Update statement with case statement

Question

Hi
The following code is thorwing an error like
=====CODE==========
BEGIN
UPDATE emp SET SAL = CASE
WHEN ENAME = 'SCOTT' THEN SAL = 300
ELSE NULL;
END CASE;
END;
=====ERROR=======
ORA-06550: line 3, column 32:
PL/SQL: ORA-00905: missing keyword
ORA-06550: line 2, column 2:
PL/SQL: SQL Statement ignored
ORA-06550: line 5, column 6:
PLS-00103: Encountered the symbol "CASE" when expecting one of the following:
; 1.
2. BEGIN
3. UPDATE emp SET SAL = CASE
4. WHEN ENAME = 'SCOTT' THEN SAL = 300
5. ELSE NULL;
Any suggession?
Regards
Balaji

Answer 1

Hi,
Yes you are right, but it is not working for the multiple case statement like the following code
BEGIN
UPDATE emp SET SAL = CASE
WHEN ENAME='JONES' THEN '4';
WHEN ENAME='BLAKE' THEN '5'
WHEN ENAME='CLARK' THEN '6'
WHEN ENAME='TURNER' THEN '7'
WHEN ENAME='MILLER' THEN '8'
WHEN ENAME='MARTIN' THEN '9'
WHEN ENAME='WARD' THEN '10'
WHEN ENAME='ADAMS' THEN '11'
WHEN ENAME='JAMES' THEN '12'
WHEN ENAME='SMITH' THEN '13'
ELSE NULL END;
END;
The above code show the following error
===========ERROR==========
ORA-06550: line 3, column 29:
PL/SQL: ORA-00905: missing keyword
ORA-06550: line 2, column 2:
PL/SQL: SQL Statement ignored
ORA-06550: line 4, column 2:
PLS-00103: Encountered the symbol "WHEN" when expecting one of the following:
( begin case declare end exception exit for goto if loop mod
null pragma raise return select update while with
1. BEGIN
2. UPDATE emp SET SAL = CASE
3. WHEN ENAME='JONES' THEN '4';
4. WHEN ENAME='BLAKE' THEN '5'
5. WHEN ENAME='CLARK' THEN '6'
Regards
Balaji
Edited by: 904493 on Jan 13, 2012 4:18 AM