unique admin name2 for NO

number of errors=0
number of warnings=0
country=NO
Group=chkGrpPostalCode

select distinct admincode1,admincode2,adminname2 from zip_code where countrycode in ('NO') and admincode1 || admincode2 in (select admincode1 || admincode2 from (select distinct admincode1,admincode2,adminname2 from zip_code where countrycode in ('NO')) t group by admincode1,admincode2 having count(*)>1) order by admincode1,admincode2

admincode1	admincode2	adminname2