On Fri, 2007-18-05 at 11:47 -0500, Jim C. Nasby wrote:
> Assuming the concurrent psql stuff gets in, do you still see a use for
> this?

I think concurrent psql (and/or async libpq) is the right way to handle
this sort of requirement. "DROP INDEX NOWAIT" is hacky, and would be
difficult (impossible?) to implement in a reasonable manner: the backend
is fundamentally single-threaded. Also, how does the client learn when
the DROP INDEX actually finishes? The client would either need to poll
the database, or we'd need to implement something like select() --
neither is a very appealing alternative.

-1 from me: this functionality belongs on the client-side, where
asynchronous operations are much easier to manage.


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