Formater la date et l'heure courante sous forme de chaîne au format AAAAMMJJHHMMSS :

SELECT
  EXTRACT(YEAR FROM CURRENT_TIMESTAMP) ||
  SUBSTRING(100+EXTRACT(MONTH FROM CURRENT_TIMESTAMP) FROM 2 FOR 2) ||
  SUBSTRING(100+EXTRACT(DAY FROM CURRENT_TIMESTAMP) FROM 2 FOR 2) ||
  SUBSTRING(100+EXTRACT(HOUR FROM CURRENT_TIMESTAMP) FROM 2 FOR 2) ||
  SUBSTRING(100+EXTRACT(MINUTE FROM CURRENT_TIMESTAMP) FROM 2 FOR 2) ||
  SUBSTRING(100+EXTRACT(SECOND FROM CURRENT_TIMESTAMP) FROM 2 FOR 2)
FROM rdb$database;