Problems performing an outer join

Question

I added some criteria to the following sql statement to get the relationship.
ie ('Husband', 'Wife','Father','Mother','Step Mother','Step Father','Father in-law','Mother in-law')
The problem is that I also want to beable to display those that are not in this category. So I thought that I could do and outer join such as
and hcr.relationship_name(+) in ('Husband',
'Wife',
This does not work. Can anyone recommend how I can perform an outer join to get that information that does not meet the in statement?
thanks
select      hac.case_id,hac.relation_to_hoh_id,hcr.RELATIONSHIP_NAME,
          decode(ha.GENDER_ID,1,'(F)',2,'(M)',3,'(T)') || ' Adult ' ||
          round((trunc(sYSdate) - ha.DATE_OF_BIRTH) / 365,0) info, 0 sort_by
from      dpss_hts.hts_applicant ha,
          dpss_hts.hts_applicant_case hac,
          dpss_hts.certa_relationship hcr          
where      ha.applicant_id = hac.applicant_id
and      round((trunc(sYSdate) - ha.DATE_OF_BIRTH) / 365,0) > 17
and      hac.relation_to_hoh_id = hcr.RELATIONSHIP_ID
and hcr.relationship_name in ('Husband',
'Wife',
'Father',
'Mother',
'Step Mother',
'Step Father',
'Father in-law',
'Mother in-law')

Answer 1

If I understand correctly, you want to display the relationship_name only if it is one of those in the list. If it is not, then you want to display the rest of the data, but not the realtionship_name.
Two approaches spring to mind. You can use an in-line view to select only the relationship_names you are interested in, then outer join to that in-line view like:
SELECT hac.case_id, hac.relation_to_hoh_id, hcr.relationship_name,
       DECODE(ha.gender_id, 1, '(F)', 2, '(M)', 3, '(T)')||' Adult '||
       ROUND((TRUNC(sysdate) - ha.date_of_birth) / 365, 0) info, 0 sort_by
FROM dpss_hts.hts_applicant ha, dpss_hts.hts_applicant_case hac,
     SELECT relationship_id, relationship_name
     FROM dpss_hts.certa_relationship
     WHERE hcr.relationship_name in ('Husband', 'Wife', 'Father', 'Mother',
                                     'Step Mother', 'Step Father',
                                     'Father in-law', 'Mother in-law') hcr
WHERE ha.applicant_id = hac.applicant_id and
      ROUND((TRUNC(sysdate) - ha.date_of_birth) / 365, 0) > 17 and
      hac.relation_to_hoh_id = hcr.relationship_id(+)Another alternative would be do leave the current join intact, lose the predicate on relationship_name and do the dciding in the SELECT list.
Something like:
SELECT hac.case_id, hac.relation_to_hoh_id,
       CASE WHEN hcr.relationship_name IN ('Husband', 'Wife', 'Father',
                                           'Mother', 'Step Mother',
                                           'Step Father', 'Father in-law',
                                           'Mother in-law') THEN hcr.relationship_name
            ELSE NULL END relationship_name,
       DECODE(ha.gender_id, 1, '(F)', 2, '(M)', 3, '(T)')||' Adult '||
       ROUND((TRUNC(sysdate) - ha.date_of_birth) / 365, 0) info, 0 sort_by
FROM dpss_hts.hts_applicant ha, dpss_hts.hts_applicant_case hac,
     dpss_hts.certa_relationship hcr
WHERE ha.applicant_id = hac.applicant_id and
      ROUND((TRUNC(sysdate) - ha.date_of_birth) / 365, 0) > 17 and
      hac.relation_to_hoh_id = hcr.relationship_idHTH
John