IF @mandator_id IS NOT NULL AND @eduOfferTitle <> 'Alle' SELECT * FROM ( select ' == Benutzer in Bildungsangebot "' + @eduOfferTitle + '" für Mandant "' + (select tblMandators.name FROM tblMandators WHERE tblMandators.id = @mandator_id) + '" ==' AS 'Benutzer in Bildungsangebot' UNION select v_Users.Nachname + ', ' + v_Users.Vorname + ' (' + v_Users.descUserCn + ')' AS 'Benutzer in Bildungsangebot' FROM tblEduOffers INNER JOIN tblItems ON tblItems.id = tblEduOffers.id INNER JOIN tblEduOffersTargetGroups ON tblEduOffers.id = tblEduOffersTargetGroups.eduoffer_id INNER JOIN tblUsersTargetGroups ON tblEduOffersTargetGroups.targetgroup_id = tblUsersTargetGroups.targetGroup_id INNER JOIN v_Users ON tblUsersTargetGroups.UserCn = v_Users.intUserCn WHERE tblItems.title = @eduOfferTitle ) T ORDER BY 'Benutzer in Bildungsangebot' ELSE select tblItems.title as 'Bildungsangebot', tblMandators.name as 'Mandant', COUNT(DISTINCT tblUsersTargetGroups.userCn) as 'Anzahl Benutzer' from tblEduOffers INNER JOIN tblItems on tblItems.id = tblEduOffers.id inner join tblEduOffersTargetGroups ON tblEduOffers.id = tblEduOffersTargetGroups.eduoffer_id inner join tblUsersTargetGroups ON tblEduOffersTargetGroups.targetgroup_id = tblUsersTargetGroups.targetgroup_id inner join tblTargetGroups ON tblEduOffersTargetGroups.targetGroup_id = tblTargetGroups.id inner join tblMandators ON tblTargetGroups.mandator_id = tblMandators.id where tblTargetGroups.mandator_id = ISNULL(@mandator_id, tblTargetGroups.mandator_id) AND (@eduOfferTitle IS NULL OR @eduOfferTitle = 'Alle' OR tblItems.title = @eduOfferTitle ) group by tblItems.title,tblMandators.name order by [Bildungsangebot], [Mandant] select distinct tblItems.title as 'text' from tblEduOffers join tblItems on tblEduOffers.id = tblItems.id where tblEduOffers.mandator_id = ISNULL(@mandator_id, tblEduOffers.mandator_id) order by 'text'