Hello,

Maybe I'm in wrong list, so please point the right one. :)

I have strange behaviour of Firebird 0.9.4p1/Win2k and with IB
6.0.1/Win2k during procedure execute.

Procedure code:

SET TERM ^ ;

/* Stored procedures */

CREATE PROCEDURE FACTORIAL (NUMBER INTEGER)
RETURNS (RESULT INTEGER)
AS
BEGIN EXIT; END ^

ALTER PROCEDURE FACTORIAL (NUMBER INTEGER)
RETURNS (RESULT INTEGER)
AS
DECLARE VARIABLE temp INTEGER;
BEGIN
temp = number - 1;
IF (NOT temp IS NULL) THEN BEGIN
IF (temp > 0) THEN
EXECUTE PROCEDURE factorial(:temp) RETURNING_VALUES :temp;
ELSE
temp = 1;
result = number * temp;
END

SUSPEND;
END
^

SET TERM ; ^

Simple enough (at least I think so :))

Statement

SELECT * FROM factorial(5);

executed in ISQL produces error "Unknown error Statement: select *
from factorial(5)" but after pressing "OK" button produces the
result "120".

Statement

EXECUTE PROCEDURE factorial(5);

executes in ISQL without any problem and produces the result "<null>".


The questions are:

- what kind of behaviour should I expect from this simple procedure?

- are there any issues with the recursive procedure calls?

Thanks in advance,
Roman Rokytskyy