2011/12/2 Merlin Moncure <mmoncure@gmail.com>:
> On Fri, Dec 2, 2011 at 2:01 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
>>>> so bytea_agg - one param aggregate has sense
>>>>
>>>> it's very easy to implement it
>>>
>>> yup:
>>>
>>> create aggregate bytea_agg (bytea)
>>> (
>>> sfunc=byteacat,
>>> stype=bytea
>>> );
>>
>> this is workaround :)
>>
>> without a memory preallocating it has same speed like cycle in plpgsql.
>
> sure, but I prefer to code against the workaround because it's cleaner
> and it makes things easier to port over when such a feature makes it
> into core. also, one liner sql has better chance of inlining as a
> general rule.
ook
Pavel
>
> merlin