On Wed, Feb 12, 2020 at 09:25:05AM +0000, PG Doc comments form wrote: > The following documentation comment has been logged on the website: > > Page: https://www.postgresql.org/docs/12/populate.html > Description: > > I think this could be clearer. In particular, performance of COPY vs INSERT > from a query (INSERT INTO ... SELECT FROM ...) or INSERT with a list of rows > (INSERT INTO ... VALUES (), (), (), ...) > Is there any performance benefit with COPY in those cases?
COPY input/outputs rows in bulk, so it is still faster to do COPY than INSERT INTO ... SELECT FROM or INSERT INTO ... VALUES. You can run tests to prove it. -- Bruce Momjian <br...@momjian.us> https://momjian.us EnterpriseDB https://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Ancient Roman grave inscription +
