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Update TODO list.
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doc/TODO

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TODO list for PostgreSQL
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========================
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Last updated: Fri Feb 23 14:38:26 EST 2001
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Last updated: Wed Feb 28 13:03:43 EST 2001
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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@@ -125,6 +125,8 @@ TYPES
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* Make binary/file in/out interface for TOAST columns
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* SELECT cash_out(2) crashes because of opaque
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* Add SQL standard function bit_length()
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* Make oid use unsigned int more reliably, pg_atoi()
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* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
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VIEWS
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@@ -145,6 +147,10 @@ INDEXES
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* Add FILLFACTOR to index creation
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* Re-enable partial indexes
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* Allow inherited tables to inherit index
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* Prevent pg_attribute from having duplicate oids for indexes (Tom)
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* Add UNIQUE capability to non-btree indexes
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* Certain indexes will not shrink, i.e. oid indexes with many inserts (Vadim)
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* Have UPDATE/DELETE clean out indexes
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COMMANDS
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@@ -183,6 +189,9 @@ COMMANDS
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* Add SHOW command to display locks
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* Bring INSERT ... VALUES up to full SQL92 spec, disallow missing
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columns, allow DEFAULT
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* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
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* Allow DELETE WHERE CURRENT OF cursor
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* -redesign UNION structures to have separarate target lists
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CLIENTS
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@@ -239,22 +248,14 @@ MISCELLANEOUS
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* Increase identifier length(NAMEDATALEN) if small performance hit
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* Create a background process for each database that runs while
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database is idle, finding superceeded rows, gathering stats and vacuuming
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* Add UNIQUE capability to non-btree indexes
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* Certain indexes will not shrink, i.e. oid indexes with many inserts (Vadim)
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* Have UPDATE/DELETE clean out indexes
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* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
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* Allow DELETE WHERE CURRENT OF cursor
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* -Transaction log, so re-do log can be on a separate disk by
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with after-row images (Vadim)
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* Transaction log, so re-do log can be on a separate disk with after-row
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images (Vadim)
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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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* Put sort files in their own directory
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* Allow autocommit so always in a transaction block
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* Show location of syntax error in query [yacc]
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* -Redesign the function call interface to handle NULLs better (Tom)
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* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
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* Overhaul bufmgr/lockmgr/transaction manager
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* -redesign UNION structures to have separarate target lists
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* -Use IPC_EXCL when creating shared memory and semaphores (Tom)
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* Encrpyt passwords in pg_shadow table using MD5 (Vince)
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* -Use flock() to prevent multiple postmasters on the same port (Tom)
@@ -268,6 +269,7 @@ PERFORMANCE
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* -Allow transaction commits with rollback with no-fsync performance
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(Vadim)
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* Delay fsync() when other backends are about to commit too [fsync]
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INDEXES
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@@ -280,13 +282,27 @@ INDEXES
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btree (Tom)
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* Use indexes with CIDR '<<' (contains) operator
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* Allow LIKE indexing optimization for non-ASCII locales
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* Be smarter about insertion of already-ordered data into btree index
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* Gather more accurate dispersion statistics using indexes
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* Add deleted bit to index tuples to reduce heap access
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* Prevent index uniqueness checks when UPDATE does not modify column
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CACHE
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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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MISC
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VACUUM
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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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* -Redesign ANALYZE in VACUUM so it can be run separately without locks
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* Make ANALYZE a separate command
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* Allow ANALYZE to ESTIMATE based on certain random precentage of rows
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* Add LAZY VACUUM (Vadim)
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MISCELLANEOUS
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* Allow compression of log and meta data
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* Do async I/O to do better read-ahead of data
@@ -303,28 +319,15 @@ MISC
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* -In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
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* allow configuration of maximum number of open files
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* Remove pg_listener index
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* Gather more accurate dispersion statistics using indexes
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* Improve statistics storage in pg_class [performance]
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* VACUUM
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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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* -Redesign ANALYZE in VACUUM so it can be run separately without locks
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* Make ANALYZE a separate command
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* Allow ANALYZE to ESTIMATE based on certain random precentage of rows
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* Add connection pooling [pool]
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* Allow persistent backends [persistent]
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* Create a transaction processor to aid in persistent connections and
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connection pooling
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* Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
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ANALYZE, and CLUSTER
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* Delay fsync() when other backends are about to commit too [fsync]
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* Prevent pg_attribute from having duplicate oids for indexes (Tom)
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* Force transactions that commit at near the same time use a single fsync()
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* Make blind writes go through the file descriptor cache
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* Add LAZY VACUUM (Vadim)
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* Add deleted bit to index tuples to reduce heap access
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* Prevent index uniqueness checks when UPDATE does not modify column
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SOURCE CODE
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