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Re: how to create dump of selected rows from a table

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On 12/17/2015 09:28 AM, anj patnaik wrote:
Currently, I am running pg_dump on an entire table of a database by doing:

  PGPASSWORD=$PGPASSWORDB /opt/data/PostgreSQL/9.4/bin/pg_dump -t
RECORDER -Fc $i -U pguser -Z0 | xz -9 > "$backup_dir/$i-$timeslot-database"

However, this table has a lot of rows.

Is there a way I could do pg_dump on a subset of rows that match a
criteria say via a sql statement?

Yes it is called COPY:):

http://www.postgresql.org/docs/9.4/interactive/sql-copy.html

or its psql equivalent \copy:

http://www.postgresql.org/docs/9.4/interactive/app-psql.html


Does anyone have any snippets on how to do that?

Thank you


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Adrian Klaver
adrian.klaver@xxxxxxxxxxx


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