Add new TODO file to CVS tree.
This commit is contained in:
Bruce Momjian
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doc/TODO
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doc/TODO
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TODO list for PostgreSQL
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========================
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Last updated: Sun Jun 6 22:08:59 EDT 1999
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Last updated: Tue Jul 6 05:41:10 EDT 1999
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Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
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The most recent version of this document can be viewed at
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the PostgreSQL WWW site, http://www.postgreSQL.org.
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the PostgreSQL web site, http://www.postgreSQL.org.
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A dash(-) marks changes to be in the next release.
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Developers who have claimed items are:
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-------------------------------------
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* Billy is Billy G. Allie <Bill.Allie@mug.org>
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* Brook is Brook Milligan <brook@trillium.NMSU.Edu>
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* Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
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* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
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* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net>
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* David is David Hartwig <daveh@insightdist.com>
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* Edmund is Edmund Mergl <E.Mergl@bawue.de>
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* Goran is Goran Thyni <goran@kyla.kiruna.se>
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* Hiroshi is Hiroshi Inoue<Inoue@tpf.co.jp>
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* Jan is Jan Wieck <wieck@sapserv.debis.de>
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* Marc is Marc Fournier <scrappy@hub.org>
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* Massimo Dal Zotto <dz@cs.unitn.it>
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* Michael is Michael Meskes <meskes@debian.org>
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* Oleg is Oleg Bartunov <oleg@sai.msu.su>
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* Peter is Peter T Mount <peter@retep.org.uk>
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* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
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* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
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* Tom is Tom Lane <tgl@sss.pgh.pa.us>
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* Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu>
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* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO>
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* Vadim is "Vadim B. Mikheev" <vadim@krs.ru>
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A dash(-) marks changes that will appear in the next release.
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RELIABILITY
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-----------
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* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
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* Overhaul bufmgr/lockmgr/transaction manager
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* Remove EXTEND?
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* Tables that start with xinv confused to be large objects
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* Two and three dimensional arrays display improperly, missing {}
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* Select a[1] FROM test fails, it needs test.a[1]
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* Update table SET table.value = 3 fails
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* User who can create databases can modify pg_database table
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* Elog() does not free all its memory(Jan)
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* Disallow inherited columns with the same name as new columns
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* Recover or force failure when disk space is exhausted
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* Views containing aggregates sometimes fail(Jan)
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* Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT
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* Array index references without table name cause problems
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* Views with spaces in view name fail when referenced
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* Plpgsql does not handle quoted mixed-case identifiers
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* Do not allow bpchar column creation without length
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* INSERT INTO ... SELECT with AS columns matching result columns problem
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RESOURCES
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* Elog() does not free all its memory(Jan)
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* spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr
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* Recover or force failure when disk space is exhausted
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PARSER
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* Disallow inherited columns with the same name as new columns
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* INSERT INTO ... SELECT with AS columns matching result columns problem
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* SELECT pg_class FROM pg_class generates strange error
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* Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT
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* Do not allow bpchar column creation without length
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* Select a[1] FROM test fails, it needs test.a[1]
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* Array index references without table name cause problems
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* Update table SET table.value = 3 fails
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* Creating index of timestamp fails
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VIEWS
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* Views containing aggregates sometimes fail(Jan)
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* Views with spaces in view name fail when referenced
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MISC
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* User who can create databases can modify pg_database table
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* Plpgsql does not handle quoted mixed-case identifiers
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ENHANCEMENTS
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------------
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URGENT
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* Add referential integrity
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* Add OUTER joins, left and right(Thomas)
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* Allow long tuples by chaining or auto-storing outside db (chaining,large objs)
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* Eliminate limits on query length
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* Fix memory leak for expressions?, aggregates?
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Exotic features:
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EXOTIC FEATURES
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* Add sql3 recursive unions
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* Add the concept of dataspaces
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* Add replication of distributed databases
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* Allow queries across multiple databases
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Admin:
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ADMIN
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* Better interface for adding to pg_group
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* More access control over who can create tables and access the database
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* Add syslog functionality
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@ -79,45 +69,46 @@ Admin:
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* Generate postmaster pid file and remove flock/fcntl lock code
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* Add ability to specifiy location of lock/socket files
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Types:
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TYPES
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* Add BIT, BIT VARYING
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* Nchar (as distinguished from ordinary varchar),
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* Domain capability
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* Add STDDEV/VARIANCE() function for standard deviation computation/variance
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* Allow compression of large fields or a compressed field type
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* Large objects
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* Fix large object mapping scheme, own typeid or reltype(Peter)
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* Allow large text type to use large objects(Peter)
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* Not to stuff everything as files in a single directory
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o Fix large object mapping scheme, own typeid or reltype(Peter)
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o Allow large text type to use large objects(Peter)
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o Not to stuff everything as files in a single directory
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* Allow pg_descriptions when creating types, tables, columns, and functions
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* Add IPv6 capability to INET/CIDR types
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* Make a separate SERIAL type?
