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Mention new =NULL change in Migration section.

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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 Migration to 7.2
A dump/restore using pg_dump is required for those wishing to migrate 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 data from any previous release. In this release, comparisons using "=
be removed in 7.3. You should change your queries to use LIMIT 10 NULL" will always return false. Previous releases automatically
OFFSET 20. Also, pg_hba.conf only loads on SIGHUP now. 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.