Bug in 11g CUBE_TABLE function?

Question

An unusual feature of the 11g OLAP CUBE_TABLE function has surfaced when querying a dimension.
If a dimension has more than one hierarchy then if CUBE_TABLE is used to query a second or subsequent hierarchy on a dimension, and a WHERE clause on the DEPTH column is specified, no records will appear regardless of the value queried.
eg. Imagine a dimenson TIME with two hierarchies FINANCIAL and CALENDAR (FINANCIAL having been defined first).
The query "SELECT DEPTH, COUNT(*) DCOUNT from TABLE(CUBE_TABLE('TIME;FINANCIAL')) GROUP BY DEPTH ORDER BY DEPTH" will list how many dimension values have each value of DEPTH
The query "SELECT * from TABLE(CUBE_TABLE('TIME;FINANCIAL')) WHERE DEPTH=0" will show the entire record corresponding to the top of the FINANCIAL hierarchy
Repeat this for hierarchy CALENDAR.
The first query will work correctly but the second will return an empty record set.
I would say this is a bug.
To demonstrate this effect in your own database you can run the following procedure (it will loop though all your dimensions and run these two queries.):-
create or replace
PROCEDURE SHOW_CUBE_TABLE_ERROR AS
BEGIN
DECLARE
OLINE VARCHAR2(100);
SLINE VARCHAR2(300);
CURSOR ahv IS SELECT owner, dimension_name, hierarchy_name FROM sys.all_cube_hierarchies ;
TYPE dynCurTyp IS REF CURSOR;
dyn dynCurTyp;
RDEPTH INTEGER;
RCOUNT INTEGER;
BEGIN
FOR item IN ahv LOOP
OLINE := item.owner || '.' || item.dimension_name || ';' || item.hierarchy_name;
DBMS_OUTPUT.PUT_LINE(OLINE);
DBMS_OUTPUT.PUT_LINE(LPAD('=',LENGTH(OLINE),'='));
SLINE := 'SELECT DEPTH, COUNT(*) DCOUNT FROM TABLE(CUBE_TABLE(''' || OLINE || ''')) GROUP BY DEPTH ORDER BY DEPTH';
DBMS_OUTPUT.PUT_LINE(SLINE);
OPEN dyn FOR SLINE;
DBMS_OUTPUT.PUT_LINE('DEPTH DCOUNT');
DBMS_OUTPUT.PUT_LINE('----- ------');
LOOP
FETCH dyn INTO RDEPTH, RCOUNT;
EXIT WHEN dyn%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(LPAD(RDEPTH, 5, ' ') || LPAD(RCOUNT, 9, ' '));
END LOOP;
DBMS_OUTPUT.PUT_LINE(' ');
CLOSE dyn;
SLINE := 'SELECT count(*) DCOUNT FROM TABLE(CUBE_TABLE(''' || OLINE || ''')) where DEPTH=0';
DBMS_OUTPUT.PUT_LINE(SLINE);
OPEN dyn FOR SLINE;
DBMS_OUTPUT.PUT_LINE('DCOUNT');
DBMS_OUTPUT.PUT_LINE('------');
LOOP
FETCH dyn INTO RCOUNT;
EXIT WHEN dyn%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(LPAD(RCOUNT, 6, ' '));
END LOOP;
DBMS_OUTPUT.PUT_LINE(' ');
CLOSE dyn;
DBMS_OUTPUT.PUT_LINE(' ');
END LOOP;
END;
END SHOW_CUBE_TABLE_ERROR;

