Getting Records Returned When Criteria Doesn't Match (Using One Query)

Question

I have made two queries which I would like to fold into one query if possible. The first query includes all grp_id's. The second query updates grp_id's with an (active) member count. This second query has criteria in it that grabs only grp_id's that have active members. This would be similar to say, for example, a left join situation where everything is returned from table A and only those matching from table B.
The problem is that if I put these together, they have to be linked by grp_id, so obvioulsy, if I put these queries together, the only grp_id's I will get back are the ones that have active members in them, but as I mentioned, I need all grp_id's to be shown regardless of any active membership.
So, here is the code that doesn't work to give a better idea of what I want.
select g00.grp_id,
count(m06.subs_ssn)
from gmaster g00
join m_elig m06 on
g00.grp_id = m06.grp_id
and m06.eff_date < sysdate
and m06.exp_date > sysdate
and m06.stat_code = 'ACTIVE'
group by g00.grp_id
Again, this will only give me counts for grp_id's with active members in them, whereas I want all grp_id's shown and those grp_id's without active members to have a zero next to the count..
m06 gives the member data and g00 gives the grp_id data. The m06 eff_date and exp_date and stat_code as shown above determine active members..
Thanks for any suggestions..

Answer 1

I don't know why its not working. I did make an error in the intial posting of the data which was to put NOAM in grpid 'C'. I thought this might be my error, but I corrected it and am still getting the same results.
I have repasted the DDL statements, the query I'm using, the results and also the data as it shows when I query the two tables. (my query is based off the tables created using the posted DDL).
I also posted QUERY B. Which shows that the removal of the eff_dt and exp_dt criteria allows grp_id to be posted in the results, obviously showing 1 record as I no longer am defining an ACTIVE member by having criteria as posted in QUERY A.
Is my LEFT OUTER JOIN statement written correctly?
Also of note: I could not insert the data without the apostrophes in the dates. It gave me an error (Column not allowed here). Using the apostrophes eliminates this message and allows the data insertion. At least for now its not causing an issue as the data shows correct when I query it based a simple query of the dates.
Using PL/SQL don't know if that makes a difference..?
=======================================================
DATA IN TBL: GRP_ID:
1     A
2     B
3     C
4     D
DATA IN TBL: MBR
1     MARK     A     Y     1/1/2011     7/1/2011
2     MARK     A     Y     7/1/2011     1/1/2012
3     MARTY     A     Y     1/1/2011     7/1/2011
4     MARTY     A     Y     7/1/2011     1/1/2012
5     FRANK     B     Y     1/1/2011     7/1/2011
6     FRANK     B     Y     7/1/2011     1/1/2012
7     MARY     B     Y     1/1/2011     7/1/2011
8     MARY     B     Y     7/1/2011     1/1/2012
9     JEAN     C     Y     1/1/2011     7/1/2011
10     JEAN     C     Y     7/1/2011     1/1/2012
11     NOAM     D     Y     1/1/2011     7/1/2011
As you can see, Mark, Marty should have 1 active record in grp_id 'A' (total 2), Frank and Mary should have 1 active record each 'B' (total 2), Jean should have 1 active record in 'C' grp_id, total 1) and Noam should have no active records.
====================================
QUERY A:
SELECT
g00.grpid,
count(m00.grpid) mbr_count
FROM
grp_id g00
left outer join mbr m00 on
g00.grpid = m00.grpid
WHERE
m00.eff_dt < sysdate
AND
m00.exp_dt > sysdate
GROUP BY
g00.grpid
QUERY A RESULTS
1     A     2
2     B     2
3     C     1
QUERY B
SELECT
g00.grpid,
count(m00.grpid) mbr_count
FROM
grp_id g00
left outer join mbr m00 on
g00.grpid = m00.grpid
GROUP BY
g00.grpid
QUERY B RESULTS:
1     A     4
2     B     4
3     C     2
4     D     1
=================================================
DDL STATEMENTS
create table mbr (mbr_name varchar(10), grpid varchar(1), stat varchar(1), eff_dt date, exp_dt date)
insert into mbr values ('MARK', 'A','Y', '01-jan-2011', '01-jul-2011')
insert into mbr values ('MARK', 'A','Y','01-jul-2011', '01-jan-2012')
insert into mbr values ('MARTY', 'A','Y','01-jan-2011', '01-jul-2011')
insert into mbr values ('MARTY', 'A','Y', '01-jul-2011', '01-jan-2012')
insert into mbr values ('FRANK', 'B','Y','01-jan-2011', '01-jul-2011')
insert into mbr values ('FRANK', 'B','Y','01-jul-2011', '01-jan-2012')
insert into mbr values ('MARY', 'B','Y','01-jan-2011', '01-jul-2011')
insert into mbr values ('MARY', 'B','Y','01-jul-2011', '01-jan-2012')
insert into mbr values ('JEAN', 'C','Y','01-jan-2011', '01-jul-2011')
insert into mbr values ('JEAN', 'C','Y','01-jul-2011', '01-jan-2012')
insert into mbr values ('NOAM', 'D','Y','01-jan-2011', '01-jul-2011')
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