Hi
Adding a GROUP BY and MAX(EventTime) should solve your case. Provided the query below.
SELECT
NodeName AS [Node Name],
'/Orion/images/StatusIcons/Small-' + StatusIcon AS [_IconFor_Node Name],
DetailsUrl AS [_LinkFor_Node Name],
MAX(DOWNEVENT.EVENTTIME) AS [DOWN TIME]
FROM ORION.NODES NODES
INNER JOIN ORION.EVENTS DOWNEVENT
ON NODES.NODEID = DOWNEVENT.NETWORKNODE
WHERE STATUS = 2
GROUP BY NodeName, StatusIcon, DetailsUrl, Nodes.CustomProperties.Alert_Team
ORDER BY NodeName