postgres/doc/TODO

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TODO list for PostgreSQL
========================
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Last updated: Thu Jul 27 14:51:15 EDT 2000
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Current maintainer: Bruce Momjian (pgman@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 web site, http://www.PostgreSQL.org.
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A dash(-) marks changes that will appear in the upcoming 7.1 release.
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Names in brackets "[]" indicate more detailed information is available in
the directory pgsql/doc/TODO.detail/ under that name.
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RELIABILITY
-----------
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PARSER
* 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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* -Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas)
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* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
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* Unique index on base column not honored on inserts from inherited table
INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
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[inherit]
1999-07-21 03:05:50 +04:00
* Be smarter about promoting types when UNION merges different data types
1999-07-21 01:43:18 +04:00
* redesign INSERT ... SELECT to have two levels of target list
1999-08-05 05:53:35 +04:00
* have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
2000-01-16 10:05:35 +03:00
* SELECT col::DECIMAL(12,10); fails
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VIEWS
* Views containing aggregates sometimes fail(Jan)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <HTML> <HEAD> <TITLE>PostgreSQL TODO list</TITLE> <BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#FF0000" VLINK="#A00000"\ ALINK="#0000FF"> <META NAME="generator" CONTENT="txt2html v1.25"> </HEAD> <BODY> <H1><A NAME="section-1">TODO list for PostgreSQL</A></H1> Last updated: Tue Sep 28 00:34:21 EDT 1999 <P> Current maintainer: Bruce Momjian (<A HREF="mailto:maillist@candle.pha.pa.us">maillist@candle.pha.pa.us</A>) <P> The most recent version of this document can be viewed at<BR> the PostgreSQL web site, <A HREF="http://www.PostgreSQL.org">http://www.PostgreSQL.org</A>. <P> A dash(-) marks changes that will appear in the next release. <P> Names in brackets "[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/"></A>]" indicate more detailed information is available in<BR> the directory pgsql/doc/TODO.detail/ under that name. <H2><A NAME="section-1.1">RELIABILITY</A></H2> <P> <STRONG>RESOURCES</STRONG> <UL> <LI> Elog() does not free all its memory(Jan) <LI> spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr <LI> Recover or force failure when disk space is exhausted </UL> <P> <STRONG>PARSER</STRONG> <UL> <LI> Disallow inherited columns with the same name as new columns <LI> INSERT INTO ... SELECT with AS columns matching result columns problem <LI> SELECT pg<U>class FROM pg</U>class generates strange error <LI> Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT <LI> Do not allow bpchar column creation without length <LI> -Select a[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/1">1</A>] FROM test fails, it needs test.a[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/1">1</A>] <LI> -Array index references without table name cause problems [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/array">array</A>] <LI> Update table SET table.value = 3 fails(SQL standard says this is OK) <LI> Creating index of TIMESTAMP &amp; RELTIME fails, or rename to DATETIME(Thomas) <LI> SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo <LI> -INSERT ... SELECT ... GROUP BY groups by target columns not source columns <LI> -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT <LI> UNION with LIMIT fails <LI> Unique index on base column not honored on inserts from inherited table INSERT INTO inherit_table (unique<U>index</U>col) VALUES (dup) should fail [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/inherit">inherit</A>] <LI> CREATE TABLE x AS SELECT 1 UNION SELECT 2 fails <LI> CREATE TABLE test(col char(2) DEFAULT user) fails in length restriction <LI> mismatched types in CREATE TABLE ... DEFAULT