Substitute Field Values Case Statement

Hey,
I need help with a CASE Statement to display certain field values based on another field value.
This is the data in table DEPT
DEPTNO       DNAME              LOC
10               ACCOUNTING     NEW YORK
20               RESEARCH         DALLAS
30               SALES               CHICAGO
40               OPERATIONS     BOSTONThis is my select statement.
SELECT DEPTNO, DNAME,
(CASE LOC
    WHEN 'NEW YORK' THEN ''
--WHEN LOC = 'NEW YORK' THEN DEPTNO = ''
--WHEN LOC = 'NEW YORK' THEN DNAME = ''
END) AS LOC
FROM DEPTWhen I uncomment out the two lines I get an error message. The results are
DEPTNO       DNAME              LOC
10               ACCOUNTING     -
20               RESEARCH         -
30               SALES               -
40               OPERATIONS     -I do not want to clear all the values for LOC. I would like to display no values for DEPTNO and DNAME if LOC = 'NEW YORK'. Has anyone ever done this before?
Correct Results...
DEPTNO       DNAME              LOC
-                  -                      NEW YORK
20               RESEARCH         DALLAS
30               SALES               CHICAGO
40               OPERATIONS     BOSTON

Like this?
SQL> ed
Wrote file afiedt.buf
1 SELECT CASE WHEN LOC != 'NEW YORK' THEN DEPTNO END AS DEPTNO
2        ,CASE WHEN LOC != 'NEW YORK' THEN DNAME END AS DEPTNO
3        ,LOC
4* FROM DEPT
SQL> /
    DEPTNO DEPTNO         LOC
                          NEW YORK
        20 RESEARCH       DALLAS
        30 SALES          CHICAGO
        40 OPERATIONS     BOSTON
        50 IT SUPPORT     LONDON
SQL>

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Edited by: Varsha on Nov 28, 2010 6:23 PM

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