Selecting with PL/SQL

Question

Hi everyone,
I have a table with the following info
ClientName | PromoCode | ... with few more additional columns
John........... AAA
Brian...........AAC
Chung......... AAA
Mery........... AAA
Kyle ...........AAC
Peter...........AAB
and so on.
Now I need to select the count of each distinct PromoCode that has been used. In this case I want the output to be
TotalAAA | TotalAAC | TotalAAB
3 ............. 2 ............. 1
Please let me know if you need more info. I really appreciate for your help.
Thank you.

Answer 1

Warren probably meant, something like:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> with t as(
  2  select 'John' ClientName, 'AAA' PromoCode from dual union all
  3  select 'Brian', 'AAC' from dual union all
  4  select 'Chung', 'AAA' from dual union all
  5  select 'Mery', 'AAA' from dual union all
  6  select 'Kyle ', 'AAC' from dual union all
  7  select 'Peter', 'AAB' from dual )
  8  --
  9  select max(decode(promocode,'AAA', count(clientname),null)) TotalAAA,
10          max(decode(promocode,'AAB', count(clientname),null)) TotalAAB,
11          max(decode(promocode,'AAC', count(clientname),null)) TotalAAC
12  from t
13  group by promocode;
  TOTALAAA   TOTALAAB   TOTALAAC
         3          1          2
SQL> But the number of promocodes increases, the number of decode statements increases and hardcoding them.