John Coers <coers@intrinsity.com> writes:
> Does a COPY FROM block? In case I am using the wrong terminology,
> what I need to know is if I have multiple clients performing COPY FROM...PQputline()
> using asynchronous connections, will I lose data?
No.
> Will the server simply execute them serially?
They'll be executed in parallel, just the same as if each client had
done a bunch of INSERTs wrapped in a BEGIN/END block. You'd only see
problems if clients inserted conflicting data (eg, identical keys in
a column with a UNIQUE index). You may care to read the documentation
about multi-version concurrency control and locking.
regards, tom lane
