Consolidating three rows into one

Question

Hello,
I am struggling to figure this out and my googling hasn't quite led me to what I need. I have found some ideas such as sys_connect_by_path but I want to convert my three rows into columns (using one row), not concatenate them. I can not quite find the right thing or work it out. The code below gives me the columns I want but I can not figure out how to consolidate it onto one row. When I uncomment the group by line it doesn't like it as the role and emp fields are not group expressions. The values I wish to pivot are strings and not numbers (role).
Would anybody be kind enough to help?? my brain has frozen!! :D
Thanks very much
Jon
With t As
         Select 25840 id, 'Bob' emp, 'Primary' role  From dual Union All
         Select 25840, 'Jim', 'Secondary' From dual Union All
         Select 25840, 'Dave', 'Tertiary' From dual
    Select
    id
    ,decode(role,'Primary',emp) Prim
    ,decode(role,'Secondary',emp) Sec
    ,decode(role,'Tertiary',emp) Ter
    From
    t
    --group by id

Answer 1

You just need to add a MAX and uncomment the GROUP BY
SQL> ed
Wrote file afiedt.buf
  1  With t As
  2           (
  3            Select 25840 id, 'Bob' emp, 'Primary' role  From dual Union All
  4            Select 25840, 'Jim', 'Secondary' From dual Union All
  5            Select 25840, 'Dave', 'Tertiary' From dual
  6           )
  7   Select
  8      id
  9      ,max(decode(role,'Primary',emp)) Prim
10      ,max(decode(role,'Secondary',emp)) Sec
11      ,max(decode(role,'Tertiary',emp)) Ter
12    From t
13*  group by id
SQL> /
        ID PRIM SEC  TER
     25840 Bob  Jim  DavePersonally, I'd use a CASE rather than a DECODE, but that doesn't matter much.
Justin