SELECT EMP1.EMP_CODE AS CODE,EMP1.EMP_LAST_NAME AS SURNAME,EMP1.EMP_FIRST_NAME AS NAME
FROM EMP AS EMP1
LEFT JOIN EMP AS EMP2
	ON trim(replace(EMP2.EMP_LAST_NAME,' ','')) = trim(replace(EMP1.EMP_LAST_NAME,' ','')) 
	AND trim(replace(EMP2.EMP_FIRST_NAME,' ','')) = trim(replace(EMP1.EMP_FIRST_NAME,' ','')) 
	AND EMP2.EMP_CODE <> EMP1.EMP_CODE
WHERE EMP1.VALID_FLG = '1'
ORDER BY trim(replace(EMP1.EMP_LAST_NAME,' ','')),EMP1.EMP_CODE