From c28c00ecc8c382d4a1d261abbe4d8aacd54407ef Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Tue, 22 Nov 2005 23:06:56 +0000 Subject: Add: > > * Add estimated_count(*) to return an estimate of COUNT(*) > > This would use the planner ANALYZE statistatics to return an estimated > count. --- doc/src/FAQ/TODO.html | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'doc/src') diff --git a/doc/src/FAQ/TODO.html b/doc/src/FAQ/TODO.html index a3d1050c162..e25b0686515 100644 --- a/doc/src/FAQ/TODO.html +++ b/doc/src/FAQ/TODO.html @@ -8,7 +8,7 @@

PostgreSQL TODO List

Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated: Wed Nov 16 13:44:51 EST 2005 +Last updated: Tue Nov 22 17:53:39 EST 2005

The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html. @@ -762,6 +762,10 @@ 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. +

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

This would use the planner ANALYZE statistatics to return an estimated + count.

Allow data to be pulled directly from indexes

Currently indexes do not have enough tuple visibility information -- cgit v1.2.3