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Make documentation of pg_restore's -N, -o, -r switches bear some

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slight resemblance to their actual behavior.
This commit is contained in:
Tom Lane 2003-08-28 20:44:02 +00:00
parent 209a8d63df
commit 7e2a4cfe63
1 changed files with 30 additions and 20 deletions
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50
doc/src/sgml/ref/pg_restore.sgml
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@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_restore.sgml,v 1.39 2003/06/11 16:29:42 tgl Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/pg_restore.sgml,v 1.40 2003/08/28 20:44:02 tgl Exp $ -->
<refentry id="APP-PGRESTORE">
<refmeta>
@ -42,8 +42,8 @@
<para>
<application>pg_restore</application> can operate in two modes: If
a database name is specified, the archive is restored directly into
the database. Large objects can only be restored by using a direct
database connection. Otherwise, a script containing the SQL
the database. (Large objects can only be restored by using such a direct
database connection.) Otherwise, a script containing the SQL
commands necessary to rebuild the database is created (and written
to a file or standard output), similar to the ones created by the
<application>pg_dump</application> plain text format. Some of the
@ -228,11 +228,13 @@
<term><option>--orig-order</option></term>
<listitem>
<para>
Restore items in the original dump order. By default
<application>pg_dump</application> will dump items in an order
convenient to <application>pg_dump</application>, then save the
archive in a modified OID order. This option overrides the OID
ordering.
Restore items in the order they were originally generated within
<application>pg_dump</application>. This option has no known
practical use, since <application>pg_dump</application> generates
the items in an order convenient to it, which is unlikely to be a
safe order for restoring them. (This is <emphasis>not</> the order
in which the items are ultimately listed in the archive's table of
contents.) See also <option>-r</>.
</para>
</listitem>
</varlistentry>
@ -242,11 +244,10 @@
<term><option>--oid-order</option></term>
<listitem>
<para>
Restore items in the OID order. By default
<application>pg_dump</application> will dump items in an order
convenient to <application>pg_dump</application>, then save the
archive in a modified OID order. This option enforces strict
OID ordering.
Restore items in order by OID. This option is of limited usefulness,
since OID is only an approximate indication of original creation
order. This option overrides <option>-N</> if both are specified.
See also <option>-r</>.
</para>
</listitem>
</varlistentry>
@ -281,13 +282,22 @@
<term><option>--rearrange</option></term>
<listitem>
<para>
Restore items in modified OID order. By default
<application>pg_dump</application> will dump items in an order
convenient to <application>pg_dump</application>, then save the
archive in a modified OID order. Most objects will be restored
in OID order, but some things (e.g., rules and indexes) will
be restored at the end of the process irrespective of their
OIDs. This option is the default.
Rearrange items by object type (this occurs after the sorting
specified by <option>-N</option> or <option>-o</option>, if
given). The rearrangement is intended to give the best possible
restore performance.
</para>
<para>
When none of <option>-N</option>, <option>-o</option>, and
<option>-r</> appear, <application>pg_restore</application> restores
items in the order they appear in the dump's table of contents,
or in the order they appear in the <REPLACEABLE
CLASS="PARAMETER">list-file</REPLACEABLE> if <option>-L</> is
given. The combination of <option>-o</> and <option>-r</>
duplicates the sorting done by <application>pg_dump</application>
before creating the dump's table of contents,
and so it is normally unnecessary to specify it.
</para>
</listitem>
</varlistentry>