causes problems [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/default">default</A>] <LI> SELECT ... UNION ... ORDER BY fails when sort expr not in result list <LI> Be smarter about promoting types when UNION merges different data types <LI> SELECT ... UNION ... GROUP BY fails if column types disagree <LI> redesign INSERT ... SELECT to have two levels of target list <LI> -select * from pg_class where oid in (0,-1) <LI> have INTERSECT/EXCEPT prevent duplicates unless ALL is specified <LI> prevent primary key of nine columns [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/primary">primary</A>] <LI> SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes <LI> SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/distinct">distinct</A>] <LI> -When using aggregates + GROUP BY, no rows in should yield no rows out </UL> <P> <STRONG>VIEWS</STRONG> <UL> <LI> Views containing aggregates sometimes fail(Jan) <LI> Views with spaces in view name fail when referenced <LI> Creating view and inheriting the view causes view* to show duplicates(inherit) </UL> <P> <STRONG>MISC</STRONG> <UL> <LI> User who can create databases can modify pg_database table <LI> Plpgsql does not handle quoted mixed-case identifiers <LI> Fix btree to give a useful elog when key &gt; 1/2 (page - overhead) <LI> pg_dump should preserve primary key information <LI> plpgsql regression tests fail on BSD/OS </UL> <H2><A NAME="section-1.2">ENHANCEMENTS</A></H2> <P> <STRONG>URGENT</STRONG> <UL> <LI> Add referential integrity(Jan?)[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/primary">primary</A>] <LI> Add OUTER joins, left and right[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/outer">outer</A>](Thomas, Bruce) <LI> Allow long tuples by chaining or auto-storing outside db (chaining,large objs) <LI> Eliminate limits on query length <LI> Fix memory leak for expressions?[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/memory">memory</A>](Tom?) <LI> -Fix memory leak for aggregates? </UL> <P> <STRONG>ADMIN</STRONG> <UL> <LI> Better interface for adding to pg_group <LI> More access control over who can create tables and access the database <LI> Test syslog functionality <LI> Allow elog() to return error codes, not just messages <LI> Allow international error message support and add error codes <LI> Generate postmaster pid file and remove flock/fcntl lock code [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/flock">flock</A>] <LI> Add ability to specifiy location of lock/socket files [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/flock">flock</A>] </UL> <P> <STRONG>TYPES</STRONG> <UL> <LI> Add BIT, BIT VARYING <LI> Nchar (as distinguished from ordinary varchar), <LI> Domain capability <LI> Add STDDEV/VARIANCE() function for standard deviation computation/variance <LI> Allow compression of large fields or a compressed field type <LI> Large objects <UL> <LI> Fix large object mapping scheme, own typeid or reltype(Peter) <LI> Allow large text type to use large objects(Peter) <LI> Not to stuff everything as files in a single directory, hash dirs <LI> Allow large object vacuuming <LI> Tables that start with xinv confused to be large objects </UL> <LI> Allow pg_descriptions when creating types, tables, columns, and functions <LI> Add IPv6 capability to INET/CIDR types <LI> Make a separate SERIAL type? <LI> Store binary-compatible type information in the system <LI> Allow user to define char1 column <LI> Add support for &amp; operator <LI> Allow LOCALE on a per-column basis, default to ASCII <LI> Allow array on int8[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/"></A>] <LI> Allow nulls in arrays <LI> Allow arrays to be ORDER'ed <LI> Remove Money type, add money formatting for decimal type <LI> Declare typein/out functions in pg_proc with a special "C string" data type <LI> Add non-large-object binary field <LI> Add index on NUMERIC/DECIMAL type <LI> Make Absolutetime/Relativetime int4 because time_t can be int8 on some ports <LI> Functions returning sets don't really work right[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/function">function</A>] </UL> <P> <STRONG>VIEWS</STRONG> <UL> <LI> Allow DISTINCT on views <LI> Allow views of aggregate columns <LI> Allow views with subselects </UL> <P> <STRONG>INDEXES</STRONG> <UL> <LI> Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops) fails index can't store constant parameters <LI> Allow creation of