From 7d0492f33737f29ff2b4267020bde726104a754f Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Mon, 2 Sep 2013 14:36:24 -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 84b452d16d4..e9b8f97ae53 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 = 'r';
+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 = 'r';
+
SELECT datname, age(datfrozenxid) FROM pg_database;
</programlisting>
--
GitLab