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mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00

Remove old TODO items. Add some to release.sgml.

This commit is contained in:
Bruce Momjian
2000-04-18 21:18:43 +00:00
parent 1dcf5907c4
commit b1d25149fb
3 changed files with 52 additions and 92 deletions

View File

@ -16,66 +16,32 @@ the directory pgsql/doc/TODO.detail/ under that name.
RELIABILITY
-----------
RESOURCES
* -Disallow inherited columns with the same name as new columns
* -Elog() does not free all its memory
* -spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr
* -Recover or force failure when disk space is exhausted(Hiroshi)
PARSER
* -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
* -Select a[1] FROM test fails, it needs test.a[1](Tom)
* -Array index references without table name cause problems [array](Tom)
* Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas)
* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
* -INSERT ... SELECT ... GROUP BY groups by target columns not source columns(Tom)
* -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT(Tom)
* -UNION with LIMIT fails
* Unique index on base column not honored on inserts from inherited table
INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
[inherit]
* -CREATE TABLE x AS SELECT 1 UNION SELECT 2 fails
* -CREATE TABLE test(col char(2) DEFAULT user) fails in length restriction
* -mismatched types in CREATE TABLE ... DEFAULT causes problems [default]
* -SELECT ... UNION ... ORDER BY fails when sort expr not in result
list, ORDER BY is applied only to the first SELECT
* Be smarter about promoting types when UNION merges different data types
* redesign INSERT ... SELECT to have two levels of target list
* -select * from pg_class where oid in (0,-1)
* have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
* -prevent primary key that exceeds max index columns [primary]
* -SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes
* SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct]
* -require SELECT DISTINCT target list to have all ORDER BY columns
* -When using aggregates + GROUP BY, no rows in should yield no rows out(Tom)
* -Allow HAVING to use comparisons that have no aggregates(Tom)
* -Allow COUNT(DISTINCT col))(TOm)
* SELECT 'x'::varchar(10) INTO newtable; fails
* SELECT col::DECIMAL(12,10); fails
VIEWS
* Views containing aggregates sometimes fail(Jan)
* -Views with spaces in view name fail when referenced
* Creating view and inheriting the view causes view* to show
duplicates(inherit)
* Disallow LOCK on view
MISC
* -User who can create databases can modify pg_database table(Peter E)
* Plpgsql does not handle quoted mixed-case identifiers
* -Fix btree to give a useful elog when key > 1/2 (page - overhead)(Tom)
* -pg_dump should preserve primary key information(Peter E)
* -plpgsql regression tests fails on BSD/OS
* -database names with spaces fail
* -insert of 0.0 into DECIMAL(4,4) field fails(Tom)
* -* Interlock to prevent DROP DATABASE on a database with running backendsInterlock to prevent DROP DATABASE on a database with running backends
* Buffer reference counting bugfixes
* Fix libpq bug that causes it to drop backend error message sent
just before connection closure (ie, any FATAL error message)
@ -91,30 +57,24 @@ ENHANCEMENTS
URGENT
* -Add referential integrity(Jan)[primary]
* Add MATCH PARTIAL referential integrity
* Foreign key does not check that columns referenced form a primary key
or constrained by UNIQUE
* Add OUTER joins, left and right[outer](Thomas, Bruce)
* Allow long tuples by chaining or auto-storing outside db (TOAST)(Jan)
* -Eliminate limits on query length
* Fix memory leak for expressions[memory](Tom?)
* -Fix memory leak for aggregates(Tom)
ADMIN
* -Better interface for adding to pg_group(Peter E)
* More access control over who can create tables and access the database
* Test syslog functionality
* Allow elog() to return error codes, not just messages
* Allow international error message support and add error codes
* -Generate postmaster pid file and remove flock/fcntl lock code[flock](Tatsuo)
* Add ability to specifiy location of lock/socket files [flock]
* Unify configuration into one configuration file
TYPES
* -Add BIT, BIT VARYING
* Nchar (as distinguished from ordinary varchar),
* Domain capability
* Add STDDEV/VARIANCE() function for standard deviation computation/variance
@ -124,23 +84,16 @@ TYPES
o Not to stuff everything as files in a single directory, hash dirs
o Allow large object vacuuming
o Tables that start with xinv confused to be large objects
* -Allow pg_descriptions when creating tables
* -Allow pg_descriptions when creating types, columns, and functions
* Add IPv6 capability to INET/CIDR types
* Make a separate SERIAL type?
* Store binary-compatible type information in the system
* Add support for & operator
* Allow LOCALE on a per-column basis, default to ASCII
* -Allow LOCALE to use indexes in regular expression searches(Tom)
* -Allow array on int8[](Thomas)
* Allow nulls in arrays
* Allow arrays to be ORDER'ed
* Remove Money type, add money formatting for decimal type
* Declare typein/out functions in pg_proc with a special "C string" data type
* Add non-large-object binary field
* -Add index on NUMERIC/DECIMAL type(Jan)
* -Make Absolutetime/Relativetime int4 because time_t can be int8 on some ports
(Peter E)
* Functions returning sets don't really work right[function]
* Make type equivalency apply to aggregates(Peter E.)
@ -154,17 +107,13 @@ INDEXES
* Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops)
fails index can't store constant parameters
* -Allow creation of functional indexes to use default types
* -Permissions on indexes, prevent them(Peter E)
* 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
