Si CREATIONDATE est un type de données de date, il contient l'élément de temps jusqu'aux secondes. Il est très peu probable que l'identifiant d'incident que vous recherchez le plus bas ait l'heure exacte. Formatez la date en une date ISO et GROUP BY ignorera les décalages horaires.
SELECT TO_CHAR(MIN(I.INCIDENTID)) AS "Incident ID",
to_char(I.CREATIONDATE, 'yyyy-mm-dd') AS "Creation Date",
M.MESSAGESUBJECT AS "Email Subject",
MO.IPADDRESS AS "IP Address",
MO.DOMAINUSERNAME AS "Login ID",
MO.ENDPOINTMACHINENAME AS "Computer Name"
FROM MESSAGE M
LEFT JOIN INCIDENT I
ON M.MESSAGESOURCE = I.MESSAGESOURCE
AND M.MESSAGEID = I.MESSAGEID
AND M.MESSAGEDATE = I.MESSAGEDATE
LEFT JOIN MESSAGEORIGINATOR MO
ON M.MESSAGEORIGINATORID = MO.MESSAGEORIGINATORID
LEFT JOIN MESSAGEEXT ME
ON ME.MESSAGEID = M.MESSAGEID
LEFT JOIN INCIDENTSTATUS S
ON S.INCIDENTSTATUSID = I.INCIDENTSTATUSID
LEFT JOIN CUSTOMATTRIBUTESRECORD C
ON C.CUSTOMATTRIBUTESRECORDID = I.CUSTOMATTRIBUTESRECORDID
GROUP BY to_char(I.CREATIONDATE, 'yyyy-mm-dd')
M.MESSAGESUBJECT,
MO.IPADDRESS,
MO.DOMAINUSERNAME,
MO.ENDPOINTMACHINENAME
