On 10/19/2012 09:05 PM, Robert Haas wrote:
> On Fri, Oct 19, 2012 at 6:05 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> It's hard to visualize a use for this except for testing purposes, but
>> that might be sufficient reason to have it. One thing that would be
>> pretty cool is to be able to run the regression tests in extended
>> protocol.
> Yes, indeed. We came up with an even grottier hack to do this
> internally for our fork and found a couple of bugs. It appears, for
> example, that the extended protocol exercises copyfuncs/equalfuncs
> support a bit better than the simple protocol, and that's certainly
> something that would be good to exercise regularly.
>
> What I think is a bit insidious about this whole thing is that the
> libpq documentation is not very clear about which functions use the
> simple protocol and which ones use the extended protocol; it basically
> treats that as an internal implementation detail. And in theory it
> should be, but there are significant performance differences between
> the two and, as we're now finding out, they're not bug-compatible
> either. So +1 from me on finding a way to make the regression tests
> run under the extended protocol. If we do that, we should certainly
> make sure the buildfarm does it regularly, because otherwise it's
> quite likely to get broken again without anyone noticing.
Put this feature in psql and I'll try to take care of the rest.
cheers
andrew
