Firebird中的本地化月份名称

select
extract (year from prt.dtbegin) as f_year,
(
  case extract (month from prt.dtbegin)
    when 1 then \'Январь\'
    when 2 then \'Февраль\'
    /* ... */
    when 12 then \'Декабрь\'
  end
) as f_month,
cast (lpad (extract (day from prt.dtbegin), 2, 0) as char(2)) as f_day,
(
  cast (lpad (extract (hour from prt.dtbegin), 2, 0) as char(2)) 
  || \' - \'
  || cast (lpad (extract (hour from prt.dtbegin) + 1, 2, 0) as char(2)) 
) as f_hour
from prt