functional indexes to use default types <LI> Permissions on indexes - prevent them? <LI> Allow SQL function indexes <LI> Add FILLFACTOR to index creation <LI> Allow indexing of LIKE with localle character sets <LI> Allow indexing of more than eight columns </UL> <P> <STRONG>COMMANDS</STRONG> <UL> <LI> ALTER TABLE ADD COLUMN to inherited table put column in wrong place [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/inherit">inherit</A>] <LI> Add ALTER TABLE DROP/ALTER COLUMN feature <LI> Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT <P> NULL specification on table [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/cluster">cluster</A>] <LI> Add SIMILAR TO to allow character classes, 'pg_[<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/a-c">a-c</A>]%' <LI> Auto-destroy sequence on DROP of table with SERIAL(Ryan) <LI> Allow LOCK TABLE tab1, tab2, tab3 so all tables locked in unison <LI> Allow INSERT/UPDATE of system-generated oid value for a row <LI> Allow ESCAPE '\' at the end of LIKE for ANSI compliance [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/like">like</A>] <LI> Rewrite the LIKE handling by rewriting the user string with the supplied ESCAPE [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/like">like</A>] <LI> -Move LIKE index optimization handling to the optimizer <LI> Allow RULE recompilation <LI> Support UNION/INTERSECT/EXCEPT in sub-selects <LI> Allow DELETE and UPDATE to use inheritance using tablename* </UL> <P> <STRONG>CLIENTS</STRONG> <UL> <LI> Make NULL's come out at the beginning or end depending on the ORDER BY direction <LI> Allow flag to control COPY input/output of NULLs <LI> Update reltuples from COPY command <LI> Allow psql \copy to allow delimiters <LI> Add a function to return the last inserted oid, for use in psql scripts <LI> Allow psql to print nulls as distinct from "" [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/null">null</A>] </UL> <P> <STRONG>EXOTIC FEATURES</STRONG> <UL> <LI> Add sql3 recursive unions <LI> Add the concept of dataspaces <LI> Add replication of distributed databases <LI> Allow queries across multiple databases </UL> <P> <STRONG>MISC</STRONG> <UL> <LI> Increase identifier length(NAMEDATALEN) if small performance hit <LI> Allow row re-use without vacuum(Vadim) <LI> Create a background process for each database that runs while database is idle, finding superceeded rows, gathering stats and vacuuming <LI> Add UNIQUE capability to non-btree indexes <LI> -Certain indexes will not shrink, i.e. oid indexes with many inserts <LI> Restore unused oid's on backend exit if no one else has gotten oids <LI> Have UPDATE/DELETE clean out indexes <LI> Allow WHERE restriction on ctid <LI> Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions <LI> Allow PQrequestCancel() to terminate when in waiting-for-lock state <LI> -Transaction log, so re-do log can be on a separate disk by with after-row images(Vadim) [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/logging">logging</A>] <LI> Populate backend status area and write program to dump status data <LI> Make oid use unsigned int more reliably, pg_atoi() <LI> Allow subqueries in target list <LI> Put sort files, large objects in their own directory <LI> Do autocommit so always in a transaction block(?) <LI> Show location of syntax error in query [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/yacc">yacc</A>] <LI> Redesign the function call interface to handle NULLs better [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/function">function</A>] <LI> Document/trigger/rule so changes to pg<U>shadow recreate pg</U>pwd [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/pg_shadow">pg_shadow</A>] <LI> Missing optimizer selectivities for date, r-tree, etc. [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/optimizer">optimizer</A>] <LI> Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup <LI> Overhaul bufmgr/lockmgr/transaction manager <LI> Add PL/Perl(Mark Hollomon) <LI> Make postgres user have a password by default <LI> Add configure test to check for C++ need for *.h and namespaces <LI> Allow BLCKSZ &lt;= 64k, not &lt;= 32k <LI> redesign UNION structures to have separarate target lists <LI> Allow multi-level query trees for INSERT INTO ... SELECT </UL> <H2><A NAME="section-1.3">PERFORMANCE</A></H2> <P> <STRONG>FSYNC</STRONG> <UL> <LI> -Allow transaction commits with rollback with no-fsync performance [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/fsync">fsync</A>] <LI> -Prevent fsync in SELECT-only queries </UL> <P> <STRONG>INDEXES</STRONG> <UL> <LI> Use indexes in ORDER BY for restrictive data sets, min(), max() <LI> Pull requested data directly from indexes, bypassing heap data <LI> Use index to restrict rows returned by multi-key index when used with non-consecutive keys or OR clauses, so fewer heap accesses <LI> -Convert function(constant) into a constant for index use <LI> Allow LIMIT ability on single-table queries that have no ORDER BY to use a matching index [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/limit">limit</A>] <LI> Improve LIMIT processing by using index to limit rows processed [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/limit">limit</A>] <LI> Have optimizer take LIMIT into account when considering index scans [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/limit">limit</A>] <LI> Make index creation use psort code, because it is now faster(Vadim) <LI> Allow creation of sort temp tables &gt; 1 Gig <LI> Create more system table indexes for faster cache lookups <LI> fix indexscan() so it does leak memory by not requiring caller to free <LI> Improve <U>bt</U>binsrch() to handle equal keys better, remove <U>bt</U>firsteq()(Tom) <LI> Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8, float4, numeric/decimal too [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/optimizer">optimizer</A>] <LI> -Allow optimizer to prefer plans that match ORDER BY </UL> <P> <STRONG>CACHE</STRONG> <UL> <LI> Cache most recent query plan(s) [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/prepare">prepare</A>] <LI> Shared catalog cache, reduce lseek()'s by caching table size in shared area <LI> elog() flushes cache, try invalidating just entries from current xact, perhaps using invalidation cache </UL> <P> <STRONG>MISC</STRONG> <UL> <LI> Allow compression of log and meta data <LI> Allow char() not to use variable-sized header to reduce disk size <LI> Do async I/O to do better read-ahead of data <LI> -Fix memory exhaustion when using many OR's [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/cnfify">cnfify</A>] <LI> Get faster regex() code from Henry Spencer &lt;<A HREF="mailto:henry@zoo.utoronto.ca">henry@zoo.utoronto.ca</A>&gt; when it is available <LI> Use mmap() rather than SYSV shared memory(?) <LI> -Process const = const parts of OR clause in separate pass <LI> Make oid use oidin/oidout not int4in/int4out in pg_type.h <LI> Improve Subplan list handling <LI> Allow Subplans to use efficient joins(hash, merge) with upper variable [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/subquery">subquery</A>] <LI> use fmgr_info()/fmgr_faddr() instead of fmgr() calls in high-traffic places, like GROUP BY, UNIQUE, index processing, etc. <LI> improve dynamic memory allocation by introducing tuple-context memory allocation [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/memory">memory</A>] <LI> fix memory leak in cache code when non-existant table is referenced <LI> In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3 <LI> pass atttypmod through parser in more cases [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/atttypmod">atttypmod</A>] <LI> remove duplicate type in/out functions for disk and net <LI> Allow persistent backends [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/persistent">persistent</A>] <LI> Misc [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/performance">performance</A>] </UL> <H2><A NAME="section-1.4">SOURCE CODE</A></H2> <UL> <LI> Add use of 'const' for varibles in source tree <LI> Fix C optimizer problem where fmgr_ptr calls return different types [<A HREF="http://www.postgresql.org/docs/pgsql/doc/TODO.detail/alpha">alpha</A>] <LI> -Add needed includes and removed unneeded include files(Bruce) <LI> Make configure --enable-debug add -g on compile line <LI> Does Mariposa source contain any other bug fixes? <LI> Remove SET KSQO option if OR processing is improved(Tom) </UL> <HR> <H3><A NAME="section-1.4.1">Developers who have claimed items are:</A></H3> <UL> <LI> Billy is Billy G. Allie &lt;<A HREF="mailto:Bill.Allie@mug.org">Bill.Allie@mug.org</A>&gt; <LI> Brook is Brook Milligan &lt;<A HREF="mailto:brook@trillium.NMSU.Edu">brook@trillium.NMSU.Edu</A>&gt; <LI> Bruce is Bruce Momjian&lt;<A HREF="mailto:maillist@candle.pha.pa.us">maillist@candle.pha.pa.us</A>&gt; <LI> Bryan