Re: [SQL] pg_dump

On Fri, 2005-11-11 at 17:04 -0600, Judith Altamirano Figueroa wrote:
> Hi
>
> how could I restore a db if I did next:
>
> pg_dump -Z 9 soi > $DESTINO/soi.bkp

Since you don't specify any dump format, your dump should be plain text
and is compressed with gzip, so the restore command is going to be:

zcat $DESTINO/soi.bkp | psql -d restore_database_name -f -

You have to create the database to restore into first.

------------------------------------------

[Note for documentation:
According to the psql man page:
-Z 0..9

--compress=0..9
Specify the compression level to use in archive formats that
support compression. (Currently only the custom archive format
supports compression.)

However using psql -Z with no format or with "-F p" in fact produces a
gzipped file.]

This might be a suitable amendment to the docs?:
$ diff -u /tmp/pg_dump.sgml.orig /tmp/pg_dump.sgml
--- /tmp/pg_dump.sgml.orig 2005-11-15 11:50:55.000000000 +0000
+++ /tmp/pg_dump.sgml 2005-11-15 11:57:38.000000000 +0000
@@ -492,8 +492,9 @@
<listitem>
<para>
Specify the compression level to use in archive formats that
- support compression. (Currently only the custom archive
- format supports compression.)
+ support compression. (Currently the tar archive
+ format does not support compression. The plain text format is
+ compressed with gzip.)
</para>
</listitem>
</varlistentry>

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Oliver Elphick olly(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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