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REL6_5_PATCHES
Bruce Momjian 27 years ago
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      doc/TODO

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doc/TODO
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TODO list for PostgreSQL
========================
Last updated: Sun Jun 6 22:08:59 EDT 1999
Last updated: Tue Jul 6 05:41:10 EDT 1999
Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
The most recent version of this document can be viewed at
the PostgreSQL WWW site, http://www.postgreSQL.org.
the PostgreSQL web site, http://www.postgreSQL.org.
A dash(-) marks changes to be in the next release.
Developers who have claimed items are:
-------------------------------------
* Billy is Billy G. Allie <Bill.Allie@mug.org>
* Brook is Brook Milligan <brook@trillium.NMSU.Edu>
* Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net>
* David is David Hartwig <daveh@insightdist.com>
* Edmund is Edmund Mergl <E.Mergl@bawue.de>
* Goran is Goran Thyni <goran@kyla.kiruna.se>
* Hiroshi is Hiroshi Inoue<Inoue@tpf.co.jp>
* Jan is Jan Wieck <wieck@sapserv.debis.de>
* Marc is Marc Fournier <scrappy@hub.org>
* Massimo Dal Zotto <dz@cs.unitn.it>
* Michael is Michael Meskes <meskes@debian.org>
* Oleg is Oleg Bartunov <oleg@sai.msu.su>
* Peter is Peter T Mount <peter@retep.org.uk>
* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
* Tom is Tom Lane <tgl@sss.pgh.pa.us>
* Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu>
* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO>
* Vadim is "Vadim B. Mikheev" <vadim@krs.ru>
A dash(-) marks changes that will appear in the next release.
RELIABILITY
-----------
* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
* Overhaul bufmgr/lockmgr/transaction manager
* Remove EXTEND?
* Tables that start with xinv confused to be large objects
* Two and three dimensional arrays display improperly, missing {}
* Select a[1] FROM test fails, it needs test.a[1]
* Update table SET table.value = 3 fails
* User who can create databases can modify pg_database table
RESOURCES
* Elog() does not free all its memory(Jan)
* Disallow inherited columns with the same name as new columns
* spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr
* Recover or force failure when disk space is exhausted
* Views containing aggregates sometimes fail(Jan)
PARSER
* Disallow inherited columns with the same name as new columns
* INSERT INTO ... SELECT with AS columns matching result columns problem
* SELECT pg_class FROM pg_class generates strange error
* Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT
* Do not allow bpchar column creation without length
* Select a[1] FROM test fails, it needs test.a[1]
* Array index references without table name cause problems
* Update table SET table.value = 3 fails
* Creating index of timestamp fails
VIEWS
* Views containing aggregates sometimes fail(Jan)
* Views with spaces in view name fail when referenced
* Plpgsql does not handle quoted mixed-case identifiers
* Do not allow bpchar column creation without length
* INSERT INTO ... SELECT with AS columns matching result columns problem
MISC
* User who can create databases can modify pg_database table
* Plpgsql does not handle quoted mixed-case identifiers
ENHANCEMENTS
------------
URGENT
* Add referential integrity
* Add OUTER joins, left and right(Thomas)
* Allow long tuples by chaining or auto-storing outside db (chaining,large objs)
* Eliminate limits on query length
* Fix memory leak for expressions?, aggregates?
Exotic features:
EXOTIC FEATURES
* Add sql3 recursive unions
* Add the concept of dataspaces
* Add replication of distributed databases
* Allow queries across multiple databases
Admin:
ADMIN
* Better interface for adding to pg_group
* More access control over who can create tables and access the database
* Add syslog functionality
@ -79,45 +69,46 @@ Admin:
* Generate postmaster pid file and remove flock/fcntl lock code
* Add ability to specifiy location of lock/socket files
Types:
TYPES
* Add BIT, BIT VARYING
* Nchar (as distinguished from ordinary varchar),
* Domain capability
* Add STDDEV/VARIANCE() function for standard deviation computation/variance
* Allow compression of large fields or a compressed field type
* Large objects
* Fix large object mapping scheme, own typeid or reltype(Peter)
* Allow large text type to use large objects(Peter)
* Not to stuff everything as files in a single directory
o Fix large object mapping scheme, own typeid or reltype(Peter)
o Allow large text type to use large objects(Peter)
o Not to stuff everything as files in a single directory
* Allow pg_descriptions when creating types, tables, columns, and functions
* Add IPv6 capability to INET/CIDR types
* Make a separate SERIAL type?
* Store binary-compatible type information in the system
* Allow user to define char1 column
* Add support for & operator
* Allow LOCALE on a per-column basis, default to ASCII
* Allow array on int8[]
* Remove Money type, add money formatting for decimal type
VIEWS
Views:
* Allow DISTINCT on views
* Allow views of aggregate columns
* Allow views with subselects
* Allow subqueries in target list
* Put sort files, large objects in their on directory
* Do autocommit so always in a transaction block
* Show location of syntax error in query
* Redesign the function call interface to handle NULLs better(Jan)
* Document/trigger/rule so changes to pg_shadow create pg_pwd
* Missing optimizer selectivities for date, etc.
