From: | "Peter J(dot) Holzer" <hjp-pgsql(at)hjp(dot)at> |
---|---|
To: | pgsql-general(at)lists(dot)postgresql(dot)org |
Subject: | Re: Copying records from TABLE_A to TABLE_B (in the same database) |
Date: | 2022-08-02 19:41:57 |
Message-ID: | 20220802194157.d6uoa5mwtsg2jbd4@hjp.at |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
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
--
_ | Peter J. Holzer | Story must make more sense than reality.
|_|_) | |
| | | hjp(at)hjp(dot)at | -- Charles Stross, "Creative writing
__/ | http://www.hjp.at/ | challenge!"
From | Date | Subject | |
---|---|---|---|
Next Message | Thomas Munro | 2022-08-03 02:49:14 | Re: Strange collation names ("hu_HU.UTF-8") |
Previous Message | Rob Sargent | 2022-08-02 19:08:41 | Re: Copying records from TABLE_A to TABLE_B (in the same database) |