Re: should we add a XLogRecPtr/LSN SQL type?

On 12 December 2013 12:27, Andres Freund <andres@2ndquadrant.com> wrote:
> On 2013-12-11 08:13:18 -0500, Robert Haas wrote:
>> On Wed, Dec 11, 2013 at 7:41 AM, Andres Freund <andres@2ndquadrant.com> wrote:
>> > There's already a couple of SQL function dealing with XLogRecPtrs and
>> > the logical replication work will add a couple of more. Currently each
>> > of those funtions taking/returning an LSN does sprintf/scanf to
>> > print/parse the strings. Which both is awkward and potentially
>> > noticeable performancewise.
>> >
>> > It seems relatively simple to add a proper type, with implicit casts
>> > from text, instead?
>>
>> I'm pretty sure that this was discussed last year, and I voted for it
>> but more people
>> voted against it, so it died.  I still think that was a mistake, but I
>> just work here.
>
> Ah. I missed or forgot that discussion.

Hmm, don't recall that. Just in case I opposed it, its a good idea now.

-- Simon Riggs                   http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training & Services