is Bryan Henderson&lt;<A HREF="mailto:bryanh@giraffe.netgate.net">bryanh@giraffe.netgate.net</A>&gt; <LI> D'Arcy is D'Arcy J.M. Cain &lt;<A HREF="mailto:darcy@druid.net">darcy@druid.net</A>&gt; <LI> David is David Hartwig &lt;<A HREF="mailto:daveh@insightdist.com">daveh@insightdist.com</A>&gt; <LI> Edmund is Edmund Mergl &lt;<A HREF="mailto:E.Mergl@bawue.de">E.Mergl@bawue.de</A>&gt; <LI> Goran is Goran Thyni &lt;<A HREF="mailto:goran@kyla.kiruna.se">goran@kyla.kiruna.se</A>&gt; <LI> Hiroshi is Hiroshi Inoue&lt;<A HREF="mailto:Inoue@tpf.co.jp">Inoue@tpf.co.jp</A>&gt; <LI> Jan is Jan Wieck &lt;<A HREF="mailto:wieck@sapserv.debis.de">wieck@sapserv.debis.de</A>&gt; <LI> Marc is Marc Fournier &lt;<A HREF="mailto:scrappy@hub.org">scrappy@hub.org</A>&gt; <LI> Massimo Dal Zotto &lt;<A HREF="mailto:dz@cs.unitn.it">dz@cs.unitn.it</A>&gt; <LI> Michael is Michael Meskes &lt;<A HREF="mailto:meskes@postgresql.org">meskes@postgresql.org</A>&gt; <LI> Oleg is Oleg Bartunov &lt;<A HREF="mailto:oleg@sai.msu.su">oleg@sai.msu.su</A>&gt; <LI> Peter is Peter T Mount &lt;<A HREF="mailto:peter@retep.org.uk">peter@retep.org.uk</A>&gt; <LI> Ryan is Ryan Bradetich &lt;<A HREF="mailto:rbrad@hpb50023.boi.hp.com">rbrad@hpb50023.boi.hp.com</A>&gt; <LI> Stefan Simkovics &lt;<A HREF="mailto:ssimkovi@rainbow.studorg.tuwien.ac.at">ssimkovi@rainbow.studorg.tuwien.ac.at</A>&gt; <LI> Tatsuo is Tatsuo Ishii &lt;<A HREF="mailto:t-ishii@sra.co.jp">t-ishii@sra.co.jp</A>&gt; <LI> Tom is Tom Lane &lt;<A HREF="mailto:tgl@sss.pgh.pa.us">tgl@sss.pgh.pa.us</A>&gt; <LI> Thomas is Thomas Lockhart &lt;<A HREF="mailto:lockhart@alumni.caltech.edu">lockhart@alumni.caltech.edu</A>&gt; <LI> TomH is Tom I Helbekkmo &lt;<A HREF="mailto:tih@Hamartun.Priv.NO">tih@Hamartun.Priv.NO</A>&gt; <LI> Vadim is "Vadim B. Mikheev" &lt;<A HREF="mailto:vadim@krs.ru">vadim@krs.ru</A>&gt; </UL> </BODY> </HTML>
1999-09-28 23:56:49 +04:00
* Creating view and inheriting the view causes view* to show
duplicates(inherit)
2000-02-03 15:22:33 +03:00
* Disallow LOCK on view
1999-06-05 07:43:07 +04:00
1999-07-07 00:41:22 +04:00
MISC
* Plpgsql does not handle quoted mixed-case identifiers
2000-01-13 06:06:29 +03:00
* Buffer reference counting bugfixes
* Fix libpq bug that causes it to drop backend error message sent
2000-01-28 07:47:49 +03:00
just before connection closure (ie, any FATAL error message)
* SELECT ... UNION ... ORDER BY fails when sort expr not in result list
2000-01-29 20:25:46 +03:00
* SELECT ... UNION ... GROUP BY fails if column types disagree, no type
promotion occurs
2000-02-05 01:41:28 +03:00
* Modification of pg_class can happen while table in use by
another backend. Might lead to MVCC inside of syscache
2000-03-10 02:22:18 +03:00
* Permission to UPDATE table allows DELETE also
2000-04-28 18:44:47 +04:00
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ENHANCEMENTS
------------
1999-07-07 00:41:22 +04:00
URGENT
1999-09-27 07:24:50 +04:00
* Add OUTER joins, left and right[outer](Thomas, Bruce)
2000-01-11 15:11:20 +03:00
* Allow long tuples by chaining or auto-storing outside db (TOAST)(Jan)
1999-10-06 17:36:50 +04:00
* Fix memory leak for expressions[memory](Tom?)
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
ADMIN
2000-07-27 22:47:06 +04:00
* -More access control over who can create tables and use locks(Karel)
* -Test syslog functionality
1999-06-07 06:42:07 +04:00
* Allow elog() to return error codes, not just messages
* Allow international error message support and add error codes
2000-07-27 22:47:06 +04:00
* -Unify configuration into one configuration file (Peter E)
* -use setproctitle() if it exists for 'ps' display of status
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
TYPES
1999-06-07 06:42:07 +04:00
* Nchar (as distinguished from ordinary varchar),
* Domain capability
2000-07-17 17:23:18 +04:00
* -Add STDDEV/VARIANCE() function for standard deviation computation/variance
2000-01-13 06:06:29 +03:00
* Allow compression of large fields or a compressed field type
1997-10-17 18:30:26 +04:00
* Large objects
1999-07-07 00:41:22 +04:00
o Fix large object mapping scheme, own typeid or reltype(Peter)
1999-07-08 04:00:43 +04:00
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
1999-06-07 06:42:07 +04:00
* Add IPv6 capability to INET/CIDR types
2000-07-27 23:11:47 +04:00
* Fix improper masking of some inet/cidr types [cidr]
1999-06-07 06:42:07 +04:00
* Make a separate SERIAL type?
