On Tue, 5 May 2020 at 14:50, pinker <pinker@xxxxxxx> 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
