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Mention new =NULL change in Migration section.

This commit is contained in:
Bruce Momjian 2001-11-07 17:27:36 +00:00
parent 75df678ffa
commit a69833c583
1 changed files with 8 additions and 3 deletions
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@ -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.