Interested, yes. But there may be reasons not to do that. Last time I looked the binary format wasn't documented.
Anyway, I tried re-implementing pqGetCopyData3() using the callback. Wasn't hard, but I did have to add a way for the callback to return an error. Kept it pretty dumb for now, hoping a sensible rule will become obvious later.
Saw no obvious performance impact, so that's good.
Jeroen
Jeroen Vermeulen <jtvjtv@gmail.com> writes:
> The printf() is just the simplest example that sprang to mind though.
> There may be other use-cases out there involving libraries that require
> zero-terminated strings, and I figured an ability to set a sentinel could
> help those.
Well, since it won't help for binary COPY, I'm skeptical that this is
something we should cater to. Anybody who's sufficiently worried about
performance to be trying to remove malloc/free cycles ought to be
interested in binary COPY as well.
regards, tom lane