Difference Between (MINUS and NOT IN ) conditions

Hi all,
I am using oracle 10gR2 on AIX.
I am running a sql query and getting some strange results from this.
Select dw_cell_id
from cell_sites cs
where cs.valid_flg = 'Y'
and cs.dw_cell_id not in
(select distinct dm.dw_cell_id
from cell_sites_dim dm)
Above query is returning zero records. Note that DW_CELL_ID column is number data type.
When I use MINUS condition instead of NOT IN it return me few records.
select dw_cell_id
from cell_sites cs
where cs.valid_flg = 'Y'
minus
select distinct dm.dw_cell_id
from cell_sites_dim dm
Can any one tell me whats the difference between these two scenarios. Why i am unable to get the results from first statement.
Thanks
Farooq

Hi all,
I am using oracle 10gR2 on AIX.
I am running a sql query and getting some strange
results from this.
Select dw_cell_id
from cell_sites cs
where cs.valid_flg = 'Y'
and cs.dw_cell_id not in
(select distinct dm.dw_cell_id
from cell_sites_dim dm)In this query, check that you are using "AND" operator. This means it will check for tha correctness of both the conditions. This will return only that row which has valid_flg='Y' and its dw_cell_id is not in cell_sites_dim.... ANd there may be no such records matching both the conditions.
When I use MINUS condition instead of NOT IN it
return me few records.
select dw_cell_id
from cell_sites cs
here cs.valid_flg = 'Y'
minus
select distinct dm.dw_cell_id
from cell_sites_dim dm
------------------------------------------------In this,, you are using "Minus". In this firstly first query will fetch records having valid_flag='Y' and fromthose record it will minus the record which are in cell_sites_dim. So there can be records in cell_sites which have valid_flag='Y' but thay are not in cell_sites_dim.
hope you get the point.
There in symentic error in you query nothing else.
regards,
Navneet
>
Can any one tell me whats the difference between
these two scenarios. Why i am unable to get the
results from first statement.
Thanks
FarooqHI

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     7839 KING       PRESIDENT           17-NOV-81       100                  10
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     7901 SMITH      CLERK          7902 17-DEC-80       100                  20
     7566 JONES      MANAGER        7839 02-APR-81       100                  20
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     7876 ADAMS      CLERK          7788 23-MAY-87       100                  20
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     7499 ALLEN      SALESMAN       7698 20-FEB-81       100       300        30
     7521 WARD       SALESMAN       7698 22-FEB-81       100       500        30
     7654 MARTIN     SALESMAN       7698 28-SEP-81       100      1400        30
     7698 BLAKE      MANAGER        7839 01-MAY-81       100                  30
     7844 TURNER     SALESMAN       7698 08-SEP-81       100         0        30
     7900 JAMES      MANAGER        7698 03-DEC-81       100                  30
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Table truncated.
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6 When Deptno=30 Then
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     7782 CLARK      MANAGER        7839 09-JUN-81       100                  10
     7839 KING       PRESIDENT           17-NOV-81       100                  10
     7934 MILLER     CLERK          7782 23-JAN-82       100                  10
     7999 ABCDEFGH   JOB            7839 09-FEB-06       100         0        10
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    EMPNO ENAME      JOB             MGR HIREDATE        SAL      COMM    DEPTNO
     7901 SMITH      CLERK          7902 17-DEC-80       100                  20
     7566 JONES      MANAGER        7839 02-APR-81       100                  20
     7788 SCOTT      ANALYST        7566 19-APR-87       100                  20
     7876 ADAMS      CLERK          7788 23-MAY-87       100                  20
     7902 FORD       ANALYST        7566 03-DEC-81       100                  20
      123                                                                     20
6 rows selected.
SQL> Select * From Research;
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     7499 ALLEN      SALESMAN       7698 20-FEB-81       100       300        30
     7521 WARD       SALESMAN       7698 22-FEB-81       100       500        30
     7654 MARTIN     SALESMAN       7698 28-SEP-81       100      1400        30
     7698 BLAKE      MANAGER        7839 01-MAY-81       100                  30
     7844 TURNER     SALESMAN       7698 08-SEP-81       100         0        30
     7900 JAMES      MANAGER        7698 03-DEC-81       100                  30
6 rows selected.Both inserting insert the same records then whats the difference between ALL and FIRST clause in multi insert DML
Khurram Siddiqui
[email protected]

Hello
From the docs:
ALL
If you specify ALL, then Oracle evaluates each WHEN clause regardless of the results of the evaluation of any other WHEN clause. For each WHEN clause whose condition evaluates to true, Oracle executes the corresponding INTO clause list.
FIRST
If you specify FIRST, then Oracle evaluates each WHEN clause in the order in which it appears in the statement. For the first WHEN clause that evaluates to true, Oracle executes the corresponding INTO clause and skips subsequent WHEN clauses for the given row.
ELSE clause
For a given row, if no WHEN clause evaluates to true:
* If you have specified an ELSE clause, then Oracle executes the INTO clause list associated with the ELSE clause.
* If you did not specify an else clause, then Oracle takes no action for that row.
See Also:
"Multitable Inserts: Examples"
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* Plan stability is not supported for multitable insert statements.
* The subquery of the multitable insert statement cannot use a sequence.
So given this the following example shows the difference:
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2 /
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2 /
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SQL>
SQL> SELECT * from dt_test_insert_1
2 /
        ID
         1
         2
         3
         4
         5
         6
         7
         8
         9
        10
        11
        12
        13
        14
        15
15 rows selected.
SQL> SELECT * from dt_test_insert_2
2 /
        ID
        10
        11
        12
        13
        14
        15
        16
        17
        18
        19
        20
11 rows selected.
SQL>
SQL> TRUNCATE TABLE dt_test_insert_1
2 /
Table truncated.
SQL> TRUNCATE TABLE dt_test_insert_2
2 /
Table truncated.
SQL>
SQL> INSERT FIRST
2     WHEN rownum <=15 THEN
3             INTO dt_test_insert_1 (id)
4     WHEN rownum >=10 THEN --This condition is ignored until the value of id is > 15
5             INTO dt_test_insert_2 (id)
6 SELECT
7     ID
8 FROM
9     dt_test_insert_base
10 /
20 rows created.
SQL> SELECT * from dt_test_insert_1
2 /
        ID
         1
         2
         3
         4
         5
         6
         7
         8
         9
        10
        11
        12
        13
        14
        15
15 rows selected.
SQL> SELECT * from dt_test_insert_2
2 /
        ID
        16
        17
        18
        19
        20HTH
David

Difference Between (MINUS and NOT IN ) conditions

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