* Store binary-compatible type information in the system
* Add support for & operator
1999-07-07 00:41:22 +04:00
* Allow LOCALE on a per-column basis, default to ASCII
1999-09-14 06:19:38 +04:00
* Allow nulls in arrays
1999-09-28 06:57:55 +04:00
* Allow arrays to be ORDER'ed
1999-07-07 00:41:22 +04:00
* 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
1999-09-27 07:24:50 +04:00
* Functions returning sets don't really work right[function]
2000-07-27 22:51:40 +04:00
* -Add hash for int8 (Tom)
2000-05-14 05:29:07 +04:00
* SELECT col FROM tab WHERE numeric_col = 10.1 fails
2000-06-08 20:20:01 +04:00
* Get BIT type working
2000-06-14 07:30:49 +04:00
* Allow better handling of numeric constants, type conversion [typeconv]
2000-06-14 06:57:08 +04:00
* Support multiple simultaneous character sets, per SQL92
2000-06-15 17:54:51 +04:00
* Reject character sequences those are not valid in their charset
* Make functions more multi-byte aware, i.e. trim()
* Make n of CHAR(n)/VARCHAR(n) the number of letters, not bytes
2000-07-27 20:53:21 +04:00
* Update macaddr manufacturer numbers, or remove the function macaddr_manuf()
2000-07-27 22:51:40 +04:00
* Add btree index support for reltime, tinterval, regproc, bit, varbit
* Add rtree index support for line, lseg, path, point
1999-07-07 00:41:22 +04:00
VIEWS
1999-06-07 06:42:07 +04:00
1999-06-05 07:43:07 +04:00
* Allow DISTINCT on views
1998-02-28 01:01:58 +03:00
* Allow views of aggregate columns
1999-06-07 06:42:07 +04:00
* Allow views with subselects
1999-07-07 00:41:22 +04:00
INDEXES
1999-06-07 06:42:07 +04:00
* Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops)
1999-07-07 00:41:22 +04:00
fails index can't store constant parameters
1999-06-07 06:42:07 +04:00
* Allow SQL function indexes
* Add FILLFACTOR to index creation
2000-07-07 05:31:16 +04:00
* Re-enable partial indexes
1999-07-07 00:41:22 +04:00
COMMANDS
1999-06-07 06:42:07 +04:00
1999-09-27 07:24:50 +04:00
* ALTER TABLE ADD COLUMN to inherited table put column in wrong place [inherit]
2000-07-27 22:47:06 +04:00
* -Add ALTER TABLE ALTER COLUMN feature(Peter E)
* Add ALTER TABLE DROP COLUMN feature [drop]
2000-05-06 05:05:10 +04:00
* Add ALTER TABLE command to change table ownership
1999-09-22 01:17:42 +04:00
* Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT
2000-05-12 20:33:29 +04:00
NULL specification, indexes, permissions, etc on table
1999-06-07 06:42:07 +04:00
* Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
1999-07-07 13:11:15 +04:00
* Auto-destroy sequence on DROP of table with SERIAL(Ryan)
2000-06-01 23:12:30 +04:00
* Allow LOCK TABLE tab1, tab2, tab3 so all tables locked in unison [lock]
1999-06-07 06:42:07 +04:00
* Allow INSERT/UPDATE of system-generated oid value for a row
1999-09-27 07:24:50 +04:00
* Allow ESCAPE '\' at the end of LIKE for ANSI compliance [like]
1999-06-07 06:42:07 +04:00
* Rewrite the LIKE handling by rewriting the user string with the
1999-09-27 07:24:50 +04:00
supplied ESCAPE [like]
1999-07-09 08:20:22 +04:00
* Allow RULE recompilation
1999-08-18 19:11:52 +04:00
* Support UNION/INTERSECT/EXCEPT in sub-selects
2000-07-27 22:47:06 +04:00
* -Allow DELETE and UPDATE to use inheritance
2000-02-27 22:04:06 +03:00
* Allow INSERT INTO my_table VALUES (a, b, c, DEFAULT, x, y, z, ...)