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* Store binary-compatible type information in the system
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* Allow user to define char1 column
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* Add support for & operator
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* Allow LOCALE on a per-column basis, default to ASCII
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* Allow array on int8[]
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* Remove Money type, add money formatting for decimal type
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VIEWS
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Views:
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* Allow DISTINCT on views
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* Allow views of aggregate columns
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* Allow views with subselects
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* Allow subqueries in target list
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* Put sort files, large objects in their on directory
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* Do autocommit so always in a transaction block
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* Show location of syntax error in query
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* Redesign the function call interface to handle NULLs better(Jan)
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* Document/trigger/rule so changes to pg_shadow create pg_pwd
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* Missing optimizer selectivities for date, etc.
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INDEXES
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Indexes:
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* Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops)
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fails index can't store constant parameters
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* Allow creation of functional indexes to use default types
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* Permissions on indexes - prevent them?
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* Allow SQL function indexes
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* Add FILLFACTOR to index creation
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* Allow indexing of LIKE with localle character sets
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* Allow indexing of more than eight columns
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COMMANDS
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Commands:
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* ALTER TABLE ADD COLUMN to inherited table put column in wrong place
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* Add ALTER TABLE DROP/ALTER COLUMN feature
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* Allow CLUSTER on all tables at once, and improve CLUSTER
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@ -131,7 +122,8 @@ Commands:
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supplied ESCAPE
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* Move LIKE index optimization handling to the optimizer
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Clients:
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CLIENTS
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* Make NULL's come out at the beginning or end depending on the
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ORDER BY direction
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* Allow flag to control COPY input/output of NULLs
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@ -140,6 +132,8 @@ Clients:
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* Add a function to return the last inserted oid, for use in psql scripts
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* Allow psql to print nulls as distinct from ""(?)
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MISC
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* Increase identifier length(NAMEDATALEN) if small performance hit
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* Allow row re-use without vacuum, maybe?(Vadim)
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* Add UNIQUE capability to non-btree indexes
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@ -152,28 +146,45 @@ Clients:
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* Transaction log, so re-do log can be on a separate disk
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* Populate backend status area and write program to dump status data
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* Make oid use unsigned int more reliably, pg_atoi()
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* Allow subqueries in target list
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* Put sort files, large objects in their on directory
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* Do autocommit so always in a transaction block
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* Show location of syntax error in query
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* Redesign the function call interface to handle NULLs better(Jan)
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* Document/trigger/rule so changes to pg_shadow create pg_pwd
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* Missing optimizer selectivities for date, etc.
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* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
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* Overhaul bufmgr/lockmgr/transaction manager
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* Tables that start with xinv confused to be large objects
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* Add PL/Perl(Mark Hollomon)
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PERFORMANCE
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-----------
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FSYNC
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* Allow transaction commits with rollback with no-fsync performance
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* Prevent fsync in SELECT-only queries
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INDEXES
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* Use indexes in ORDER BY for restrictive data sets, min(), max()
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* Pull requested data directly from indexes, bypassing heap data
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* Use index to restrict rows returned by multi-key index when used with
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non-consecutive keys or OR clauses, so fewer heap accesses
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* Use index with constants on functions
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* Convert function(constant) into a constant for index use
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* Allow LIMIT ability on single-table queries that have no ORDER BY to use
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a matching index
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* Improve LIMIT processing by using index to limit rows processed
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CACHE
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* Cache most recent query plan(s?)
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* Shared catalog cache, reduce lseek()'s by caching table size in shared area
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MISC
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* Allow compression of log and meta data
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* Update pg_statistic table to remove operator column
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* Make index creation use psort code, because it is now faster(Vadim)
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@ -190,6 +201,37 @@ PERFORMANCE
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* Allow Subplans to use efficient joins(hash, merge) with upper variable
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DOCUMENTATION
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-------------
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SOURCE CODE
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-----------
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* Add use of 'const' for varibles in source tree
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* Fix C optimizer problem where fmgr_ptr calls return different types
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---------------------------------------------------------------------------
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Developers who have claimed items are:
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--------------------------------------
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* Billy is Billy G. Allie <Bill.Allie@mug.org>
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* Brook is Brook Milligan <brook@trillium.NMSU.Edu>
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* Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
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* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
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* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net>
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* David is David Hartwig <daveh@insightdist.com>
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* Edmund is Edmund Mergl <E.Mergl@bawue.de>
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* Goran is Goran Thyni <goran@kyla.kiruna.se>
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* Hiroshi is Hiroshi Inoue<Inoue@tpf.co.jp>
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* Jan is Jan Wieck <wieck@sapserv.debis.de>
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* Marc is Marc Fournier <scrappy@hub.org>
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* Massimo Dal Zotto <dz@cs.unitn.it>
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* Michael is Michael Meskes <meskes@postgresql.org>
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* Oleg is Oleg Bartunov <oleg@sai.msu.su>
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* Peter is Peter T Mount <peter@retep.org.uk>
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* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
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* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
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* Tom is Tom Lane <tgl@sss.pgh.pa.us>
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* Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu>
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* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO>
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* Vadim is "Vadim B. Mikheev" <vadim@krs.ru>
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