From f002dc3d4d6600a4095daf83a9584f19d0bd5844 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Mon, 2 Sep 2013 14:38:12 -0400
Subject: [PATCH] Fix relfrozenxid query in docs to include TOAST tables.
The original query ignored TOAST tables which could result in tables
needing a vacuum not being reported.
Backpatch to all live branches.
---
doc/src/sgml/maintenance.sgml | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml
index c34ca534087..b5a58c2f954 100644
--- a/doc/src/sgml/maintenance.sgml
+++ b/doc/src/sgml/maintenance.sgml
@@ -534,7 +534,12 @@
examine this information is to execute queries such as:
<programlisting>
-SELECT relname, age(relfrozenxid) FROM pg_class WHERE relkind IN ('r', 'm');
+SELECT c.oid::regclass as table_name,
+ greatest(age(c.relfrozenxid),age(t.relfrozenxid)) as age
+FROM pg_class c
+LEFT JOIN pg_class t ON c.reltoastrelid = t.oid
+WHERE c.relkind IN ('r', 'm');
+
SELECT datname, age(datfrozenxid) FROM pg_database;
</programlisting>
--
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