2000-04-29 06:27:21 +04:00
* Allow BINARY option to SELECT, like we do with DECLARE
2000-06-08 20:03:12 +04:00
* Prevent truncate on table with a referential integrity trigger
2000-06-12 05:12:26 +04:00
* MOVE 0 should not move to end of cursor
2000-06-14 06:25:02 +04:00
* Overhaul ACL (access control) code
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
CLIENTS
1999-06-07 06:42:07 +04:00
* Make NULL's come out at the beginning or end depending on the
1999-07-07 00:41:22 +04:00
ORDER BY direction
1999-06-05 07:43:07 +04:00
* Update reltuples from COPY command
2000-01-13 16:22:05 +03:00
* fix array handling for ECPG
2000-01-21 06:55:22 +03:00
* add pg_dump option to dump type names as standard ANSI types
2000-07-27 22:50:37 +04:00
* -make pg_dump dump in oid order, so dependencies are resolved (Philip)
2000-04-17 20:35:23 +04:00
* allow psql \d to show primary and foreign keys
2000-04-20 00:50:34 +04:00
* allow psql \d to show temporary table schema
1999-06-07 06:42:07 +04:00
2000-04-28 23:15:49 +04:00
REFERENTIAL INTEGRITY
* Add MATCH PARTIAL referential integrity
* Foreign key does not check that columns referenced form a primary key
or constrained by UNIQUE
* Check that primary key exists at foreign key definition time
* Prevent column dropping if column is used by foreign key
* Propagate column or table renaming to foreign key constraints
* Emit a warning at foreign key creation time if no UNIQUE index
exists on referenced primary key attributes
2000-06-11 02:12:18 +04:00
* Add deferred trigger queue file (Jan)
2000-07-07 07:24:09 +04:00
* Allow oid to act as a foreign key
2000-04-28 23:15:49 +04:00
EXOTIC FEATURES
* Add sql3 recursive unions
2000-06-09 21:31:25 +04:00
* Add the concept of dataspaces/tablespaces [tablespaces]
2000-06-01 23:46:29 +04:00
* Add replication of distributed databases [replication]
* Allow queries across multiple databases
2000-04-28 23:15:49 +04:00
* Allow nested transactions (Vadim)
1999-07-07 00:41:22 +04:00
MISC
1999-06-05 07:43:07 +04:00
* Increase identifier length(NAMEDATALEN) if small performance hit
1999-07-07 13:11:15 +04:00
* Allow row re-use without vacuum(Vadim)
* Create a background process for each database that runs while
database is idle, finding superceeded rows, gathering stats and vacuuming
1999-06-07 06:42:07 +04:00
* Add UNIQUE capability to non-btree indexes
2000-02-22 17:08:12 +03:00
* Certain indexes will not shrink, i.e. oid indexes with many inserts(Vadim)
1999-06-07 06:42:07 +04:00
* Restore unused oid's on backend exit if no one else has gotten oids
* Have UPDATE/DELETE clean out indexes
* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
2000-01-10 07:23:58 +03:00
* Allow DELETE WHERE CURRENT OF cursor
2000-01-11 15:11:20 +03:00
* Transaction log, so re-do log can be on a separate disk by
with after-row images(Vadim) [logging](Vadim)(in-progress)
1999-06-07 06:42:07 +04:00
* Populate backend status area and write program to dump status data
* Make oid use unsigned int more reliably, pg_atoi()
1999-09-20 20:25:33 +04:00
* Put sort files, large objects in their own directory
* Do autocommit so always in a transaction block(?)
1999-09-27 07:24:50 +04:00
* Show location of syntax error in query [yacc]
2000-01-13 06:06:29 +03:00
* Redesign the function call interface to handle NULLs better[function](Tom)
1999-09-27 07:24:50 +04:00
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
1999-07-07 00:41:22 +04:00
* Overhaul bufmgr/lockmgr/transaction manager
* Allow BLCKSZ <= 64k, not <= 32k
1999-07-20 21:16:25 +04:00
* redesign UNION structures to have separarate target lists
1999-09-17 19:49:24 +04:00
* Allow multi-level query trees for INSERT INTO ... SELECT
2000-05-05 08:06:18 +04:00
* Use IPC_EXCL when creating shared memory and semaphores
2000-05-06 02:25:20 +04:00
* have pg_upgrade use pg_ctl to stop/start postmaster
2000-05-07 00:21:08 +04:00
* Encrpyt passwords in pg_shadow table using MD5
2000-07-05 08:39:07 +04:00
* Use flock() to prevent multiple postmasters on the same port [flock]
1996-10-04 19:15:24 +04:00
PERFORMANCE
-----------
1999-07-07 00:41:22 +04:00
FSYNC
2000-06-01 05:34:02 +04:00
* Allow transaction commits with rollback with no-fsync performance
[fsync] (Vadim)
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
INDEXES
2000-06-01 23:46:29 +04:00
* Use indexes to find min() and max()
1999-06-07 06:42:07 +04:00
* Use index to restrict rows returned by multi-key index when used with
1999-07-07 00:41:22 +04:00
non-consecutive keys or OR clauses, so fewer heap accesses
1999-09-27 19:21:36 +04:00
* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8,
float4, numeric/decimal too [optimizer]
1999-11-30 05:14:13 +03:00
* Include heap CTID in btree index keys, remove equal-key cruft from btree
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
CACHE
2000-06-14 21:01:35 +04:00
* Cache most recent query plan(s) (Karel) [prepare]
1997-10-17 18:30:26 +04:00
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
1999-06-07 06:42:07 +04:00
1999-07-07 00:41:22 +04:00
MISC
1997-10-17 18:30:26 +04:00
* Allow compression of log and meta data
1998-03-21 08:28:27 +03:00
* Allow char() not to use variable-sized header to reduce disk size
* Do async I/O to do better read-ahead of data
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
1999-07-07 00:41:22 +04:00
when it is available
1999-06-07 06:42:07 +04:00
* Use mmap() rather than SYSV shared memory(?)
