> Are there any work done, or plans for implementing asynchronous
> execution in psqlodbc?
Not sure about future plans, but there is nothing stopping you from opening thread in your app and running odbc call
thatway.
> Does anyone have an idea if this is difficult to implement?
defer to experts.
> Does libpq support asynchronous calls?
yes:
http://www.postgresql.org/docs/8.1/interactive/libpq-async.html
If you have deep requirements and/or are extremely speed concerned (and are not concerned about portability), you may
wantto make direct use of liqpq api.
Merlin