合并mysql中的行

Question

I have data like:

ID     Code1     Procedures1     Code2     Procedure2
001   1          a, b, c         NA        NA
001   NA         NA              2         x, y, z 

And i would like it to look like this:

ID     Code1     Procedures1     Code2     Procedure2
001   1          a, b, c         2         x, y, z 

I tried different versions of concat as well as groupings and it didnt seem to work.

Thanks for the help!

Answer 1

try this

Update MyTable a
(inner join select * from MyTable) b on a.ID=b.ID
set a.Code1=case when a.Code1 is not null then Code1 else Code2 end,
    a.Procedures1=case when a.Procedures1 is not null then a.Procedures1 else b.Procedures2 end,
    a.Code2=case when a.Code2 is not null then a.Code2 else b.Code2 end,
    a.Procedures2 =case when a.Procedures2 is not null then a.Procedures2 else b.Procedures2 end

and after that remove the duplicated of just running

select distinct * from My_Table