* Make oid use oidin/oidout not int4in/int4out in pg_type.h
1999-06-05 07:43:07 +04:00
* Improve Subplan list handling
1999-06-07 06:42:07 +04:00
* Allow Subplans to use efficient joins(hash, merge) with upper variable
1999-09-27 21:05:08 +04:00
[subquery]
1999-07-07 13:11:15 +04:00
* use fmgr_info()/fmgr_faddr() instead of fmgr() calls in high-traffic
places, like GROUP BY, UNIQUE, index processing, etc.
* improve dynamic memory allocation by introducing tuple-context memory
1999-09-27 07:24:50 +04:00
allocation [memory]
2000-02-22 17:08:12 +03:00
* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
1999-09-27 07:24:50 +04:00
* Allow persistent backends [persistent]
2000-02-28 12:24:47 +03:00
* prevent labels from being output for stored rules (Tom)
* allow configuration of maximum number of open files
2000-05-14 06:53:49 +04:00
* Remove pg_listener index
2000-05-25 20:10:01 +04:00
* Remove ANALYZE from VACUUM so it can be run separately without locks
* Gather more accurate statistics using indexes
2000-06-01 05:34:02 +04:00
* Improve statistics storage in pg_class [performance]
* Improve VACUUM speed with indexes [vacuum]
2000-07-27 22:48:28 +04:00
* -BSD/OS does not support locale because there is no LC_MESSAGES (Bruce)
2000-04-28 18:44:47 +04:00
1999-07-07 00:41:22 +04:00
SOURCE CODE
-----------
1999-11-10 04:22:37 +03:00
* Add use of 'const' for variables in source tree
2000-06-13 11:11:35 +04:00
* -Fix C optimizer problem where fmgr_ptr calls return different types (Tom)
1999-09-17 05:57:36 +04:00
* Does Mariposa source contain any other bug fixes?
2000-04-28 23:15:49 +04:00
* Remove SET KSQO option now that OR processing is improved(Tom)
* -Use macros to define NT open() file parameters, remove NT-specific defines
2000-06-13 11:11:35 +04:00
* -Change CURRENT to OLD internally for rules (Bruce)
1999-07-07 00:41:22 +04:00
---------------------------------------------------------------------------
Developers who have claimed items are:
--------------------------------------
* Billy is Billy G. Allie <Bill.Allie@mug.org>
* Brook is Brook Milligan <brook@trillium.NMSU.Edu>
1999-11-14 08:11:02 +03:00
* Bruce is Bruce Momjian<pgman@candle.pha.pa.us>
1999-07-07 00:41:22 +04:00
* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net>
* David is David Hartwig <daveh@insightdist.com>
* Edmund is Edmund Mergl <E.Mergl@bawue.de>
* Goran is Goran Thyni <goran@kyla.kiruna.se>
2000-01-23 06:28:54 +03:00
* Hiroshi is Hiroshi Inoue<Inoue@tpf.co.jp>
1999-07-07 00:41:22 +04:00
* Jan is Jan Wieck <wieck@sapserv.debis.de>
* Marc is Marc Fournier <scrappy@hub.org>
* Massimo Dal Zotto <dz@cs.unitn.it>
* Michael is Michael Meskes <meskes@postgresql.org>
* Oleg is Oleg Bartunov <oleg@sai.msu.su>
* Peter is Peter T Mount <peter@retep.org.uk>
2000-07-27 22:50:37 +04:00
* Philip Warner <pjw@rhyme.com.au>
2000-01-23 06:28:54 +03:00
* Peter E is Peter Eisentraut<peter_e@gmx.net>
1999-07-07 13:11:15 +04:00
* Ryan is Ryan Bradetich <rbrad@hpb50023.boi.hp.com>
1999-07-07 00:41:22 +04:00
* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
* Tom is Tom Lane <tgl@sss.pgh.pa.us>
* Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu>
* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO>
* Vadim is "Vadim B. Mikheev" <vadim@krs.ru>