number of errors=0
number of warnings=0
country=FR
Group=chkGrpPostalCode
select distinct admincode1,adminname1 from zip_code where countrycode in ('FR') and admincode1 in (select admincode1 from (select distinct admincode1,adminname1 from zip_code where countrycode in ('FR')) t group by admincode1 having count(*)>1) order by admincode1
http://www.laposte.fr/Particulier/Utiliser-nos-outils-pratiques/Outils-et-documents/Trouvez-un-code-postal
admincode1 adminname1