Answer 1

David
Thanks for replying.
1) I am using version Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production (A patch)
2) There currently only is one schema but the problem is reproduceable in all AW's
3) Attaching all AW's explicitly and performing ALLSTAT does not affect the result
4) Reversing the order of the hierarchies does not affect the result either
I have modified my procedure to perform actions (3) and (4)
create or replace
PROCEDURE SHOW_CUBE_TABLE_ERROR(REVHIER BOOLEAN) AS
BEGIN
DECLARE
THISAW VARCHAR2(20);
OLINE VARCHAR2(100);
SLINE VARCHAR2(300);
CURSOR awl IS SELECT aw_name FROM sys.user_aws;
TYPE ahvCurTyp IS REF CURSOR;
ahvr ahvCurTyp;
TYPE dynCurTyp IS REF CURSOR;
dyn dynCurTyp;
ROWNER VARCHAR2(20);
RDIMENSION VARCHAR2(20);
RHIERARCHY VARCHAR2(20);
RDEPTH INTEGER;
RCOUNT INTEGER;
BEGIN
FOR item IN awl LOOP
THISAW := item.aw_name;
dbms_aw.execute('aw attach ' || THISAW || ' ro');
END LOOP;
IF REVHIER THEN
OPEN ahvr for 'SELECT owner, dimension_name, hierarchy_name FROM sys.all_cube_hierarchies ORDER BY owner, dimension_name, hierarchy_name desc';
ELSE
OPEN ahvr for 'SELECT owner, dimension_name, hierarchy_name FROM sys.all_cube_hierarchies ORDER BY owner, dimension_name, hierarchy_name asc';
END IF;
LOOP
FETCH ahvr INTO ROWNER, RDIMENSION, RHIERARCHY;
EXIT WHEN ahvr%NOTFOUND;
--FOR item IN ahv LOOP+
--THISAW := dbms_aw.eval_text('obj( aw ''' || item.dimension_name || ''')');+
--OLINE := item.owner || '.' || item.dimension_name || ';' || item.hierarchy_name;+
THISAW := dbms_aw.eval_text('obj( aw ''' || RDIMENSION || ''')');
OLINE := ROWNER || '.' || RDIMENSION || ';' || RHIERARCHY;
DBMS_OUTPUT.PUT_LINE(OLINE || ' (AW: ' || THISAW ||')');
DBMS_OUTPUT.PUT_LINE(LPAD('=', LENGTH(OLINE) LENGTH(THISAW) + 7,'='));+
dbms_aw.execute('aw attach ' || THISAW || ' first');
dbms_aw.execute('allstat');
SLINE := 'SELECT DEPTH, COUNT(*) DCOUNT FROM TABLE(CUBE_TABLE(''' || OLINE || ''')) GROUP BY DEPTH ORDER BY DEPTH';
DBMS_OUTPUT.PUT_LINE(SLINE);
OPEN dyn FOR SLINE;
DBMS_OUTPUT.PUT_LINE('DEPTH   DCOUNT');
DBMS_OUTPUT.PUT_LINE('-----   ------');
LOOP
FETCH dyn INTO RDEPTH, RCOUNT;
EXIT WHEN dyn%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(LPAD(RDEPTH, 5, ' ')  || LPAD(RCOUNT, 9, ' '));
END LOOP;
DBMS_OUTPUT.PUT_LINE(' ');
CLOSE dyn;
SLINE := 'SELECT count(*) DCOUNT FROM TABLE(CUBE_TABLE(''' || OLINE || ''')) where DEPTH=0';
DBMS_OUTPUT.PUT_LINE(SLINE);
OPEN dyn FOR SLINE;
DBMS_OUTPUT.PUT_LINE('DCOUNT');
DBMS_OUTPUT.PUT_LINE('------');
LOOP
FETCH dyn INTO RCOUNT;
EXIT WHEN dyn%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(LPAD(RCOUNT, 6, ' '));
END LOOP;
DBMS_OUTPUT.PUT_LINE(' ');
CLOSE dyn;
DBMS_OUTPUT.PUT_LINE(' ');
END LOOP;
END;
END SHOW_CUBE_TABLE_ERROR; ------------------------------------------------------------------------------------------------------------------------------------------------------
I am not alone in noticing this issue. The developers at Simba said they'd seen it too but that it was fixed in the B patch. Any idea when this is available for Windows?
Paul