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Clarify documention workding for xip_list().

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Simon Riggs
This commit is contained in:
Bruce Momjian 2008-09-07 01:29:36 +00:00
parent 409c144d83
commit 1cfd878643
1 changed files with 9 additions and 6 deletions
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15
doc/src/sgml/func.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.444 2008/09/06 00:01:21 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/func.sgml,v 1.445 2008/09/07 01:29:36 momjian Exp $ -->
<chapter id="functions">
<title>Functions and Operators</title>
@ -12006,11 +12006,14 @@ SELECT pg_type_is_visible('myschema.widget'::regtype);
<row>
<entry><type>xip_list</type></entry>
<entry>
Active txids at the time of the snapshot. All of them are between
<literal>xmin</> and <literal>xmax</>. A txid that is
<literal>xmin &lt;= txid &lt; xmax</literal> and not in this list was
already completed at the time of the snapshot, and thus either visible
or dead according to its commit status.
Active txids at the time of the snapshot. The list
includes only those active txids between <literal>xmin</>
and <literal>xmax</>; there might be active txids higher
than xmax. A txid that is <literal>xmin &lt;= txid &lt;
xmax</literal> and not in this list was already completed
at the time of the snapshot, and thus either visible or
dead according to its commit status. The list does not
include txids of subtransactions.
</entry>
</row>