Can someone see why im getting error in this query ?

Question

I had 2 queries , instead of using left join i put them together. Now i get error , can someone just take a look to see if syntax wrong somewhere ?
select * from
select i.ips,
a.ips,
a.question_type,
sum(a.score) score,
p.project_name,
p.project_segment,p.location,p.project_exec_model,
p.project_exec_model||' - '||p.project_config pmodel,
one.score schedule,two.score cost,three.score execution,four.score commercial,
nvl(one.score,0)+nvl(two.score,0)+nvl(three.score,0)+nvl(four.score,0) as total,
(select sum(prev_score) prev from XT_RISK_PAST2 where ips = i.ips) prev_score,
(select max(createdt) from tbl_risk_answer where (ips,sample_num) in
(select ips,max(sample_num) from VW_RISK_SCORE group by ips) and ips=i.ips) last_dt
from
(select v.project_id,v.ips,v.sample_num,v.question_id,v.header_desc,v.section_area,v.score,
decode(bi_recurse(q.active_question,1,2),2,'OTR','-')||decode(bi_recurse(q.active_question,1,1),1,'ITO','-') question_type
from VW_RISK_SCORE v left join tbl_risk_question q on v.question_id=q.question_id
where (v.project_id,v.sample_num) in
(select project_id,max(sample_num) sample_num from VW_RISK_SCORE group by project_id)
) a,
(select distinct ips from VW_RISK_SCORE) i,
(select ips, sum(score) score from VW_RISK_SCORE where section_area=1 group by ips) one,
(select ips, sum(score) score from VW_RISK_SCORE where section_area=2 group by ips) two,
(select ips, sum(score) score from VW_RISK_SCORE where section_area=3 group by ips) three,
(select ips, sum(score) score from VW_RISK_SCORE where section_area=4 group by ips) four,
tbl_risk_project p
where i.ips=one.ips(+) and i.ips=two.ips(+) and i.ips=three.ips(+) and i.ips=four.ips(+) and ito on scores.ips=ito.ips
and i.ips=p.ips and  a.question_type='-ITO' group by  i.ips,a.ips, a.question_type, p.project_name, p.project_segment, p.location, p.project_exec_model, p.project_exec_model||' - '||p.project_config, one.score, two.score, three.score, four.score, nvl(one.score,0)+nvl(two.score,0)+nvl(three.score,0)+nvl(four.score,0), (select sum(prev_score) prev from XT_RISK_PAST2 where ips = i.ips), (select max(createdt) from tbl_risk_answer where (ips,sample_num) in
(select ips,max(sample_num) from VW_RISK_SCORE group by ips) and ips=i.ips)
) scores and here is error I get.
ORA-00604: error occurred at recursive SQL level 1
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 12
ORA-00920: invalid relational operator
00604. 00000 - "error occurred at recursive SQL level %s"
*Cause:    An error occurred while processing a recursive SQL statement
(a statement applying to internal dictionary tables).
*Action:   If the situation described in the next error on the stack
can be corrected, do so; otherwise contact Oracle Support.
Error at Line: 30 Column: 4

Answer 1

You would move them to the from-clause, just like one, two, three and four.
Something like:
untested for obvious reasons
select *
  from (select i.ips,
               a.ips,
               a.question_type,
               sum(a.score) score,
               p.project_name,
               p.project_segment,
               p.location,
               p.project_exec_model,
               p.project_exec_model || ' - ' || p.project_config pmodel,
               one.score schedule,
               two.score cost,
               three.score execution,
               four.score commercial,
               nvl(one.score, 0) + nvl(two.score, 0) + nvl(three.score, 0) +
               nvl(four.score, 0) as total,
               (select sum(prev_score) prev
                  from xt_risk_past2
                 where ips = i.ips) prev_score,
               (select max(createdt)
                  from tbl_risk_answer
                 where (ips, sample_num) in
                       (select ips, max(sample_num)
                          from vw_risk_score
                         group by ips)
                   and ips = i.ips) last_dt
          from (select v.project_id,
                       v.ips,
                       v.sample_num,
                       v.question_id,
                       v.header_desc,
                       v.section_area,
                       v.score,
                       decode(bi_recurse(q.active_question, 1, 2),
                              2,
                              'OTR',
                              '-') ||
                       decode(bi_recurse(q.active_question, 1, 1),
                              1,
                              'ITO',
                              '-') question_type
                  from vw_risk_score v
                  left join tbl_risk_question q
                    on v.question_id = q.question_id
                 where (v.project_id, v.sample_num) in
                       (select project_id, max(sample_num) sample_num
                          from vw_risk_score
                         group by project_id)) a,
               (select distinct ips from vw_risk_score) i,
               (select ips, sum(score) score
                  from vw_risk_score
                 where section_area = 1
                 group by ips) one,
               (select ips, sum(score) score
                  from vw_risk_score
                 where section_area = 2
                 group by ips) two,
               (select ips, sum(score) score
                  from vw_risk_score
                 where section_area = 3
                 group by ips) three,
               (select ips, sum(score) score
                  from vw_risk_score
                 where section_area = 4
                 group by ips) four,
               tbl_risk_project p
               -- moved part I
               (select ips,
                       sum(prev_score) prev
                  from xt_risk_past2
                 where ips = i.ips) five --or whatever
               -- moved part II
              (select ips,
                 max(createdt) maxcreatedt
                from tbl_risk_answer
               where (ips, sample_num) in  (select ips, max(sample_num)
                                              from vw_risk_score
                                          group by ips)
               group by ips) six -- or whatever              
         where i.ips = one.ips(+)
           and i.ips = two.ips(+)
           and i.ips = three.ips(+)
           and i.ips = four.ips(+)
           and i.ips = five.ips -- outerjoin if needed
           and i.ips = five.ips -- outerjoin if needed
           and ito on scores.ips = ito.ips
           and i.ips = p.ips
           and a.question_type = '-ITO'
         group by i.ips,
                  a.ips,
                  a.question_type,
                  p.project_name,
                  p.project_segment,
                  p.location,
                  p.project_exec_model,
                  p.project_exec_model || ' - ' || p.project_config,
                  one.score,
                  two.score,
                  three.score,
                  four.score,
                  nvl(one.score, 0) + nvl(two.score, 0) +
                  nvl(three.score, 0) + nvl(four.score, 0),
                  five.prev,
                  six.maxcreatedt
       ) scoresI wonder how all this is going to perform by the way....all those scalar subqueries and outer joins are expensive....
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:1594885400346999596
Read up on Subquery Factoring/WITH-clause, and try to rewrite parts of your query.
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:4423923392083