PG Stats Collector

From: Arvind Singh <arvindps(at)hotmail(dot)com>
To: "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: PG Stats Collector
Date: 2013-05-12 07:30:43
Message-ID: BLU164-W194B8C8093924D14CB066CAA70@phx.gbl
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Hello and greetings,

I need help in understanding the purpose of the following columns produced by PG stats collector in version 9.1

From pg_stat_database
-----------------------------
blks_read,
blks_hit,
_tup_returned,
tup_fetched

Reported In pg_stat_user_tables
-------------------------------------
idx_tup_fetch,
n_tup_hot_upd,
n_live_tup,
n_dead_tup


thank you,
arvind

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