Display totals of 0 when no rows problem

Question

i have the following data
code code2 rank id
a1 red ff 1
a1 red ff 2
a1 red cm 3
a1 blue ff 4
a1 blue ff 5
a1 blue ff 6
a1 blue wma 7
I want to display this grouped as follows
a1 red ff 2
a1 red cm 1
a1 red wma 0
a1 red wmb 0
a1 blue ff 3
a1 blue cm 0
a1 blue wma 1
a1 blue wmb 0
i can retrieve the counted totals of id okay and include the wma, wmb rank but can only display them once not within each group of code, code2
Any Help?

Answer 1

Hi,
You're correct that you need an outer join.
If you make your present query an in-line view, it doesn't matter what's going on inside it: you can OUTER JOIN to the result set as you need to.
Try this
WITH
original_query  AS
select s.code, w.watch, r.code
       AS r_code -- Make names unique
       , count(*) amt
                         from  frs_station_assignments sa,
                        frs_stations s, frs_watches w, frs_firefighters f,
                        frs_ranks r
                       where r.code = f.rnk_code
                       and sa.fgt_id = f.id
                       and sa.stn_id = s.id
                      and sa.wch_id = w.id
                      and r.code in ('CM','FF', 'WMA','WMB')
                      and s.code = 'A1'
                      and w.watch in ('RED','WHITE','BLUE','GREEN')
              group by s.code, w.watch, r.code
              -- ORDER BY is done in main query
SELECT  code
,       colors.watch
,       r_code
,       NVL (amt, 0)
FROM    colors
LEFT OUTER JOIN  original_query oq
ON      colors.watch = oq.watch
order by code, watch, r_code;If you don't have a colors table (with one row for every possible color), you can use another in-line view:
WITH
colors  AS
    SELECT DISTINCT watch
    FROM  frs_watches
    WHERE ... -- If necessary
original_query AS ...
[PRE]
If frs_watches is the colors table, then take all references to it out of the big in-line view, and put them in the main query.