Single row subquery returns more than one row SQL Oracle

Question

I am trying to get multiple rows to display on the same line. I have the follow code:

SELECT DISTINCT
  SUBSTR(JOB.JOBNAME,1,25) "Jobname",'|',
  (SELECT SUBSTR(VAR.VAREXPR,1,15) 
FROM CTMSLO80.CMS_SETVAR VAR
    WHERE var.var = '%%PS8-PRCSNAME'
      AND JOB.jobno   =  VAR.jobno) "Process",'|',
  (SELECT SUBSTR(VAR.VAREXPR,1,30) FROM CTMSLO80.CMS_SETVAR VAR
    WHERE var.var = '%%PS8-RUNCONTROLID'
      AND JOB.jobno   =  VAR.jobno) "Run Cntrl ID",'|',
  NVL((SELECT SUBSTR(VAR.VAREXPR,1,20) FROM CTMSLO80.CMS_SETVAR VAR
    WHERE var.var = '%%PS8-PRCSTYPE'
      AND JOB.jobno   =  VAR.jobno), ' ') "Process Type",'|',
  SUBSTR(DAYSCAL,1,10) "Calendar",'|',
  NVL2(JOB.FROMTIME,SUBSTR(JOB.FROMTIME,1,2)||':'||SUBSTR(JOB.FROMTIME,3,2),' ') "From",'|',
  NVL2(JOB.Until  ,SUBSTR(JOB.Until,1,2)||':'||SUBSTR(JOB.Until,3,2),' ') "Until",'|',
   Case
WHEN JOB.DAYSTR = 'ALL' THEN
JOB.DAYSTR
Else
SUBSTR(NVL(REPLACE(REPLACE(REPLACE(REPLACE(TRANSLATE(JOB.WDAYSTR,'01234567AL','0MTW4F7AL'),'0','Su'),'4','Th'),'7','Sa'),'ALL','Daily'),' '),1,16)
End
"Days",'|',
  NVL(JOB.DESCRIPT,' ') "Description",'|',
  SUBSTR (job.jobname,1,5) "Table",'|',
(SELECT SUBSTR (CON.CONDNAME,1,75) FROM CTMSLO80.CMS_CON_J CON
   WHERE CON.ROWTYPE = 'I' 
   AND JOB.JOBNO = CON.JOBNO) "In Cond",'|',
  (SELECT SUBSTR(VAR.VAREXPR,1,35) FROM CTMSLO80.CMS_SETVAR VAR
    WHERE var.var = '%%PS8-DESCRIPTION'
      AND JOB.jobno   =  VAR.jobno) "Description",'|',
  SUBSTR(JOB.OWNER,1,6) "BMCID",'|',
  NVL2(JOB.DESCRIPT,(SUBSTR(JOB.DESCRIPT,1,INSTR(JOB.DESCRIPT,'/',1,1)-1)),'1') JOBORDER
  FROM CTMSLO80.CMS_JOBDEF JOB, CTMSLO80.CMS_SETVAR VAR
      where  OWNER LIKE 'BMCHR'
      and JOB.JOBno   =  VAR.JOBno

The part where I run into trouble is:

(SELECT SUBSTR (CON.CONDNAME,1,75) FROM CTMSLO80.CMS_CON_J CON
   WHERE CON.ROWTYPE = 'I' 
   AND JOB.JOBNO = CON.JOBNO) "In Cond",'|',

It will return one value, but if I have multiple values to return, it will give an error "ORA-01427: Single Row Subquery returns more than one row"

I've tried various methods like XML path, IN, EXISTS, etc, but those give me different errors that I am not able to resolve. Anyone have experience with something like this?

===========================

Thank you for responses

Version if PL/SQL is 9.0.6.1655

Don't know what you mean by "Delimiter"

Not having success breaking down the code into a smaller chunk. I did not write the bulk of this code, but am trying to tweak it to work with what I am trying to do.

The link that was provided did help get rid of the error. I used the "MAX" function and changed the pertinent query to be:

(SELECT max(SUBSTR (CON.CONDNAME,1,75)) FROM CTMSLO80.CMS_CON_J CON
   WHERE CON.ROWTYPE = 'I' 
   AND JOB.JOBNO = CON.JOBNO) "In Cond",'|',

Now it will return the first item at least. However, I would like to be able to return multiple items. This part of the query returns a column that has a value like below:

In Cond

example1

There is more data to pull however, I want it to return like so:

In Cond

example1, example2

Any ideas on how I can get it to do that?

Answer 1

Use LISTAGG() if you want a list:

(SELECT LISTAGG(SUBSTR(CON.CONDNAME, 1, 75), '|') WITHIN GROUP (ORDER BY CON.CONDNAME)
 FROM CTMSLO80.CMS_CON_J CON
 WHERE CON.ROWTYPE = 'I' AND JOB.JOBNO = CON.JOBNO
)  as "In Cond", 

Note that the maximum size of the list is subject to Oracle limits on strings, 4,000 characters. You might overflow if your list is too long.