Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Job <> Manager or Clerk Has Null in Comm

Posted on 2008-10-15
8
Medium Priority
?
314 Views
Last Modified: 2013-12-19
Hi,

I want to find emp job ain't manager or clerk.

!=, still doesn't work.

Does null in Comm reflect output? Should Null include SQL?

select empno, ename, deptno, job
from emp
where (job <> 'manager' OR job <> 'clerk')
and deptno = 10;

===========================
/* Table */

EMPNO ENAME      JOB             MGR HIREDATE          SAL       COMM
---------- ---------- --------- ---------- --------- ---------- ----------
    DEPTNO

7698 BLAKE      MANAGER            7839 01-MAY-81         2850
      30

7782 CLARK      MANAGER            7839 09-JUN-81         2450
       10

7900 JAMES      CLERK            7698 03-DEC-81                 950
      30

 7934 MILLER     CLERK            7782 23-JAN-82         1300
      10

========================

Output

 EMPNO ENAME        DEPTNO JOB
---------- ---------- ---------- ---------
      7839 KING             10 PRESIDENT
      7782 CLARK            10 MANAGER
      7934 MILLER            10 CLERK



0
Comment
Question by:suredazzle
  • 5
  • 3
8 Comments
 
LVL 74

Expert Comment

by:sdstuber
ID: 22723872
that's because of the condition  you need AND not OR

any job will either be MANGER or CLERK or neither.

So, every job is <> MANGER or <> CLERK or both.

try this...


select empno, ename, deptno, job
from emp
where job <> 'manager'
AND job <> 'clerk'
and deptno = 10;
0
 
LVL 74

Expert Comment

by:sdstuber
ID: 22723874
you can use !=  instead of <> if you want to
0
 
LVL 1

Author Comment

by:suredazzle
ID: 22724041
Hi Sdstuber,

Tried both ways, still not working.

SQL> select empno, ename, deptno, job
from emp
where job != 'manager'
and job != 'clerk'
and deptno = 10;  2    3    4    5  

     EMPNO ENAME        DEPTNO JOB
---------- ---------- ---------- ---------
      7839 KING             10 PRESIDENT
      7782 CLARK            10 MANAGER
      7934 MILLER            10 CLERK

Not too familiar with Null, it shoud be "Not equal". Right?

Let me see what I find on NULL.

0
Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

 
LVL 74

Expert Comment

by:sdstuber
ID: 22724127
you don't have any nulls though.  if you do care about null then use "IS NULL" or "IS NOT NULL"

in this case you also have case sensitivity, sorry I didn't notice that earlier

clerk != CLERK
manager != MANAGER


SELECT empno, ename, deptno, JOB
FROM emp
WHERE JOB != 'MANAGER'
AND JOB != 'CLERK'
AND deptno = 10;


you could also use not in

SELECT empno, ename, deptno, JOB
FROM emp
WHERE JOB not in ('MANAGER','CLERK')
AND deptno = 10;

0
 
LVL 74

Accepted Solution

by:
sdstuber earned 2000 total points
ID: 22724144
if you want to include NULL's (there aren't any in the scott.emp table though)

it might look like this...


SELECT empno, ename, deptno, JOB
FROM emp
WHERE (JOB not in ('MANAGER','CLERK') or job is null)
AND deptno = 10;
0
 
LVL 1

Author Closing Comment

by:suredazzle
ID: 31506421
Hi Sdstuber,

I used your solution. It works! Thanks very much.

Gosh, it is case sensitive.
0
 
LVL 74

Expert Comment

by:sdstuber
ID: 22724299
glad I could help
0
 
LVL 1

Author Comment

by:suredazzle
ID: 22724312
Hi Sdstuber,

I used your solution. It works! Thanks very much. I learn a lot.

Gosh, it is case sensitive.
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to Create User-Defined Aggregates in Oracle Before we begin creating these things, what are user-defined aggregates?  They are a feature introduced in Oracle 9i that allows a developer to create his or her own functions like "SUM", "AVG", and…
Using SQL Scripts we can save all the SQL queries as files that we use very frequently on our database later point of time. This is one of the feature present under SQL Workshop in Oracle Application Express.
This video shows setup options and the basic steps and syntax for duplicating (cloning) a database from one instance to another. Examples are given for duplicating to the same machine and to different machines
This video shows how to Export data from an Oracle database using the Original Export Utility.  The corresponding Import utility, which works the same way is referenced, but not demonstrated.

963 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question