Find the unmatched rows in table.

Question

hello guys I need a little help writing  a sql statement that would basically point out the rows that don't have a corresponding negative matching number, based on my_id,report_id.
Here is the table declaration for better explanation.
CREATE TABLE ."TEST"
   ( "REPORT_ID" VARCHAR2(100 BYTE),
"AMOUNT" NUMBER(17,2),
"MY_ID" VARCHAR2(30 BYTE),
"FUND" VARCHAR2(20 BYTE),
"ORG" VARCHAR2(20 BYTE)
here is some sample data.
REM INSERTING into TEST
SET DEFINE OFF;
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',50,'910','100000','67120');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',-50,'910','100000','67130');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',100,'910','100000','67150');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('2',200,'910','100000','67130');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('2',-200,'910','100000','67120');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',200,'910','100000','67140');
if you create the table and look closely ,  you'll notice that by report_id and my_id most positive amounts have a direct negative amount. In the other hand, I need to identify those positive amounts that do not have a corresponding negative amount by my_id , and report_id.
here is what the expected outcome should look like.
"REPORT_ID"                   "AMOUNT"                      "MY_ID"                       "FUND"                        "ORG"                    
"1"                           "100"                         "910"                         "100000"                      "67150"                  
"1"                           "200"                         "910"                         "100000"                      "67140"                 
please refrain from commenting on the table structure this is simply a sample table I created to explain my problem, my real problem is with a much bigger table.
Thanks in advance for any help you guys can offer.
Miguel

Answer 1

No problem .. I corrected my logic .. the ABS logic doesn't work if you have 2 rows with same amount (I added another test case: report_id = 4)
CREATE TABLE TEST
   ( REPORT_ID VARCHAR2(100 BYTE),
AMOUNT NUMBER(17,2),
MY_ID VARCHAR2(30 BYTE),
FUND VARCHAR2(20 BYTE),
ORG VARCHAR2(20 BYTE)
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',50,'910','100000','67120');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',-50,'910','100000','67130');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',100,'910','100000','67150');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('2',200,'910','100000','67130');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('2',-200,'910','100000','67120');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('1',200,'910','100000','67140');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('3',50,'910','100000','67150');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('3',-50,'910','100000','67160');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('3',50,'910','100000','67170');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('4',40,'910','100000','67150');
Insert into TEST (REPORT_ID,AMOUNT,MY_ID,FUND,ORG) values ('4',40,'910','100000','67160');
with w_base as (
   select report_id, amount, my_id, fund, org,
          sum(amount) over (partition by report_id, abs(amount)) amt_cnt,
          row_number() over (partition by report_id, abs(amount) order by org) rid,
          abs(amount) absamt
     from test
Select distinct report_id, abs(amount), my_id, fund, org, amt_cnt
  from w_base
where amt_cnt != 0
  and rid = 1
order by report_id
REPORT_ID  ABS(AMOUNT) MY_ID      FUND                 ORG                     AMT_CNT
1                  100 910        100000               67150                       100
1                  200 910        100000               67140                       200
3                   50 910        100000               67150                        50
4                   40 910        100000               67150                        80
4 rows selected.
Message was edited by: Greg.Spall
Sorry, posted to quick .. fixed