On 01/13/2014 04:20 PM, Jim Nasby wrote:
> On 1/13/14, 5:57 PM, Josh Berkus wrote:
>> I *really* don't want to go through all my old code to find places where
>> I used SELECT ... INTO just to pop off the first row, and ignored the
>> rest. I doubt anyone else does, either.
>
> Do you regularly have use cases where you actually want just one RANDOM
> row? I suspect the far more likely scenario is that people write code
> assuming they'll get only one row and they'll end up with extremely hard
> to trace bugs if that assumption is ever wrong.
Regularly? No. But I've seen it, especially as part of a "does this
query return any rows?" test. That's not the best way to test that, but
that doesn't stop a lot of people doing it.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
