On Tue, 5 May 2020 at 14:50, pinker <pinker@onet.eu> wrote:
> So it would need to run inside single transaction to cause lock, right? do
> you know if pgbench is opening transaction?
The TRUNCATE and COPY are done in the same transaction. You can see
the code in https://github.com/postgres/postgres/blob/REL_11_6/src/bin/pgbench/pgbench.c#L3599
David