On 2022-08-02 13:08:41 -0600, Rob Sargent wrote: > If you can get outside sql, the bulk copy facilities (CopyManager in > java) is blindingly fast for me. > > > ?? > > > I meant using tools other than sql (and psql). I have java code using > org.postgresql.copy package
I don't know that package but I'm pretty sure it's just using the
PostgreSQL COPY command.
> because straight insert was too slow for large numbers of rows.
The OP already has the data in the database. In my experience[1] copying
from one table to another is quite a bit faster that copying into the
database (and therefore also copying out AND copying in).
hp
[1]
https://github.com/hjp/dbbench/blob/master/import_pg_comparison/results/akran.2019-12-15/results.png
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