Whats wrong with the query

Question

Hi
I have a view which is obtained by using multiple unions, sub queries which made the query complex. The view works good and gives correct data when i select all the records from the view. But the problem is when I use where clause and filter then it is giving me an error message which is shown below. In other words "select * from view" works good but "select * from view where dateran >to_date('3/3/2011','mm/dd/yyyy') ".
Now I dont understand is why the query is not working when I use the where clause. Can any one tell what could be the reason?
ERROR MESSAGE
+"ORA-01427: single-row subquery returns more than one row+
+01427. 00000 - "single-row subquery returns more than one row"+
Thanks,

Answer 1

CREATE OR replace FORCE VIEW "SECO"."D_REWORK_REPORT_V"
("MATERIALID", "CUSTOMER", "ORDER#", "PRODUCT", "STEELGRADEID", "GAUGE", "WIDTH"
, "DEFECTCODE", "DEFECTCOMMENT", "RESPONSIBLEUNIT", "SEVERITY", "COMMENTS",
"ENTRYCOIL", "ENTRYWEIGHT", "DATERAN", "SHIFTDATERAN")
AS
  SELECT
  /*+ USE_HASH */ mf.me_id                                        materialid,
                  tp.customername,
                  v.au_nr                                         order#,
                  taup.productid                                  product,
                  taup.sc_steelgradeid                            steelgrade,
                  taup.coilorderthickness                         thick,
                  taup.coilorderwidth                             width,
                  mf.fehlertyp                                    defectcode,
                  ft.displaytext                                  defectcomment,
                  mf.fehlerverursacher
                  unitresponsible,
                  mf.auspraegung                                  priority,
                  mf.bemerkung                                    comments,
                  (SELECT matbezeichnung
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           ereignisiderfassung))
                                                                  entrytcoil,
                  (SELECT aftergew
                   FROM   d_matevents_v c
                   WHERE  c.me_id = v.me_id
                          AND c.ereignisid = ereignisiderfassung) entryweight,
                  (SELECT erstelldatum
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           ereignisiderfassung))
                                                                  dateran,
                  (SELECT CASE
                            WHEN To_number(To_char(erstelldatum, 'HH24')) < 7
                          THEN
                            erstelldatum - 1
                            ELSE erstelldatum
                          END
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           ereignisiderfassung))
                                                                  shiftdateran
  FROM   matfehler mf,
         matfehler_prj mfp,
         tap_prj tp,
         taup_prj taup,
         vlfehlerverursacher_v fv,
         vlfehlertyp_v ft,
         vlfehlerauspraegung_v fa,
         d_matevents_v v
  WHERE  mf.me_id = v.me_id
         AND v.au_nr = tp.au_nr(+)
         AND tp.au_nr = taup.au_nr(+)
         AND mf.fehlerverursacher = fv.fehlerverursacher(+)
         AND mf.fehlerverursacher <> 'TAC'
         AND mf.fehlertyp = ft.fehlertyp(+)
         AND mf.auspraegung = fa.auspraegung(+)
         AND mf.me_id = mfp.me_id
         AND mf.lfd_nr = mfp.lfd_nr
         AND v.fa_nr LIKE '%-%'
         AND v.bemerkung = 'kmpL3TMArb.processTTM_REPORT_TO_L3'
         AND v.dtstorno IS NULL
         AND Trunc (mf.erstelldatum) BETWEEN
             To_date ('01/01/'
                      || ( To_char (SYSDATE,
                           'YYYY') - 1
                 'MM/DD/YYYY') AND Trunc (SYSDATE)
         AND v.ereignisid = (SELECT MIN (ereignisid)
                             FROM   matereignis a
                             WHERE  a.fa_nr LIKE '%-%'
                                    AND Nvl (a.bemerkung, 'A') =
                                        'kmpL3TMArb.processTTM_REPORT_TO_L3'
                                    AND a.dtstorno IS NULL
                                    AND a.me_id = v.me_id
                                    AND 2 = (SELECT COUNT (DISTINCT
                                                    matbezeichnung
                                             FROM   matereignis b
                                             WHERE  b.fa_nr LIKE '%-%'
                                                    AND b.me_id = a.me_id
                                                    AND b.dtstorno IS NULL)
                             GROUP  BY a.me_id)
         AND ereignisiderfassung = (SELECT MAX (a.ereignisid)
                                    FROM   matereignis a
