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how to written some default value from sql query [message #282018]

Tue, 20 November 2007 07:31

miroconnect@yahoo.com
Messages: 202
Registered: April 2006

Senior Member

I have a simple query
select name from employees where employee_id=5

suppose there was no 5 the query would not return anything
is there a way to return default value in case of no records ?

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Re: how to written some default value from sql query [message #282022 is a reply to message #282018]

Tue, 20 November 2007 07:38

Michel Cadot
Messages: 68761
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

First way:

SQL> select ename from (
  2  select 1 c1, ename from emp where empno=5
  3  union all
  4  select 2 c1, 'default value' from dual
  5  order by c1
  6  )
  7  where rownum=1
  8  /
ENAME
-------------
default value

1 row selected.

Waiting for others... Wink

Regards
Michel

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