[Juanito-Kun]

El primer Procedure queda :

Código SQL [-]
CREATE PROCEDURE HORARIO_DIA_PLAZA (
    CVEDEPPZA VARCHAR (15) CHARACTER SET ISO8859_1)
AS
DECLARE VARIABLE VSQL VARCHAR(100);
DECLARE VARIABLE VDIAHORPZA INTEGER;
DECLARE VARIABLE VCVECATPER VARCHAR (15);
BEGIN
  /* Procedure body */
 for select distinct H.DIAHORPZA, PZ.CVECATPER
   from TBLHORPZA H, DETDEPPZA PZ
   where  H.CVEDEPPZA  = :CVEDEPPZA and
          H.CVEDEPPZA  = PZ.CVEDEPPZA and
          PZ.STADEPPZA = 1
   into
   :VDIAHORPZA,:VCVECATPER
 do
  execute procedure horario_no_checada(:VCVECATPER, :VDIAHORPZA);
  SUSPEND;
END

El segundo:

Código SQL [-]
CREATE PROCEDURE HORARIO_NO_CHECADA (
    CVECATPER VARCHAR (15) CHARACTER SET ISO8859_1,
    DIA INTEGER)
AS

DECLARE VARIABLE VNChecada integer;
DECLARE VARIABLE VDia   integer;
DECLARE VARIABLE VDIAHORPZA Integer;
DECLARE VARIABLE VHORHORPZA TIME;
DECLARE VARIABLE VTURHORPZA INTEGER;
DECLARE VARIABLE VNUMHORPZA INTEGER;
DECLARE VARIABLE VIDEHORPZA INTEGER;

BEGIN
VNChecada=1;

  /* Procedure body */
 for  select  H.DIAHORPZA, H.HORHORPZA,
              H.TURHORPZA, H.NUMHORPZA, H.IDEHORPZA
   from TBLHORPZA H, DETDEPPZA PZ
   where PZ.CVECATPER = :CVECATPER  and
         H.CVEDEPPZA = PZ.CVEDEPPZA and
         PZ.STADEPPZA = 1           and
         H.DIAHORPZA = IA
   Order by H.DIAHORPZA, HORHORPZA, TPOHORPZA DESC,H.CVEDEPPZA
   into
    VDIAHORPZA,VHORHORPZA,VTURHORPZA,VNUMHORPZA,VIDEHORPZA
  do
   begin

    Update tblhorpza set
    NUMHORPZA=:VNChecada
    where IDEHORPZA=:VIDEHORPZA;
    VNChecada=VNChecada + 1 ;

   end
    suspend;
  /*Aqui termina el procedimiento de calcular el numero de checada*/
END

Los valores que retornan los puse como varibles, les cambie el nombre por comodidad .

Saludos!! espero que les sirva...