                                    WHERE  a.me_id = v.me_id
                                           AND a.ereignisid < v.ereignisid
                                           AND a.dtstorno IS NULL
                                           AND ( a.ausloeser = 'DIALOG'
                                                  OR a.ausloeser =
                                                     'MaterialQM_MPanel' )
                                           AND ( a.bemerkung != 'Unblocking'
                                                  OR Substr (a.bemerkung, 1, 9)
                                                     =
                                                     'kmpSIVPES'
  UNION
  SELECT
  /*+ USE_HASH */ mf.me_id
                  materialid,
                  tp.customername,
                  v.au_nr
                  order#,
                  taup.productid
                  product,
                  taup.sc_steelgradeid
                  steelgrade,
                  taup.coilorderthickness
                  thick,
                  taup.coilorderwidth
                  width,
                  mf.fehlertyp
                  defectcode,
                  ft.displaytext
                  defectcomment,
                  mf.fehlerverursacher
                  unitresponsible,
                  mf.auspraegung
                  priority,
                  mf.bemerkung
                  comments,
                  matbezeichnung
                  entrytcoil,
                  aftergew
                  entryweight,
                  (SELECT erstelldatum
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           v.ereignisid))
                  dateran,
                  (SELECT CASE
                            WHEN To_number(To_char(erstelldatum, 'HH24')) < 7
                          THEN
                            erstelldatum - 1
                            ELSE erstelldatum
                          END
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           v.ereignisid))
                  shiftdateran
  FROM   matfehler mf,
         matfehler_prj mfp,
         tap_prj tp,
         taup_prj taup,
         vlfehlerverursacher_v fv,
         vlfehlertyp_v ft,
         vlfehlerauspraegung_v fa,
         d_matevents_v v
  WHERE  mf.me_id = v.me_id
         AND v.au_nr = tp.au_nr(+)
         AND tp.au_nr = taup.au_nr(+)
         AND mf.fehlerverursacher = fv.fehlerverursacher(+)
         AND mf.fehlertyp = ft.fehlertyp(+)
         AND mf.auspraegung = fa.auspraegung(+)
         AND mf.me_id = mfp.me_id
         AND mf.lfd_nr = mfp.lfd_nr
         AND v.fa_nr LIKE '%-%'
         AND Trunc (mf.erstelldatum) BETWEEN
             To_date ('01/01/'
                      || ( To_char (SYSDATE,
                           'YYYY') - 1
                 'MM/DD/YYYY') AND Trunc (SYSDATE)
         -- If a coil gets a rework more than 2 times, get the first record
         AND v.ereignisid = (SELECT MIN (ereignisid)
                             FROM   matereignis a
                             WHERE  a.fa_nr LIKE '%-%'
                                    AND a.dtstorno IS NULL
                                    AND a.me_id = v.me_id
                                    AND 2 < (SELECT COUNT (DISTINCT
                                                    matbezeichnung
                                             FROM   matereignis b
                                             WHERE  b.fa_nr LIKE '%-%'
                                                    AND b.me_id = a.me_id
                                                    AND b.dtstorno IS NULL)
                             GROUP  BY a.me_id)
         AND ereignisiderfassung = (SELECT MAX (a.ereignisid)
                                    FROM   d_matevents_v a
                                    WHERE  a.me_id = v.me_id
                                           AND a.ereignisid <
                                               (SELECT b.ereignisid
                                                FROM   matereignis b
                                                WHERE  b.fa_nr LIKE '%-%'
                                                       AND
                                               b.metyp = 'Anbinden'
                                                       AND b.matbezeichnung =
                                                           v.matbezeichnung
                                                       AND b.me_id = v.me_id))
  UNION
  SELECT
  /*+ USE_HASH */ mf.me_id
                  materialid,
                  tp.customername,
                  v.au_nr
                  order#,
                  taup.productid
                  product,
                  taup.sc_steelgradeid
                  steelgrade,
                  taup.coilorderthickness
                  thick,
                  taup.coilorderwidth
