Help in query writing

Question

Hello
i want to write a query like that
here is my table test1
FNAME                     PTYPE
adeel                     a    
adeel                     a    
qasim                     a    
qasim                     b    
asim                      b    
asim                      b    
6 rows selectedrequire output like
Fname    count(a)      count(b)
adeel        2                 -
qasim        1                1any samr way to do in sql ?

Answer 1

Why isn't 'asim' in your output?
Anyway, this might give an idea:
SQL> -- generating sample data:
SQL> with test1 as (
  2  select 'adeel' fname, 'a' ptype from dual union all
  3  select 'adeel', 'a' from dual union all
  4  select 'qasim', 'a' from dual union all   
  5  select 'qasim', 'b' from dual union all    
  6  select 'asim',  'b' from dual union all    
  7  select 'asim',  'b' from dual
  8  )
  9  --
10  -- actual query:
11  --    
12  select fname
13  ,      sum(case when ptype = 'a' then 1 else 0 end) "count(a)"
14  ,      sum(case when ptype = 'b' then 1 else 0 end) "count(b)"
15  from   test1
16  group by fname;
FNAME   count(a)   count(b)
adeel          2          0
qasim          1          1
asim           0          2