Updatiog two column of one table ?

Question

Hi Guys
i am Learning Oracle sql
when am going to update 'place' of two members it does not updating, here is the querry
employee Table
EMPNO   EMPNAME       JOB            SALARY   PLACE
1           san              employee       25000     africa
2           tan              employee       30000     Africa
3           pan              employee       35000     Africa
4           sony            employee        40000     africai want to update place of employee san and sony
i tried ths
NOT WORKING
sql> update employee
       set place = 'Africa'
       where empno = 1 and empno = 4;
0 rows updated WORKING
sql> update employee
       set place = 'Africa'
       where empname like 's%';
2 rows updatedwhy 1st one is not working ?
thanks
Edited by: 978976 on Dec 27, 2012 9:43 PM
Edited by: 978976 on Dec 27, 2012 9:52 PM
Edited by: 978976 on Dec 27, 2012 9:55 PM
Edited by: 978976 on Dec 27, 2012 9:57 PM
Edited by: 978976 on Dec 27, 2012 9:57 PM

Answer 1

978976 wrote:
i did just like wat u saidThanks for the information.
However the update statement you fired is incorrect, hence it did not update the rows:
update employee
       set place = 'Africa'
       where empno = 1 and empno = 4;You cannot have an empno to be 1 and 4 at the same time.
I think you wanted to update place to Africa for Employees with EMPNO as 1 and 4.
Below will do the job for you:
update employee
       set place = 'Africa'
       where empno IN (1, 4);
This is same as saying
update employee
       set place = 'Africa'
       where empno =1 or empno = 4;