Обсуждение: when using a bound cursor, error found...
I 'll use a bound cursor with parameters.
But when I use such a cursor, I found a error.
I don't know error message.
How can I use a bound cursor.
in following sample, near a 'for loop' , error found.
------------------------------------------------------------------------------
CREATE OR REPLACE FUNCTION cursor_test(
vp_param1 VARCHAR
,vp_param2 VARCHAR
,vp_param2 VARCHAR
)
RETURNS VARCHAR AS $BODY$
DECLARE
p_param1 VARCHAR;
p_param1 VARCHAR;
p_param1 VARCHAR;
cur_test CURSOR (c_param VARCHAR) IS
SELECT col_1, col_2, col_3 FROM tab_1 WHERE col_1 = c_param;
SELECT col_1, col_2, col_3 FROM tab_1 WHERE col_1 = c_param;
rec_test RECORD;
v_count NUMERIC;
BEGIN
p_param1 := nullif(vp_param1 , '');
p_param2 := nullif(vp_param2 , '');
p_param2 := nullif(vp_param2 , '');
IF p_param1 = 'txn' THEN
-------------------------------------------------
-- cursor
-------------------------------------------------
OPEN cur_test(p_param2);
-- cursor
-------------------------------------------------
OPEN cur_test(p_param2);
for rec_test in cur_test loop
--FETCH cur_test INTO rec_test;
SELECT count(*) INTO v_count FROM tab_2 WHERE col_1 = rec_test.col_1 and col_2 = rec_test.col_2 ;
IF v_count >0 THEN
insert into tab_2
(
col_1
, col_2
, col_3
)
values
(
rec_test.col_1
, rec_test.col_2
, rec_test.col_3
);
END IF;
end loop; -- cur_test
SELECT count(*) INTO v_count FROM tab_2 WHERE col_1 = rec_test.col_1 and col_2 = rec_test.col_2 ;
IF v_count >0 THEN
insert into tab_2
(
col_1
, col_2
, col_3
)
values
(
rec_test.col_1
, rec_test.col_2
, rec_test.col_3
);
END IF;
end loop; -- cur_test
CLOSE cur_test;
END IF;
RETURN 'txn OK';
RETURN 'txn OK';
END;
$BODY$ LANGUAGE plpgsql;
$BODY$ LANGUAGE plpgsql;
On Tue, Mar 29, 2005 at 08:49:49PM +0900, ?????? wrote: > I 'll use a bound cursor with parameters. > But when I use such a cursor, I found a error. > I don't know error message. It's usually a good idea to post the error message. In most cases it should say what's wrong, or at least where something's wrong. > DECLARE > p_param1 VARCHAR; > p_param1 VARCHAR; You've declared the same variable twice; the second declaration should be p_param2. > OPEN cur_test(p_param2); > > for rec_test in cur_test loop I don't think you can iterate over a cursor this way. Rather than use an explicit cursor, why not use "FOR rec_test IN SELECT ..."? FOR loops automatically use cursors so you don't have to open one yourself. But if you want to use a cursor then you could do something like this: OPEN cur_test(p_param2); LOOP FETCH cur_test INTO rec_test; EXIT WHEN NOT FOUND; -- rest of code END LOOP; CLOSE cur_test; -- Michael Fuhr http://www.fuhr.org/~mfuhr/