Re: pg_dump

[Holger Jakobs <holger@xxxxxxxxxx>]

Am 12.08.24 um 21:09 schrieb Wasim Devale:
> Hi All
>
> Please let me know if the below option persists while using pg_dump 
> command:
>
> -t table_name --exclude-column column_name
>
> I have a table with a column having bytea data type (BLOBS). I just 
> want to exclude this in the dump file as it is of 99GB but I want the 
> other data in the same table which is of only 22MB.
>
> Please let me know any work around this.
>
> I used this option in pg_dump but that didn't work:
>
> --exclude-table-data = table_name
>
> PG version 12.19
>
> Thanks,
> Wasim
No, pg_dump can only dump complete tables.

An alternative would be exporting the result of a select command via 
COPY or \copy to a file, which can easily be read again with COPY or \copy

COPY is an SQL command and has to be used by a superuser because it 
writes to (or reads from) a file on the server.
\copy is a psql command and thus can only be executed in psql (not any 
other client) and by any user, because it writes to (or reads from) a 
file on the client computer.

Kind Regards,

Holger

--

Holger Jakobs, Bergisch Gladbach

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