Oracle error 01841 Help please!

Question

I am using 10g on Unix. I am converting queries to Oracle and am down to a few errors that I cannot resolve on my own. I have this query
SELECT DISTINCT TI.TICKET_ID,
(QUEUE_DATE-(TO_CHAR(TRUNC(SYSDATE),'YYYYMMDD'))) AS DAYS_OPEN,
TI.QUEUE_DATE,
L1.LONG_DESC AS ITEM_STATUS,
R.REQUEST_DESC,
H.HELP_DESK_NAME,
U.NAME_LAST || ', ' || U.NAME_FIRST AS ASSIGNED_TECH
FROM WEBDESK.WD_TICKET T
INNER JOIN WEBDESK.WD_TICKET_ITEM TI ON ((TI.TICKET_ID = T.TICKET_ID) AND (TI.ROUTE_GROUP_ID = 'G5097'))
LEFT OUTER JOIN WEBDESK.WD_GROUP G ON (TI.ROUTE_GROUP_ID = GROUP_ID)
LEFT OUTER JOIN WEBDESK.WD_USER U ON (U.USER_ID = TI.TECH_USER_ID)
LEFT OUTER JOIN WEBDESK.WD_REQUEST R ON (T.REQUEST_ID = R.REQUEST_ID)
LEFT OUTER JOIN WEBDESK.WD_LOOK_UP L ON (T.REQUEST_CATEGORY_NO = L.LOOKUP_ID)
LEFT OUTER JOIN WEBDESK.WD_LOOK_UP L1 ON (TI.STATUS_NO = L1.LOOKUP_ID)
LEFT OUTER JOIN WEBDESK.WD_HELP_DESK H ON (T.HELP_DESK_ID = H.HELP_DESK_ID)
LEFT OUTER JOIN
(SELECT IR.TICKET_ID,IR.TICKET_ITEM_ID
FROM WEBDESK.WD_TICKET_IROUTE IR
INNER JOIN WEBDESK.WD_TICKET_ITEM TIM ON ((IR.TICKET_ID = TIM.TICKET_ID)
AND (IR.ITEM_ID_DEPENDENCY = TIM.TICKET_ITEM_ID)
AND (TIM.END_DATE = '31-DEC-9999'))) LIR ON ((TI.TICKET_ID = LIR.TICKET_ID)
AND (TI.TICKET_ITEM_ID = LIR.TICKET_ITEM_ID))
WHERE ((LIR.TICKET_ID IS NULL)
AND (TI.TECH_USER_ID IS NULL))
--AND (TI.END_DATE = '31-DEC-9999')
UNION
SELECT DISTINCT TI.TICKET_ID,
(TI.QUEUE_DATE-(TO_CHAR(TRUNC(SYSDATE),'YYYYMMDD'))) AS DAYS_OPEN,
TI.QUEUE_DATE,
L1.LONG_DESC AS ITEM_STATUS,
R.REQUEST_DESC,
H.HELP_DESK_NAME,
U.NAME_LAST || ', ' || U.NAME_FIRST AS ASSIGNED_TECH
FROM WEBDESK.WD_TICKET T
INNER JOIN WEBDESK.WD_TICKET_ITEM TI ON (TI.TICKET_ID = T.TICKET_ID)
INNER JOIN WEBDESK.WD_USER_GROUP UG ON ((TI.ROUTE_GROUP_ID = UG.GROUP_ID) AND ((TI.TECH_USER_ID = UG.USER_ID)
AND (UG.GROUP_ID = 'G5097')) AND (TI.TECH_USER_ID IS NOT NULL))
LEFT OUTER JOIN WEBDESK.WD_GROUP G ON (TI.ROUTE_GROUP_ID = G.GROUP_ID)
LEFT OUTER JOIN WEBDESK.WD_USER U ON (U.USER_ID = TI.TECH_USER_ID)
LEFT OUTER JOIN WEBDESK.WD_REQUEST R ON (T.REQUEST_ID = R.REQUEST_ID)
LEFT OUTER JOIN WEBDESK.WD_LOOK_UP L ON (T.REQUEST_CATEGORY_NO = L.LOOKUP_ID)
LEFT OUTER JOIN WEBDESK.WD_LOOK_UP L1 ON (TI.STATUS_NO = L1.LOOKUP_ID)
LEFT OUTER JOIN WEBDESK.WD_HELP_DESK H ON (T.HELP_DESK_ID = H.HELP_DESK_ID)
--WHERE (TI.END_DATE = '31-DEC-9999')
ORDER BY 2 DESC,3,4
and when I run it I am getting
ORA-01841: (full) year must be between -4713 and +9999, and not be 0
01841. 00000 - "(full) year must be between -4713 and +9999, and not be 0"
*Cause:    Illegal year entered
*Action:   Input year in the specified range
As far as I can tell the date IS in the proper range, but obviously I am missing something. Any help is greatly appreciated.

