text: SELECT depts.dir1 + depts.dir2 FROM (
  	SELECT
  		depts1.directeur AS dir1,
  		depts2.directeur AS dir2
  	FROM
  		"departements.csv" AS depts1,
  		"departements.csv" AS depts2
  	WHERE depts2.idd - depts1.idd = 1)
  AS depts;
  
  [normal]
  1
  19
  26
  17
  79
  99
  77
  102
  68
  35
  