From a69833c5833cb62beff77248574c1beaadea0734 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 7 Nov 2001 17:27:36 +0000
Subject: [PATCH] Mention new =NULL change in Migration section.
---
HISTORY | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/HISTORY b/HISTORY
index c8e57d75975..ced54708ebf 100644
--- a/HISTORY
+++ b/HISTORY
@@ -37,9 +37,14 @@ several languages.
Migration to 7.2
A dump/restore using pg_dump is required for those wishing to migrate
- data from any previous release. The SELECT ... LIMIT 10,20 syntax will
- be removed in 7.3. You should change your queries to use LIMIT 10
- OFFSET 20. Also, pg_hba.conf only loads on SIGHUP now.
+ data from any previous release. In this release, comparisons using "=
+ NULL" will always return false. Previous releases automatically
+ transformed this syntax to "IS NULL", which is the standards-
+ compliant way to do NULL comparisons. The old behavior can be
+ re-enabled using a postgresql.conf parameter. The SELECT ... LIMIT
+ #,# syntax will be removed in 7.3. You should change your queries to
+ use separate LIMIT and OFFSET clauses, e.g. LIMIT 10 OFFSET 20. Also,
+ pg_hba.conf now only loads on SIGHUP.
--
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