RE: Always return at least one value

From: <Stephen.Lee_at_DTAG.Com>
Date: Fri, 19 Mar 2004 10:45:35 -0600
Message-ID: <D6339830FC73944E889CC3CEADDB205B0790929E@bu-dtagpo1.tracs.com>

Yeah. I was hoping I could avoid that additional select to check the existence of the character in the table. With all the new functions that keep popping up in Oracle SQL, I was hoping maybe there was one that was like: If no rows then return this thing, otherwise give me the rows.

> -----Original Message-----
>
> How about this:
> select field from table where field='LITERAL'
> union all
> select '-' from dual
> where not exists(select field from table where field='LITERAL');
>
> I think that ought to do it....
>
> -Mark
>

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Received on Fri Mar 19 2004 - 10:41:58 CST