Oracle 21c

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CREATE TABLE docs_vw
AS
SELECT 1 AS training_director_ned_id,
       'Y' AS participating_org_active_flag,
       'ABC' AS nihsac
FROM dual;
1 rows affected

SELECT
  CASE WHEN 1=1 THEN
   (SELECT training_director_ned_id
FROM docs_vw docs
WHERE docs.participating_org_active_flag = 'Y'
  AND ts.nihsac LIKE (docs.nihsac || '%') AND ROWNUM=1 
ORDER BY docs.nihsac ASC)
  END
 
FROM (SELECT 'ABC' AS nihsac FROM dual)  ts
ORA-00907: missing right parenthesis

SELECT
  CASE WHEN 1=1 THEN
   (SELECT training_director_ned_id
FROM docs_vw docs
WHERE docs.participating_org_active_flag = 'Y'
  AND ts.nihsac LIKE (docs.nihsac || '%') AND ROWNUM=1 
/*ORDER BY docs.nihsac ASC*/) -- ORDER BY REMOVED
  END
 
FROM (SELECT 'ABC' AS nihsac FROM dual)  ts


CASEWHEN1=1THEN(SELECTTRAINING_DIRECTOR_NED_IDFROMDOCS_VWDOCSWHEREDOCS.PARTICIPATING_ORG_ACTIVE_FLAG='Y'ANDTS.NIHSACLIKE(DOCS.NIHSAC||'%')ANDROWNUM=1/*ORDERBYDOCS.NIHSACASC*/)--ORDERBYREMOVEDEND


1


SELECT
  CASE WHEN 1=1 THEN
(SELECT training_director_ned_id
FROM docs_vw docs
WHERE docs.participating_org_active_flag = 'Y'
  AND ts.nihsac LIKE  (docs.nihsac || '%')
ORDER BY docs.nihsac ASC
FETCH FIRST 1 ROW ONLY
)
  END
FROM (SELECT 'ABC' AS nihsac FROM dual)  ts


CASEWHEN1=1THEN(SELECTTRAINING_DIRECTOR_NED_IDFROMDOCS_VWDOCSWHEREDOCS.PARTICIPATING_ORG_ACTIVE_FLAG='Y'ANDTS.NIHSACLIKE(DOCS.NIHSAC||'%')ORDERBYDOCS.NIHSACASCFETCHFIRST1ROWONLY)END


1