2012/12/21 Marko Tiikkaja <pgmail@joh.to>:
> On 12/21/12 4:49 PM, I wrote:
>>
>> On 12/21/12 4:39 PM, Tom Lane wrote:
>>>
>>> What is the use-case for this?
>>
>>
>> Currently, the way to do this would be something like:
>
>
> I realize I didn't really answer the question.
>
> The use case is when you're UPDATEing or DELETEing a row and you want to
> quickly assert that there should be exactly one row. For example, if you've
> previously locked a row with SELECT .. FOR UPDATE, and now you want to
> UPDATE or DELETE it, it better be there (or you have a bug somewhere).
>
yes, it has sense
probably only after keyword it should be simple implementable
Regards
Pavel
>
>
> Regards,
> Marko Tiikkaja
>
>
>
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