select 
extract(t.xml,'//Square//text()','xmlns="urn:GIS"').getStringVal() as Square,
extract(t.xml,'//UKPG//text()','xmlns="urn:GIS"').getStringVal() as UKPG,
extract(t.xml,'//SKV//text()','xmlns="urn:GIS"').getStringVal() as SKV,
extract(t.xml,'//DataIsl//text()','xmlns="urn:GIS"').getStringVal() as Data,
extract(t.xml,'//Pribor//TypeP//text()','xmlns="urn:GIS"').getStringVal() as Pribor,
extract(t.xml,'//FIOINt//text()','xmlns="urn:GIS"').getStringVal() as FIOINt
from GIS_xml t
where extract(t.xml,'//SKV//text()','xmlns="urn:GIS"').getStringVal()='3017'