INDEXES
Indexes:
* Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops)
fails index can't store constant parameters
fails index can't store constant parameters
* Allow creation of functional indexes to use default types
* Permissions on indexes - prevent them?
* Allow SQL function indexes
* Add FILLFACTOR to index creation
* Allow indexing of LIKE with localle character sets
* Allow indexing of more than eight columns
COMMANDS
Commands:
* ALTER TABLE ADD COLUMN to inherited table put column in wrong place
* Add ALTER TABLE DROP/ALTER COLUMN feature
* Allow CLUSTER on all tables at once, and improve CLUSTER
@ -128,18 +119,21 @@ Commands:
* Allow INSERT/UPDATE of system-generated oid value for a row
* Allow ESCAPE '\' at the end of LIKE for ANSI compliance
* Rewrite the LIKE handling by rewriting the user string with the
supplied ESCAPE
supplied ESCAPE
* Move LIKE index optimization handling to the optimizer
Clients:
CLIENTS
* Make NULL's come out at the beginning or end depending on the
ORDER BY direction
ORDER BY direction
* Allow flag to control COPY input/output of NULLs
* Update reltuples from COPY command
* Allow psql \copy to allow delimiters
* Add a function to return the last inserted oid, for use in psql scripts
* Allow psql to print nulls as distinct from ""(?)
MISC
* Increase identifier length(NAMEDATALEN) if small performance hit
* Allow row re-use without vacuum, maybe?(Vadim)
* Add UNIQUE capability to non-btree indexes
@ -152,28 +146,45 @@ Clients:
* Transaction log, so re-do log can be on a separate disk
* Populate backend status area and write program to dump status data
* Make oid use unsigned int more reliably, pg_atoi()
* Allow subqueries in target list
* Put sort files, large objects in their on directory
* Do autocommit so always in a transaction block
* Show location of syntax error in query
* Redesign the function call interface to handle NULLs better(Jan)
* Document/trigger/rule so changes to pg_shadow create pg_pwd
* Missing optimizer selectivities for date, etc.
* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
* Overhaul bufmgr/lockmgr/transaction manager
* Tables that start with xinv confused to be large objects
* Add PL/Perl(Mark Hollomon)
PERFORMANCE
-----------
FSYNC
* Allow transaction commits with rollback with no-fsync performance
* Prevent fsync in SELECT-only queries
INDEXES
* Use indexes in ORDER BY for restrictive data sets, min(), max()
* Pull requested data directly from indexes, bypassing heap data
* Use index to restrict rows returned by multi-key index when used with
non-consecutive keys or OR clauses, so fewer heap accesses
* Use index with constants on functions
non-consecutive keys or OR clauses, so fewer heap accesses
* Convert function(constant) into a constant for index use
* Allow LIMIT ability on single-table queries that have no ORDER BY to use
a matching index
a matching index
* Improve LIMIT processing by using index to limit rows processed
CACHE
* Cache most recent query plan(s?)
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
MISC
* Allow compression of log and meta data
* Update pg_statistic table to remove operator column
* Make index creation use psort code, because it is now faster(Vadim)
@ -181,7 +192,7 @@ PERFORMANCE
* Do async I/O to do better read-ahead of data
* Fix memory exhaustion when using many OR's
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available
when it is available
* Use mmap() rather than SYSV shared memory(?)
* Process const = const parts of OR clause in separate pass
* Make oid use oidin/oidout not int4in/int4out in pg_type.h
@ -190,6 +201,37 @@ PERFORMANCE
* Allow Subplans to use efficient joins(hash, merge) with upper variable
DOCUMENTATION
-------------
SOURCE CODE
-----------
* Add use of 'const' for varibles in source tree
* Fix C optimizer problem where fmgr_ptr calls return different types
---------------------------------------------------------------------------
Developers who have claimed items are:
--------------------------------------
* Billy is Billy G. Allie <Bill.Allie@mug.org>
* Brook is Brook Milligan <brook@trillium.NMSU.Edu>
* Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net>
* David is David Hartwig <daveh@insightdist.com>
* Edmund is Edmund Mergl <E.Mergl@bawue.de>
* Goran is Goran Thyni <goran@kyla.kiruna.se>
* Hiroshi is Hiroshi Inoue<Inoue@tpf.co.jp>
* Jan is Jan Wieck <wieck@sapserv.debis.de>
* Marc is Marc Fournier <scrappy@hub.org>
* Massimo Dal Zotto <dz@cs.unitn.it>
* Michael is Michael Meskes <meskes@postgresql.org>
* Oleg is Oleg Bartunov <oleg@sai.msu.su>
* Peter is Peter T Mount <peter@retep.org.uk>
* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
* Tom is Tom Lane <tgl@sss.pgh.pa.us>
* Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu>
* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO>
* Vadim is "Vadim B. Mikheev" <vadim@krs.ru>

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