RelOid_pg_class, and transaction locks XactLockTableId. RelId is renamed
to objId.

- LockObject() and UnlockObject() functions created, and their use
sprinkled throughout the code to do descent locking for domains and
types. They accept lock modes AccessShare and AccessExclusive, as we
only really need a 'read' and 'write' lock at the moment.  Most locking
cases are held until the end of the transaction.

This fixes the cases Tom mentioned earlier in regards to locking with
Domains.  If the patch is good, I'll work on cleaning up issues with
other database objects that have this problem (most of them).

Rod Taylor

Neil Conway

7.3.2).  It removes some code duplication and #ifdeffing, and some
unstructured ugliness such as tacky breaks and an unneeded continue.
Breaks up a large function into smaller functions and reduces required
nesting levels, and kills a variable or two.

Jeroen T. Vermeulen

Oliver Elphick

ltree_73.patch.gz - for 7.3 :
        Fix ~ operation bug: eg '1.1.1' ~ '*.1'

ltree_74.patch.gz - for current CVS
    Fix ~ operation bug: eg '1.1.1' ~ '*.1'
    Add ? operation
    Optimize index storage

Last change needs drop/create all ltree indexes, so only for 7.4

Teodor Sigaev

functions which limited the maximum date for a timestamp to AD 1465001.
The new limit is AD 5874897.
The files affected are:

doc/src/sgml/datatype.sgml:
    Documentation change due to patch. Included is a notice about
    the reduced range when using an eight-byte integer for timestamps.

src/backend/utils/adt/datetime.c:
    Replacement functions for j2date() and date2j() functions.

src/include/utils/datetime.h:
    Corrected a bug with the limit on the earliest possible date,
    Nov 23,-4713 has a Julian day count of -1. The earliest possible
    date should be Nov 24, -4713 with a day count of 0.

src/test/regress/expected/horology-no-DST-before-1970.out:
src/test/regress/expected/horology-solaris-1947.out:
src/test/regress/expected/horology.out:
    Copies of expected output for regression testing.
    Note: Only horology.out has been physically tested. I do not have access
    to a Solaris box and I don't know how to provoke the "pre-1970" test.

src/test/regress/sql/horology.sql:
    Added some test cases to check extended range.

John Cochran

(7.3 and current CVS) with support of int8, float4, float8
in addition to int4. Thanks Janko Richter for contribution.

Oleg Bartunov

additions to the docs.

Neil Conway

performance of min() and max() is slow when applied to the entire table,
and suggesting the simple workaround most experienced Pg users
eventually learn about (SELECT xyz ... ORDER BY xyz LIMIT 1).

Neil Conway

< * Prevent index uniqueness checks when UPDATE does not modifying column
> * Prevent index uniqueness checks when UPDATE does not modify the column
235c235
< 	o Make PL/PgSQL %TYPE schema-aware
> 	o -Make PL/PgSQL %TYPE schema-aware

> * Allow WAL information to recover corrupted pg_controldata

> * Allow pg_dump to dump sequences using NO_MAXVALUE and NO_MINVALUE

known problem with failure to respond to 'pg_ctl stop -m fast', and
probable problems if SIGINT or SIGTERM arrives while processing a
SIGUSR2 interrupt that arrived while waiting for a new client query.

> * Add a script to ask system configuration questions and tune postgresql.conf

consistency.

> * Allow CIDR format to be used in pg_hba.conf

< 	o Allow CLUSTER to cluster all tables (Alvaro Herrera)
> 	o -Allow CLUSTER to cluster all tables (Alvaro Herrera)
243c243
< * Allow pg_dump to dump a specific schema (Neil Conway)
> * -Allow pg_dump to dump a specific schema (Neil Conway)
398c398
< * Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS (Tom)
> * -Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS (Tom)

> 	o -Add ALTER TABLE tab SET WITHOUT OIDS (Rod)

> 	o -Allow CLUSTER to cluster all tables (Alvaro Herrera)

> * -Allow pg_dump to dump a specific schema (Neil Conway)

> * -Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS (Tom)

> * Rod is Rod Taylor <pg@rbt.ca)>

< * -Make a transaction-safe TRUNCATE
> * -Make a transaction-safe TRUNCATE (Rod)

> * -Make a transaction-safe TRUNCATE

in the case where the node immediately above the scan is a Hash, Sort,
or Material node.  In these cases it's better to do the projection
so that we don't store unneeded columns in the hash/sort/materialize
table.  Per discussion a few days ago with Anagh Lal.

that turn into CASE expressions.  They evaluate their arguments at most
once.  Patch by Kris Jurka, review and (very light) editorializing by me.

< * Disallow DROP COLUMN on a column that is part of a multi-column index
> * Require DROP COLUMN CASCADE for a column that is part of a multi-column index

a bad choice between sorted and hashed aggregation.

the outer query.  (The implementation is a bit klugy, but it would take
nontrivial restructuring to make it nicer, which this is probably not
worth.)  This avoids unnecessary sort steps in examples like
SELECT foo,count(*) FROM (SELECT ... ORDER BY foo,bar) sub GROUP BY foo
which means there is now a reasonable technique for controlling the
order of inputs to custom aggregates, even in the grouping case.

> * Disallow DROP COLUMN on a column that is part of a multi-column index

ps for multiple postmasters, for Kevin Brown.

same type in a rule.  Per bug report from Pavel Hanak.