From 2b1ccefe720812989e2b9f86508f538342324a39 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Tue, 24 Oct 2006 02:41:22 +0000 Subject: [PATCH] Add URL for: * Speed up COUNT(*) > http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php --- doc/TODO | 3 ++- doc/src/FAQ/TODO.html | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/doc/TODO b/doc/TODO index 47c57d27f6..3fadcd3b5d 100644 --- a/doc/TODO +++ b/doc/TODO @@ -2,7 +2,7 @@ PostgreSQL TODO List ==================== Current maintainer: Bruce Momjian (bruce@momjian.us) -Last updated: Sat Oct 21 13:31:12 EDT 2006 +Last updated: Mon Oct 23 22:41:16 EDT 2006 The most recent version of this document can be viewed at http://www.postgresql.org/docs/faqs.TODO.html. @@ -960,6 +960,7 @@ Cache Usage get a count directly from a unique index, but for this to be faster than a sequential scan it must avoid access to the heap to obtain tuple visibility information. + http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php * Add estimated_count(*) to return an estimate of COUNT(*) diff --git a/doc/src/FAQ/TODO.html b/doc/src/FAQ/TODO.html index 96467374ad..99e1117965 100644 --- a/doc/src/FAQ/TODO.html +++ b/doc/src/FAQ/TODO.html @@ -8,7 +8,7 @@

PostgreSQL TODO List

Current maintainer: Bruce Momjian (bruce@momjian.us)
-Last updated: Sat Oct 21 13:31:12 EDT 2006 +Last updated: Mon Oct 23 22:41:16 EDT 2006

The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html. @@ -867,6 +867,7 @@ first. get a count directly from a unique index, but for this to be faster than a sequential scan it must avoid access to the heap to obtain tuple visibility information. + http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php

  • Add estimated_count(*) to return an estimate of COUNT(*)

    This would use the planner ANALYZE statistics to return an estimated