   occurrence.determiner,
   releve.id_digitiser,
   occurrence.id_nomenclature_determination_method,
-  CONCAT('Relevé : ', COALESCE(releve.comment, ' - '), 'Occurrence: ', COALESCE(occurrence.comment, ' -')),
+  CONCAT(COALESCE('Relevé : '||releve.comment || ' / ', NULL ), COALESCE('Occurrence: '||occurrence.comment, NULL)),
   'I'
 );
 

-- Fonction utilisée pour les triggers vers synthese
CREATE OR REPLACE FUNCTION pr_occtax.insert_in_synthese(my_id_counting integer)
  RETURNS integer[] AS
  $BODY$
DECLARE

new_count RECORD;

BEGIN
  -- récupération du releve pour le commentaire à concatener
  SELECT INTO releve * FROM pr_occtax.t_releves_occtax WHERE id_releve_occtax = NEW.id_releve_occtax;
  IF releve.comment = '' THEN releve.comment = NULL; END IF;
  IF NEW.comment = '' THEN NEW.comment = NULL; END IF;
  UPDATE gn_synthese.synthese SET
    id_nomenclature_obs_meth = NEW.id_nomenclature_obs_meth,
    id_nomenclature_bio_condition = NEW.id_nomenclature_bio_condition,
    id_nomenclature_bio_status = NEW.id_nomenclature_bio_status,
