select tdoc_libelle as Support, location_libelle as Localisation, section_libelle as Section, count(expl_id) as "Nombre d'exemplaires" from exemplaires left join docs_location on idlocation=expl_location left join docs_section on idsection=expl_section left join docs_type on expl_typdoc=idtyp_doc where expl_typdoc in (!!choixsupport!!) group by 1,2,3 order by 1,2,3