SUM WITHOUT GROUP CLAUSE

Question

I want to sum the total of Positive Balances and Negative Balances in table. My DDL is as under:-
CREATE TABLE LUQMAN
(ID NUMBER(1),
AMOUNT NUMBER(5));
INSERT INTO LUQMAN VALUES(1,20000);
INSERT INTO LUQMAN VALUES(1,-2000);
INSERT INTO LUQMAN VALUES(1,5000);
INSERT INTO LUQMAN VALUES(1,20000);
INSERT INTO LUQMAN VALUES(1,2300);
INSERT INTO LUQMAN VALUES(2,-50000);
INSERT INTO LUQMAN VALUES(2,-2000);
INSERT INTO LUQMAN VALUES(2,5000);
INSERT INTO LUQMAN VALUES(2,20000);
INSERT INTO LUQMAN VALUES(2,2300);
INSERT INTO LUQMAN VALUES(3,20000);
INSERT INTO LUQMAN VALUES(3,-2000);
INSERT INTO LUQMAN VALUES(3,5000);
INSERT INTO LUQMAN VALUES(3,20000);
INSERT INTO LUQMAN VALUES(3,2300);
INSERT INTO LUQMAN VALUES(4,-50000);
INSERT INTO LUQMAN VALUES(4,-2000);
INSERT INTO LUQMAN VALUES(4,5000);
INSERT INTO LUQMAN VALUES(4,20000);
INSERT INTO LUQMAN VALUES(4,2300);
COMMIT;
The query should return One Row Answer as under:-
POSITIVE NEGATIVE
90600 -47100
I tried following but could not got the correct answer.
SELECT CASE WHEN ID IN (1,2,3,4)
AND SUM(AMOUNT)>0 THEN SUM(AMOUNT) ELSE 0 END POSITIVE,
CASE WHEN ID IN (1,2,3,4)
AND SUM(AMOUNT)<0 THEN SUM(AMOUNT) ELSE 0 END NEGATIVE
FROM LUQMAN;
Any Idea please, how to return above One Single Row ? I want one cumulative balance, not by ID Group.
Thanks and Regards,
Luqman

Answer 1

SQL> ed
Wrote file afiedt.buf
  1  select sum(positive),sum(negative) from
  2  (
  3  select case when sign(amount)=1 then amount end positive,
  4  case when sign(amount)=-1 then amount end negative from LUQMAN
  5* )
SQL> /
SUM(POSITIVE) SUM(NEGATIVE)
       149200       -108000
SQL> SELECT * FROM LUQMAN
  2  /
        ID     AMOUNT
         1      20000
         1      -2000
         1       5000
         1      20000
         1       2300
         2     -50000
         2      -2000
         2       5000
         2      20000
         2       2300
         3      20000
        ID     AMOUNT
         3      -2000
         3       5000
         3      20000
         3       2300
         4     -50000
         4      -2000
         4       5000
         4      20000
         4       2300
20 rows selected.
luqman123 wrote:Hi,
Your query returning wrong total.Can you check your inserts again ...
HTH