On 2018-06-07 20:34:39 +0100, Simon Riggs wrote: > On 7 June 2018 at 20:27, Tom Lane <t...@sss.pgh.pa.us> wrote: > > Simon Riggs <si...@2ndquadrant.com> writes: > >> If we're going to compress the protocol, it seems sensible to remove > >> extraneous information first. > > > > Breaking the wire protocol was nowhere in this thread. > > No, it wasn't. But there is another thread on the subject of > compressing libpq, which is what I was referring to. > > Andres' patch is clearly very efficient at adding the SELECT tag. I am > questioning if we can remove that need altogether.
That'd be a wire protocol break. We'd have to add compatibilities for both things in the client, wait a couple years, and then change. Or we could make it an optional thing based on a client option passed at connect. Which'd also take a good while. Those seem extremely disproportionate complicated solutions for the problem. Nor can I believe that a "SELECT " in the resultset is a meaningful space issue, making it even worthwhile to break compat in the first place. Greetings, Andres Freund
