Help in update instruction, please

Question

hi,
i can't make progress in my update instruction and need some help. Oracle makes an ora-00907 message and says that a bracket is missing but in this case it doesn't make sense.
update DM_MESSDATEN
set DM_MESSDATEN.FAUNA_ID=1 where MISSION_ID in (select DM_MESSDATEN.MISSION_ID from
DM_MISSION, DM_MESSDATEN where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID AND
measure_name='Transit CT-WB' AND DM_MESSDATEN.FAUNA_ID=999999 AND rownum <2 order by mission_id);
i used this as standalone and it works fine but within update i need a subselect and can't use this join,
select DM_MESSDATEN.MISSION_ID from
DM_MISSION, DM_MESSDATEN where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID AND
measure_name='Transit CT-WB' AND DM_MESSDATEN.FAUNA_ID=999999 AND rownum <2 order by mission_id;

Answer 1

Furthrmore, I don't understand your query :
You wrote :
update DM_MESSDATEN
set DM_MESSDATEN.FAUNA_ID=1
where MISSION_ID in (select DM_MESSDATEN.MISSION_ID
                     from   DM_MISSION, DM_MESSDATEN
                     where  DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID
                     AND    measure_name='Transit CT-WB'
                     AND    DM_MESSDATEN.FAUNA_ID=999999
                     AND rownum <2But where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID seems always true, so why add this one ? Or is it a mistake ?
That's not very clear in my head...
Nicolas.