From e07d894990ee94d27b98022c9ffefbe4d585df26 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Wed, 30 May 2001 22:58:00 +0000 Subject: Update FAQ. --- doc/FAQ | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'doc/FAQ') diff --git a/doc/FAQ b/doc/FAQ index 9b8539da9cb..f59d74ff9a3 100644 --- a/doc/FAQ +++ b/doc/FAQ @@ -1,7 +1,7 @@ Frequently Asked Questions (FAQ) for PostgreSQL - Last updated: Tue May 22 17:50:25 EDT 2001 + Last updated: Wed May 30 18:57:52 EDT 2001 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) @@ -709,9 +709,9 @@ Maximum number of indexes on a table? unlimited column statistics on its own, so VACUUM ANALYZE must be run to collect them periodically. - Indexes are usually not used for ORDER BY operations: a sequential - scan followed by an explicit sort is faster than an indexscan of all - tuples of a large table, because it takes fewer disk accesses. + Indexes are usually not used for ORDER BY or joins: a sequential scan + followed by an explicit sort is faster than an indexscan of all tuples + of a large table, because it takes fewer disk accesses. When using wild-card operators such as LIKE or ~, indices can only be used if the beginning of the search is anchored to the start of the -- cgit v1.2.3