Answer 1

AND ( tim.end_date = '31-DEC-9999' ) ))With Oracle characters between single quote marks are STRINGS!
'This is a string, 2009-12-31, not a date'
When a DATE datatype is desired, then use TO_DATE() function.
SELECT DISTINCT ti.ticket_id,
                ( queue_date - ( To_char(Trunc(SYSDATE), 'YYYYMMDD') ) ) AS
                days_open,
                ti.queue_date,
                l1.long_desc                                             AS
                item_status,
                r.request_desc,
                h.help_desk_name,
                u.name_last
                || ', '
                || u.name_first                                          AS
                assigned_tech
FROM   webdesk.wd_ticket t
       inner join webdesk.wd_ticket_item ti
         ON ( ( ti.ticket_id = t.ticket_id )
              AND ( ti.route_group_id = 'G5097' ) )
       left outer join webdesk.wd_group g
         ON ( ti.route_group_id = group_id )
       left outer join webdesk.wd_user u
         ON ( u.user_id = ti.tech_user_id )
       left outer join webdesk.wd_request r
         ON ( t.request_id = r.request_id )
       left outer join webdesk.wd_look_up l
         ON ( t.request_category_no = l.lookup_id )
       left outer join webdesk.wd_look_up l1
         ON ( ti.status_no = l1.lookup_id )
       left outer join webdesk.wd_help_desk h
         ON ( t.help_desk_id = h.help_desk_id )
       left outer join (SELECT ir.ticket_id,
                               ir.ticket_item_id
                        FROM   webdesk.wd_ticket_iroute ir
                               inner join webdesk.wd_ticket_item tim
                                 ON ( ( ir.ticket_id = tim.ticket_id )
                                      AND ( ir.item_id_dependency =
                                          tim.ticket_item_id )
                                      AND ( tim.end_date = '31-DEC-9999' ) ))
                       lir
         ON ( ( ti.ticket_id = lir.ticket_id )
              AND ( ti.ticket_item_id = lir.ticket_item_id ) )
WHERE  ( ( lir.ticket_id IS NULL )
         AND ( ti.tech_user_id IS NULL ) )
--AND (TI.END_DATE = '31-DEC-9999')
UNION
SELECT DISTINCT ti.ticket_id,
                ( ti.queue_date - ( To_char(Trunc(SYSDATE), 'YYYYMMDD') ) ) AS
                days_open,
                ti.queue_date,
                l1.long_desc                                                AS
                item_status,
                r.request_desc,
                h.help_desk_name,
                u.name_last
                || ', '
                || u.name_first                                             AS
                assigned_tech
FROM   webdesk.wd_ticket t
       inner join webdesk.wd_ticket_item ti
         ON ( ti.ticket_id = t.ticket_id )
       inner join webdesk.wd_user_group ug
         ON ( ( ti.route_group_id = ug.group_id )
              AND ( ( ti.tech_user_id = ug.user_id )
                    AND ( ug.group_id = 'G5097' ) )
              AND ( ti.tech_user_id IS NOT NULL ) )
       left outer join webdesk.wd_group g
         ON ( ti.route_group_id = g.group_id )
       left outer join webdesk.wd_user u
         ON ( u.user_id = ti.tech_user_id )
       left outer join webdesk.wd_request r
         ON ( t.request_id = r.request_id )
       left outer join webdesk.wd_look_up l
         ON ( t.request_category_no = l.lookup_id )
       left outer join webdesk.wd_look_up l1
         ON ( ti.status_no = l1.lookup_id )
       left outer join webdesk.wd_help_desk h
         ON ( t.help_desk_id = h.help_desk_id )
--WHERE (TI.END_DATE = '31-DEC-9999')
ORDER  BY 2 DESC,
          3,
          4