Select clause inside a Procedure with cursor

Question

Good Moring guys,
I run into a problem that is giving me serious troubles.... I have a Select clause:
              SELECT count(*)
             FROM TD004_ENT_ORGAO_UO TD004
             WHERE TD004.CODG_ENTIDADE = 1121742
             AND TD004.NUMR_ANO_EXERCICIO = 2011
             AND TD004.CODG_ORGAO = 02
             AND TD004.CODG_UO = 001
My table is empty and this query returns a count = 0, so far so good but, when I'm using this same query inside a Procedure that implements a cursor, I'm implementing a way of controling when to or not insert the records of this cursor in my table:
OPEN cDIMENSAO;
LOOP
       FETCH cDIMENSAO INTO EXERCICIO, CODG_ORGAO, NOME_ORGAO, CODG_UO, NOME_UO, CODG_ENTIDADE, SK_ENTIDADE;
       EXIT WHEN cDIMENSAO%NOTFOUND;
       begin
             v_count := 0;
             SELECT count(*) into V_COUNT
             FROM TD004_ENT_ORGAO_UO TD004
             WHERE TD004.CODG_ENTIDADE = CODG_ENTIDADE
             AND TD004.NUMR_ANO_EXERCICIO = EXERCICIO
             AND TD004.CODG_ORGAO = CODG_ORGAO
             AND TD004.CODG_UO = CODG_UO;
             IF V_COUNT = 0 THEN
                INSERT INTO APLIC.TD004_ENT_ORGAO_UO(SK_ENT_ORGAO_UO, NUMR_ANO_EXERCICIO, CODG_ORGAO, NOME_ORGAO, CODG_UO, NOME_UO, CODG_ENTIDADE, SK_ENTIDADE, DATA_CARGA)
                VALUES (APLIC.SK004_ENT_ORGAO_UO.NEXTVAL, EXERCICIO, CODG_ORGAO, NOME_ORGAO, CODG_UO, NOME_UO,CODG_ENTIDADE,SK_ENTIDADE,v_data_carga);
                COMMIT;
             END IF;
The problem occurs here, my v_count controler just returns 1 even if the record isnt inside my table, is like the Where clasue is being ignored. What can be done ??
I'm using the Oracle XE 11g.
Thnks all.

Answer 1

See below. Where clause will never ignore any condition
Note: you need handle null values  specially
SQL>
SQL> select * from v$version;
BANNER                                                                         
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production   
PL/SQL Release 11.2.0.2.0 - Production                                         
CORE 11.2.0.2.0 Production                                                     
TNS for Linux: Version 11.2.0.2.0 - Production                                 
NLSRTL Version 11.2.0.2.0 - Production                                         
SQL>
SQL> set serveroutput on;
SQL>
SQL> DECLARE
  2     CURSOR c1
  3     IS
  4        WITH dmn
  5             AS (SELECT 1 col1, 'TEST' col2, NULL col3 FROM DUAL
  6             UNION ALL
  7                 SELECT 2 col1, 'TESTING' col2, 'COL3' col3 FROM DUAL
  8              UNION ALL
  9                 SELECT 3 col1, 'TESTING123' col2, 'COL3' col3 FROM DUAL
10                )
11        SELECT *
12          FROM dmn;
13 
14     v_col1    VARCHAR2 (10);
15     v_col2    VARCHAR2 (10);
16     v_col3    VARCHAR2 (10);
17     v_count   NUMBER;
18  BEGIN
19     OPEN c1;
20 
21     LOOP
22        FETCH c1
23        INTO v_col1, v_col2, v_col3;
24        EXIT WHEN c1%NOTFOUND;
25 
26           WITH txn
27             AS (SELECT 1 col1, 'TEST' col2, NULL col3 FROM DUAL
28                 UNION ALL
29                 SELECT 2 col1, 'TESTING' col2, 'COL3' col3 FROM DUAL
30                )
31        SELECT COUNT (*)
32          INTO v_count
33          FROM txn
34         WHERE  col1 = v_col1
35               AND col2 = v_col2
36               AND nvl(col3,'##') = nvl(v_col3, '##');
37 
38           DBMS_OUTPUT.put_line ('V_count = ' || v_count);
39        IF v_count = 0
40        THEN
41           DBMS_OUTPUT.put_line ('Insert is processed for ' || v_col1);
42        ELSE
43           DBMS_OUTPUT.put_line ('Insert is Ignored for ' || v_col1);
44        END IF;
45        v_count := 0;
46     END LOOP;
47  END;
48  /
V_count = 1                                                                    
Insert is Ignored for 1                                                        
V_count = 1                                                                    
Insert is Ignored for 2                                                        
V_count = 0                                                                    
Insert is processed for 3                                                      
PL/SQL procedure successfully completed.
Thanks,
GPU