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Postgres FD Implementation
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Abuhujair Javed
Postgres FD Implementation
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e921cdb8
Commit
e921cdb8
authored
Feb 28, 2001
by
Bruce Momjian
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Update TODO list.
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e921cdb8
TODO list for PostgreSQL
========================
Last updated:
Fri Feb 23 14:38:26
EST 2001
Last updated:
Wed Feb 28 13:03:43
EST 2001
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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@@ -125,6 +125,8 @@ TYPES
* Make binary/file in/out interface for TOAST columns
* SELECT cash_out(2) crashes because of opaque
* Add SQL standard function bit_length()
* Make oid use unsigned int more reliably, pg_atoi()
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
VIEWS
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@@ -145,6 +147,10 @@ INDEXES
* Add FILLFACTOR to index creation
* Re-enable partial indexes
* Allow inherited tables to inherit index
* Prevent pg_attribute from having duplicate oids for indexes (Tom)
* Add UNIQUE capability to non-btree indexes
* Certain indexes will not shrink, i.e. oid indexes with many inserts (Vadim)
* Have UPDATE/DELETE clean out indexes
COMMANDS
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@@ -183,6 +189,9 @@ COMMANDS
* Add SHOW command to display locks
* Bring INSERT ... VALUES up to full SQL92 spec, disallow missing
columns, allow DEFAULT
* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
* Allow DELETE WHERE CURRENT OF cursor
* -redesign UNION structures to have separarate target lists
CLIENTS
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@@ -239,22 +248,14 @@ MISCELLANEOUS
* Increase identifier length(NAMEDATALEN) if small performance hit
* Create a background process for each database that runs while
database is idle, finding superceeded rows, gathering stats and vacuuming
* Add UNIQUE capability to non-btree indexes
* Certain indexes will not shrink, i.e. oid indexes with many inserts (Vadim)
* Have UPDATE/DELETE clean out indexes
* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
* Allow DELETE WHERE CURRENT OF cursor
* -Transaction log, so re-do log can be on a separate disk by
with after-row images (Vadim)
* Transaction log, so re-do log can be on a separate disk with after-row
images (Vadim)
* Populate backend status area and write program to dump status data
* Make oid use unsigned int more reliably, pg_atoi()
* Put sort files in their own directory
* Allow autocommit so always in a transaction block
* Show location of syntax error in query [yacc]
* -Redesign the function call interface to handle NULLs better (Tom)
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
* Overhaul bufmgr/lockmgr/transaction manager
* -redesign UNION structures to have separarate target lists
* -Use IPC_EXCL when creating shared memory and semaphores (Tom)
* Encrpyt passwords in pg_shadow table using MD5 (Vince)
* -Use flock() to prevent multiple postmasters on the same port (Tom)
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@@ -268,6 +269,7 @@ PERFORMANCE
* -Allow transaction commits with rollback with no-fsync performance
(Vadim)
* Delay fsync() when other backends are about to commit too [fsync]
INDEXES
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@@ -280,13 +282,27 @@ INDEXES
btree (Tom)
* Use indexes with CIDR '<<' (contains) operator
* Allow LIKE indexing optimization for non-ASCII locales
* Be smarter about insertion of already-ordered data into btree index
* Gather more accurate dispersion statistics using indexes
* Add deleted bit to index tuples to reduce heap access
* Prevent index uniqueness checks when UPDATE does not modify column
CACHE
* Cache most recent query plan(s) (Karel) [prepare]
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
MISC
VACUUM
* Improve speed with indexes (perhaps recreate index instead) [vacuum]
* Reduce lock time by moving tuples with read lock, then write
lock and truncate table [vacuum]
* -Redesign ANALYZE in VACUUM so it can be run separately without locks
* Make ANALYZE a separate command
* Allow ANALYZE to ESTIMATE based on certain random precentage of rows
* Add LAZY VACUUM (Vadim)
MISCELLANEOUS
* Allow compression of log and meta data
* Do async I/O to do better read-ahead of data
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@@ -303,28 +319,15 @@ MISC
* -In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
* allow configuration of maximum number of open files
* Remove pg_listener index
* Gather more accurate dispersion statistics using indexes
* Improve statistics storage in pg_class [performance]
* VACUUM
* Improve speed with indexes (perhaps recreate index instead) [vacuum]
* Reduce lock time by moving tuples with read lock, then write
lock and truncate table [vacuum]
* -Redesign ANALYZE in VACUUM so it can be run separately without locks
* Make ANALYZE a separate command
* Allow ANALYZE to ESTIMATE based on certain random precentage of rows
* Add connection pooling [pool]
* Allow persistent backends [persistent]
* Create a transaction processor to aid in persistent connections and
connection pooling
* Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
ANALYZE, and CLUSTER
* Delay fsync() when other backends are about to commit too [fsync]
* Prevent pg_attribute from having duplicate oids for indexes (Tom)
* Force transactions that commit at near the same time use a single fsync()
* Make blind writes go through the file descriptor cache
* Add LAZY VACUUM (Vadim)
* Add deleted bit to index tuples to reduce heap access
* Prevent index uniqueness checks when UPDATE does not modify column
SOURCE CODE
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