Código SQL:
Ver originalCREATE TABLE #temp
(
sso VARCHAR(30)
)
INSERT INTO #temp VALUES ('93757230')
INSERT INTO #temp VALUES ('93757230')
INSERT INTO #temp VALUES ('93757231')
INSERT INTO #temp VALUES ('93757231')
INSERT INTO #temp VALUES ('93646299')
INSERT INTO #temp VALUES ('93646300')
SELECT COUNT(sso), sso FROM #temp GROUP BY sso HAVING COUNT(sso)=1
Saludos!