Try this one -
SELECT
NEWID() AS urlid --<-- column with GUID datatype
, P.subDomainId
, P.RegionID
INTO #tempcom
FROM dbo.Phrase P
Update -
DECLARE @urlid AS UNIQUEIDENTIFIER
SET @urlid = '4c595d6c-1e8a-45cf-aaf2-fe5a45b881b9'
UPDATE #tempcom
SET urlid = @urlid
WHERE subdomain = 'wwww.borasloppis.se'