how to fix "MySQL 1064 error Syntax Workbench"

FRANCISCO JAVIER RICO SANCHEZ

I am new to mysql and I have this problem with my code

CREATE FUNCTION fnejEdad_Obtener
(

p_fechaNacimiento date,

p_fechaHoy date
)

RETURNS int

BEGIN

    declare v_edad int;

set v_edad = TIMESTAMPDIFF (year,p_fechaNacimiento, p_fechaHoy);

if (DATEPART(month, p_fechaNacimiento) > DATEPART(month,p_fechaHoy))
    then

set v_edad = v_edad - 1;

else if
(DATEPART
(month, p_fechaNacimiento) <= DATEPART
(month,p_fechaHoy)) and
(DATEPART
(DAY, p_fechaNacimiento) > DATEPART
(DAY,p_fechaHoy))
    then
set v_edad = v_edad - 1;

end
if;

    IF v_edad < 0 THEN
SET v_edad = 0;
END
IF; -- > update 

    RETURN v_edad;

END;
nbk

Your function has to be as follows. Elseif has be to be written together.

DELIMITER //
    CREATE FUNCTION fnejEdad_Obtener
    (p_fechaNacimiento date,p_fechaHoy date)

    RETURNS int

    BEGIN

        declare v_edad int;

        set v_edad = TIMESTAMPDIFF(year,p_fechaNacimiento, p_fechaHoy);

        if (DATEPART(month, p_fechaNacimiento) > DATEPART(month,p_fechaHoy)) then    
          set v_edad = v_edad - 1;      
        elseif
          (DATEPART(month, p_fechaNacimiento) <= DATEPART(month,p_fechaHoy)) and
          (DATEPART(DAY, p_fechaNacimiento) > DATEPART(DAY,p_fechaHoy)) then
         set v_edad = v_edad - 1;

        end if;

        IF v_edad < 0 THEN
        SET v_edad = 0;
        END IF; -- > update 

        RETURN v_edad;

    END

//

DELIMITER ;

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