* ALTER TABLE ADD COLUMN to inherited table put column in wrong place [inherit]
* -Add ALTER TABLE DROP/ALTER COLUMN feature(Peter E)
* Add ALTER TABLE DROP/ALTER COLUMN feature(Peter E)
* Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT
NULL specification, indexes, permissions, etc on table[cluster]
* Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
@ -174,7 +123,6 @@ COMMANDS
* Allow ESCAPE '\' at the end of LIKE for ANSI compliance [like]
* Rewrite the LIKE handling by rewriting the user string with the
supplied ESCAPE [like]
* -Move LIKE index optimization handling to the optimizer(Tom)
* Allow RULE recompilation
* Support UNION/INTERSECT/EXCEPT in sub-selects
* Allow DELETE and UPDATE to use inheritance using tablename*
@ -184,12 +132,7 @@ CLIENTS
* Make NULL's come out at the beginning or end depending on the
ORDER BY direction
* -Allow flag to control COPY input/output of NULLs(Peter E)
* Update reltuples from COPY command
* -Allow psql \copy to allow delimiters(Peter E)
* -Add a function to return the last inserted oid, for use in psql
scripts (Peter E)
* -Allow psql to print nulls as distinct from "" [null](Peter E)
* fix array handling for ECPG
* add pg_dump option to dump type names as standard ANSI types
* allow psql \d to show primary and foreign keys
@ -212,26 +155,18 @@ MISC
* Certain indexes will not shrink, i.e. oid indexes with many inserts(Vadim)
* Restore unused oid's on backend exit if no one else has gotten oids
* Have UPDATE/DELETE clean out indexes
* -Allow WHERE restriction on ctid(Hiroshi)
* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
* Allow DELETE WHERE CURRENT OF cursor
* -Allow PQrequestCancel() to terminate when in waiting-for-lock state
* Transaction log, so re-do log can be on a separate disk by
with after-row images(Vadim) [logging](Vadim)(in-progress)
* 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(Tom)
* Put sort files, large objects in their own directory
* Do autocommit so always in a transaction block(?)
* Show location of syntax error in query [yacc]
* Redesign the function call interface to handle NULLs better[function](Tom)
* -Document/trigger/rule so changes to pg_shadow recreate pg_pwd
[pg_shadow](Peter E.)
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
* -Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
* Overhaul bufmgr/lockmgr/transaction manager
* -Add PL/Perl(Mark Hollomon)
* -Add option for postgres user have a password by default(Peter E)
* Add configure test to check for C++ need for *.h and namespaces
* Allow BLCKSZ <= 64k, not <= 32k
* redesign UNION structures to have separarate target lists
@ -243,34 +178,22 @@ PERFORMANCE
FSYNC
* Allow transaction commits with rollback with no-fsync performance [fsync](Vadim)
* -Prevent fsync in SELECT-only queries(Vadim)
INDEXES
* Use indexes in ORDER BY for min(), max()
* Use index to restrict rows returned by multi-key index when used with
non-consecutive keys or OR clauses, so fewer heap accesses
* -Convert function(constant) into a constant for index use(Bernard Frankpitt)
* Improve LIMIT processing by using index to limit rows processed [limit]
* Have optimizer take LIMIT into account when considering index scans [limit]
* -Make index creation use psort code, because it is now faster(Tom)
* -Allow creation of sort temp tables > 1 Gig
* -Create more system table indexes for faster cache lookups
* -fix indexscan() so it does leak memory by not requiring caller to
free(Tom)
* -Improve _bt_binsrch() to handle equal keys better, remove _bt_firsteq()(Tom)
* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8,
float4, numeric/decimal too [optimizer]
* -Allow optimizer to prefer plans that match ORDER BY(Tom)
* Include heap CTID in btree index keys, remove equal-key cruft from btree
CACHE
* Cache most recent query plan(s) [prepare]
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
* -elog() flushes cache, try invalidating just entries from current xact,
perhaps using invalidation cache
MISC
@ -278,11 +201,9 @@ MISC
* Allow char() not to use variable-sized header to reduce disk size
* Allow char1 data type that takes one byte of storage
* Do async I/O to do better read-ahead of data
* -Fix memory exhaustion when using many OR's [cnfify](Tom)
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available
* Use mmap() rather than SYSV shared memory(?)
* -Process const = const parts of OR clause in separate pass(Bernard Frankpitt)
* Make oid use oidin/oidout not int4in/int4out in pg_type.h
* Improve Subplan list handling
* Allow Subplans to use efficient joins(hash, merge) with upper variable
@ -291,10 +212,7 @@ MISC
places, like GROUP BY, UNIQUE, index processing, etc.
* improve dynamic memory allocation by introducing tuple-context memory
allocation [memory]
* -fix memory leak in cache code when non-existant table is referenced
* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
* -pass atttypmod through parser in more cases [atttypmod]
* -remove duplicate type in/out functions for disk and net
* Allow persistent backends [persistent]
* others [performance]
* prevent labels from being output for stored rules (Tom)
@ -304,11 +222,8 @@ SOURCE CODE
-----------
* Add use of 'const' for variables in source tree
* Fix C optimizer problem where fmgr_ptr calls return different types [alpha]
* -Add needed includes and removed unneeded include files(Bruce)
* -Make configure --enable-debug add -g on compile line(Peter E)
* Does Mariposa source contain any other bug fixes?
* Remove SET KSQO option if OR processing is improved(Tom)
* -Pre-generate lex and yacc output so not required for install(Peter E)
* Use macros to define NT open() file parameters, remove NT-specific defines
* Change CURRENT to OLD internally for rules