Query returning data from two rows of a table in a single row My table looks like this:

ID     APPLICATION    OTHERVALUE
0001   subapp         SubvalueA
0001   mainapp        MainValue1
0002   subapp         SubvalueB
0002   mainapp        MainValue1
0003   subapp         SubvalueA
0003   mainapp        MainValue2


I need all lines of subapp, but then I also need value of OtherValue when the application is mainapp from same table where ID is the same. I'm using Oracle.

How can I build a query for this?

Expected result:

ID     APPLICATION    OTHERVALUE    OTHERVALUE2
0001   subapp         SubvalueA     MainValue1
0002   subapp         SubvalueB     MainValue1
0003   subapp         SubvalueA     MainValue2
You can use an aggregate function and a CASE statement to get the data into this format:

select id,
  max(case when application ='subapp' then application end) application,
  max(case when application ='subapp' then othervalue end) othervalue,
  max(case when application ='mainapp' then othervalue end) othervalue2
from yourtable
group by id;


See SQL Fiddle with demo

Result:

| ID | APPLICATION | OTHERVALUE | OTHERVALUE2 |
-----------------------------------------------
|  1 |      subapp |  SubvalueA |  MainValue1 |
|  2 |      subapp |  SubvalueB |  MainValue1 |
|  3 |      subapp |  SubvalueA |  MainValue2 |