                  width,
                  mf.fehlertyp
                  defectcode,
                  ft.displaytext
                  defectcomment,
                  mf.fehlerverursacher
                  unitresponsible,
                  mf.auspraegung
                  priority,
                  mf.bemerkung
                  comments,
                  matbezeichnung
                  entrytcoil,
                  aftergew
                  entryweight,
                  (SELECT erstelldatum
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           v.ereignisid)) AS
                  dateran,
                  (SELECT CASE
                            WHEN To_number(To_char(erstelldatum, 'HH24')) < 7
                          THEN
                            erstelldatum - 1
                            ELSE erstelldatum
                          END
                   FROM   matereignis c
                   WHERE  c.me_id = v.me_id
                          AND bemerkung = 'process scrap'
                          AND subtyp = 'Produktion'
                          AND dtstorno IS NULL
                          AND matbezeichnung = (SELECT a.matbezeichnung
                                                FROM   d_matevents_v a
                                                WHERE  me_id = v.me_id
                                                       AND dtstorno IS NULL
                                                       AND a.ereignisid =
                                                           v.ereignisid)) AS
                  shiftdateran
  FROM   matfehler mf,
         matfehler_prj mfp,
         tap_prj tp,
         taup_prj taup,
         vlfehlerverursacher_v fv,
         vlfehlertyp_v ft,
         vlfehlerauspraegung_v fa,
         d_matevents_v v
  WHERE  mf.me_id = v.me_id
         AND v.au_nr = tp.au_nr(+)
         AND tp.au_nr = taup.au_nr(+)
         AND mf.fehlerverursacher = fv.fehlerverursacher(+)
         AND mf.fehlertyp = ft.fehlertyp(+)
         AND mf.auspraegung = fa.auspraegung(+)
         AND mf.me_id = mfp.me_id
         AND mf.lfd_nr = mfp.lfd_nr
         AND v.fa_nr LIKE '%-%'
         AND Trunc (mf.erstelldatum) BETWEEN
             To_date ('01/01/'
                      || ( To_char (SYSDATE,
                           'YYYY') - 1
                 'MM/DD/YYYY') AND Trunc (SYSDATE)
         -- If a coil gets a rework more than 2 times, get the second record
         AND v.ereignisid = (SELECT ereignisid
                             FROM   matereignis a
                             WHERE  a.fa_nr LIKE '%-%'
                                    AND a.me_id = v.me_id
                                    AND a.dtstorno IS NULL
                                    AND ROWNUM = 1
                                    AND a.ereignisid > (SELECT MIN (ereignisid)
                                                        FROM   matereignis b
                                                        WHERE
                                        b.fa_nr LIKE '%-%'
                                        AND b.dtstorno IS
                                            NULL
                                        AND
                                                       b.me_id = a.me_id
                                                               AND 2 <
                                                       (SELECT COUNT (DISTINCT
                                                               matbezeichnung)
                                                        FROM   matereignis c
                                                        WHERE
                                        c.fa_nr LIKE '%-%'
                                        AND
                                                       c.me_id = b.me_id
                                                               AND c.dtstorno IS
                                                                   NULL)
                                                        GROUP  BY a.me_id))
         AND ereignisiderfassung = (SELECT MAX (a.ereignisid)
                                    FROM   d_matevents_v a
                                    WHERE  a.me_id = v.me_id
                                           AND a.ereignisid <
                                               (SELECT MIN (b.ereignisid)
                                                FROM   matereignis b
                                                WHERE  b.fa_nr LIKE '%-%'
                                                       AND
                                               b.metyp = 'Anbinden'
                                                       AND b.matbezeichnung =
                                                           v.matbezeichnung
                                                       AND b.me_id = v.me_id));