change the source data.

Grateful for your help!

Answer 1

Insert into newtable 
    select ID,Nbr,max(Data1),max(Data2),max(Data3) from table group by Nbr

Try this and let me know it worked or not