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Doc: clean up pg_relation_check_pages() documentation. 

Commit f2b883969 did not get the memo about the new formatting
style for tables documenting built-in functions.  I noticed because
of a PDF build warning about an overwidth table.
This commit is contained in:
Tom Lane 2020-10-28 17:03:05 -04:00
parent 4c49d8fc15
commit b787d4ce6d
1 changed files with 33 additions and 27 deletions
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60
doc/src/sgml/func.sgml
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@ -26192,44 +26192,50 @@ SELECT convert_from(pg_read_binary_file('file_in_utf8.txt'), 'UTF8');
<table id="functions-data-sanity-table">
<title>Data Sanity Functions</title>
<tgroup cols="3">
<tgroup cols="1">
<thead>
<row><entry>Name</entry> <entry>Return Type</entry> <entry>Description</entry>
<row>
<entry role="func_table_entry"><para role="func_signature">
Function
</para>
<para>
Description
</para></entry>
</row>
</thead>
<tbody>
<row>
<entry>
<literal><function>pg_relation_check_pages(<parameter>relation</parameter> <type>regclass</type> [, <parameter>fork</parameter> <type>text</type> <literal>DEFAULT</literal> <literal>NULL</literal> ])</function></literal>
</entry>
<entry><type>setof record</type></entry>
<entry>Check the pages of a relation.
</entry>
<entry role="func_table_entry"><para role="func_signature">
<indexterm>
<primary>pg_relation_check_pages</primary>
</indexterm>
<function>pg_relation_check_pages</function> ( <parameter>relation</parameter> <type>regclass</type> [, <parameter>fork</parameter> <type>text</type> ] )
<returnvalue>setof record</returnvalue>
( <parameter>path</parameter> <type>text</type>,
<parameter>failed_block_num</parameter> <type>bigint</type> )
</para>
<para>
Checks the pages of the specified relation to see if they are valid
enough to safely be loaded into the server's shared buffers. If
given, <parameter>fork</parameter> specifies that only the pages of
the given fork are to be verified. <parameter>fork</parameter> can
be <literal>main</literal> for the main data
fork, <literal>fsm</literal> for the free space
map, <literal>vm</literal> for the visibility map,
or <literal>init</literal> for the initialization fork. The
default of <literal>NULL</literal> means that all forks of the
relation should be checked. The function returns a list of block
numbers that appear corrupted along with the path names of their
files. Use of this function is restricted to superusers by
default, but access may be granted to others
using <command>GRANT</command>.
</para></entry>
</row>
</tbody>
</tgroup>
</table>
<indexterm>
<primary>pg_relation_check_pages</primary>
</indexterm>
<para id="functions-check-relation-note" xreflabel="pg_relation_check_pages">
<function>pg_relation_check_pages</function> iterates over all blocks of a
given relation and verifies if they are in a state where they can safely
be loaded into the shared buffers. If defined,
<replaceable>fork</replaceable> specifies that only the pages of the given
fork are to be verified. Fork can be <literal>'main'</literal> for the
main data fork, <literal>'fsm'</literal> for the free space map,
<literal>'vm'</literal> for the visibility map, or
<literal>'init'</literal> for the initialization fork. The default of
<literal>NULL</literal> means that all the forks of the relation are
checked. The function returns a list of blocks that are considered as
corrupted with the path of the related file. Use of this function is
restricted to superusers by default but access may be granted to others
using <command>GRANT</command>.
</para>
</sect2>
</sect1>