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Clarify pg_dump -b documentation

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The documentation around the -b/--blobs option to pg_dump seemed to
imply that it might be possible to add blobs to a "schema-only" dump or
similar.  Clarify that blobs are data and therefore will only be
included in dumps where data is being included, even when -b is used to
request blobs be included.

The -b option has been around since before 9.2, so back-patch to all
supported branches.

Discussion: https://postgr.es/m/20161119173316.GA13284@tamriel.snowman.net
This commit is contained in:
Stephen Frost 2016-11-29 10:35:12 -05:00
parent ac1d9dbcbe
commit be0b98fc21
1 changed files with 5 additions and 2 deletions
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7
doc/src/sgml/ref/pg_dump.sgml
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@ -132,8 +132,11 @@ PostgreSQL documentation
<para>
Include large objects in the dump. This is the default behavior
except when <option>--schema</>, <option>--table</>, or
<option>--schema-only</> is specified, so the <option>-b</>
switch is only useful to add large objects to selective dumps.
<option>--schema-only</> is specified. The <option>-b</>
switch is therefore only useful to add large objects to dumps
where a specific schema or table has been requested. Note that
blobs are considered data and therefore will be included when
--data-only is used, but not when --schema-only is.
</para>
</listitem>
</varlistentry>