mirror of https://github.com/postgres/postgres
Remove ENHANCEMENTS section, move subsections up.
This commit is contained in:
Bruce Momjian
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03296fc980
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doc/TODO
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doc/TODO
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@ -1,6 +1,6 @@
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TODO list for PostgreSQL
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========================
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Last updated: Fri Feb 1 11:59:54 EST 2002
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Last updated: Sun Feb 3 14:23:58 EST 2002
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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@ -12,10 +12,8 @@ A dash (-) marks changes that will appear in the upcoming 7.3 release.
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Bracketed items "[]" have more detailed.
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ENHANCEMENTS
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------------
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URGENT
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------
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* Add replication of distributed databases [replication]
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o automatic failover
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@ -29,7 +27,9 @@ URGENT
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* Point-in-time data recovery using backup and write-ahead log
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* Allow row re-use without vacuum (Tom)
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REPORTING
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---------
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* Allow elog() to return error codes, module name, file name, line
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number, not just messages (Peter E)
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@ -38,7 +38,9 @@ REPORTING
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only if client exists (Bruce)
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* Show location of syntax error in query [yacc]
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PERMISSIONS
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-----------
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* Improve control over user privileges, including table creation and
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lock use [privileges] (Karel, others)
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@ -49,7 +51,9 @@ PERMISSIONS
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* Make single-user local access permissions the default (Peter E)
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* Use thread-safe crypt() in libpq, if available
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ADMIN
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-----
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* Incremental backups
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* Make it easier to create a database owned by someone who can't createdb,
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@ -64,7 +68,9 @@ ADMIN
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* Prevent SIGHUP and 'pg_ctl reload' from changing command line
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specified parameters to postgresql.conf defaults
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DATA TYPES
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----------
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* Add domain capability [domain]
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* Add IPv6 capability to INET/CIDR types
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@ -94,7 +100,9 @@ DATA TYPES
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interface (force out-of-line storage and no compression)
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o Auto-delete large objects when referencing row is deleted
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MULTI-LANGUAGE SUPPORT
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----------------------
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* Add NCHAR (as distinguished from ordinary varchar),
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* Allow LOCALE on a per-column basis, default to ASCII
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@ -105,7 +113,9 @@ MULTI-LANGUAGE SUPPORT
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* Add octet_length_server() and octet_length_client() (Thomas, Tatsuo)
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* Make octet_length_client the same as octet_length() (?)
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VIEWS / RULES
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-------------
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* Automatically create rules on views so they are updateable, per SQL92 [view]
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* Add the functionality for WITH CHECK OPTION clause of CREATE VIEW
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@ -115,7 +125,9 @@ VIEWS / RULES
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* Allow RULE recompilation
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* Remove brackets as multi-statement rule grouping, must use parens
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INDEXES
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-------
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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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@ -146,7 +158,9 @@ INDEXES
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* Improve concurrency in GIST
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* Add FILLFACTOR to index creation
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COMMANDS
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--------
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* Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
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* Add BETWEEN ASYMMETRIC/SYMMETRIC
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@ -219,7 +233,9 @@ COMMANDS
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o Add plsh server-side shell language (Peter E)
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o Allow Java server-side programming (?) [java]
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CLIENTS
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-------
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* Have pg_dump use LEFT OUTER JOIN in multi-table SELECTs
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or multiple SELECTS to avoid bad system catalog entries
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@ -254,7 +270,9 @@ CLIENTS
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o Add SQLSTATE
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o fix handling of DB attributes that are arrays
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REFERENTIAL INTEGRITY
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---------------------
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* Add MATCH PARTIAL referential integrity [foreign]
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* Add deferred trigger queue file (Jan)
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@ -267,7 +285,9 @@ REFERENTIAL INTEGRITY
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in array
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* Fix foreign key constraints to not error on intermediate db states (Stephan)
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DEPENDENCY CHECKING
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-------------------
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* Add pg_depend table for dependency recording; use sysrelid, oid,
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depend_sysrelid, depend_oid, name
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@ -281,13 +301,17 @@ DEPENDENCY CHECKING
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* Make constraints clearer in dump file
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* Make foreign keys easier to identify
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TRANSACTIONS
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------------
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* Allow autocommit so always in a transaction block
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* Overhaul bufmgr/lockmgr/transaction manager
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* Allow savepoints / nested transactions [transactions]
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EXOTIC FEATURES
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---------------
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* Add sql3 recursive unions
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* Add the concept of dataspaces/tablespaces [tablespaces]
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@ -300,17 +324,20 @@ EXOTIC FEATURES
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PERFORMANCE
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-----------
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===========
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FSYNC
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-----
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* Delay fsync() when other backends are about to commit too [fsync]
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o Determine optimal commit_delay value
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* Determine optimal fdatasync/fsync, O_SYNC/O_DSYNC options
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o Allow multiple blocks to be written to WAL with one write()
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CACHE
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CACHE
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-----
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* Cache most recent query plan(s) (Karel) [prepare]
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* Shared catalog cache, reduce lseek()'s by caching table size in shared area
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* Add free-behind capability for large sequential scans (Bruce)
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@ -318,14 +345,18 @@ CACHE
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* Consider use of open/fcntl(O_DIRECT) to minimize OS caching
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* Make blind writes go through the file descriptor cache
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VACUUM
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------
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* Improve speed with indexes (perhaps recreate index instead) [vacuum]
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* Reduce lock time by moving tuples with read lock, then write
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lock and truncate table [vacuum]
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* Add LAZY VACUUM (Vadim) [performance]
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LOCKING
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-------
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* Make locking of shared data structures more fine-grained
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* Add code to detect an SMP machine and handle spinlocks accordingly
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@ -333,7 +364,9 @@ LOCKING
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in client/common/cpucheck.cpp
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* Research use of sched_yield() for spinlock acquisition failure
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STARTUP TIME
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------------
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* Experiment with multi-threaded backend [thread]
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* Add connection pooling [pool]
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@ -343,8 +376,11 @@ STARTUP TIME
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* Do listen() in postmaster and accept() in pre-forked backend
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* Have pre-forked backend pre-connect to last requested database or pass
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file descriptor to backend pre-forked for matching database
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* Cache system catalog information in per-database files (Tom)
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WRITE-AHEAD LOG
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---------------
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* Have after-change WAL write()'s write only modified data to kernel
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* Reduce number of after-change WAL writes; they exist only to gaurd against
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@ -357,7 +393,9 @@ WRITE-AHEAD LOG
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* Add checkpoint_min_warning postgresql.conf option to warn about checkpoints
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that are too frequent
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OPTIMIZER/EXECUTOR
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OPTIMIZER / EXECUTOR
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--------------------
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* Improve Subplan list handling
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* Allow Subplans to use efficient joins(hash, merge) with upper variable
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@ -373,7 +411,9 @@ OPTIMIZER/EXECUTOR
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* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
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* Allow ORDER BY ... LIMIT to select top values without sort or index
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MISCELLANEOUS
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-------------
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* Do async I/O for faster random read-ahead of data
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* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
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@ -382,7 +422,8 @@ MISCELLANEOUS
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SOURCE CODE
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-----------
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===========
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* Add use of 'const' for variables in source tree
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* Fix problems with libpq non-blocking/async code [async]
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* Make sure all block numbers are unsigned to increase maximum table size
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