Problem with connect_by_isleaf in apex

Question

Hello,
I'm having problem with a query that, executed in sqlplus and in apex htmldb workshop, gives me different results !
try the following :
CREATE TABLE test_tab (ID INT PRIMARY KEY, ID_MASTER INT, DESCRIPTION VARCHAR2(100),PLACE INT);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (1,NULL,'ROOT',1);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (2,1,'LEVEL_ONE_A',1);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (3,1,'LEVEL_ONE_B',2);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (4,2,'LEVEL_TWO_A',1);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (5,2,'LEVEL_TWO_B',2);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (6,5,'LEVEL_THREE_A',1);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (7,6,'LEVEL_FOUR_A',2);
INSERT INTO test_tab (ID,ID_MASTER,DESCRIPTION,PLACE) VALUES (8,1,'LEVEL_ONE_C',3);
select connect_by_isleaf LEAF,DESCRIPTION,PLACE
from test_tab
start with id = 1 connect by prior id = id_master
this gives following correct result in sqlplus :
0 ROOT      1
0 LEVEL_ONE_A 1
1 LEVEL_TWO_A 1
0 LEVEL_TWO_B 2
0 LEVEL_THREE_A 1
1 LEVEL_FOUR_A 2
1 LEVEL_ONE_B 2
1 LEVEL_ONE_C 3
If i execute this in htmldb , on the same database, i get :
0     ROOT     1
0     LEVEL_ONE_A     1
1     LEVEL_TWO_A     1
1     LEVEL_TWO_B     2
0     LEVEL_THREE_A     1
1     LEVEL_FOUR_A     1
1     LEVEL_ONE_B     2
1     LEVEL_ONE_C     3
-> level_two_b should be 0 !!
I found a bug that describes this (3900842) but that was executed on the DB. Isn't a query executed in the sqlworkshop or in sqlplus, executed in the same sql engine ?
grtz,
Chris.

Answer 1

Looks like it's still a database bug. In 10.1.0.4, I get the correct results in sqlplus from the query but I get incorrect results in sqlplus if I do it like this:set serveroutput on
declare
    l_cursor    integer := DBMS_SQL.OPEN_CURSOR;
    l_desc_tbl  DBMS_SQL.DESC_TAB2;
    l_ignore    number;
    l_col_cnt   integer;
    l_col_val   varchar2(32767);
BEGIN
    DBMS_SQL.PARSE(l_cursor,
'select connect_by_isleaf LEAF,DESCRIPTION,PLACE from test_tab start with id = 1 connect by prior id = id_master',
        DBMS_SQL.NATIVE);
    l_ignore := DBMS_SQL.EXECUTE(l_cursor);   
    DBMS_SQL.DESCRIBE_COLUMNS2(l_cursor, l_col_cnt, l_desc_tbl );
    for i in 1 .. l_col_cnt loop              
        DBMS_SQL.DEFINE_COLUMN(l_cursor, i, l_col_val, 32767 );
    end loop;
    while (DBMS_SQL.FETCH_ROWS(l_cursor) > 0)
    loop
        for i in 1 .. l_col_cnt loop
            DBMS_SQL.COLUMN_VALUE(l_cursor, i, l_col_val);           
            -- print the column value
            dbms_output.put_line(l_col_val);
        end loop;
        dbms_output.put_line(chr(10));      
    END LOOP;
    if DBMS_SQL.IS_OPEN(l_cursor) then
        DBMS_SQL.CLOSE_CURSOR(l_cursor);
    end if;
END;
/Scott