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Update FAQ and TODO
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Bruce Momjian
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doc/TODO
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doc/TODO
@ -1,16 +1,16 @@
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====================================================
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TODO list (FAQ) for PostgreSQL
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====================================================
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last updated: Sat Mar 1 21:28:10 EST 1997
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last updated: Tue May 13 23:16:50 EDT 1997
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current maintainer: Bruce Momjian (maillist@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 WWW site, http://www.postgreSQL.org.
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Changes included in the 6.0 release are listed at the end of this page.
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Dashed items(-) are being worked on for the 6.1 release.
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Dashed items(-) are being worked on for the post-6.0 release.
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THE CHANGES FOR 6.1 APPEAR AT THE END OF THIS DOCUMENT
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Developers who have claimed items are:
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Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
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@ -20,8 +20,15 @@ Developers who have claimed items are:
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Darren is Darren King <darrenk@insightdist.com>
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Edmund is Edmund Mergl <E.Mergl@bawue.de>
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Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
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Jun is Jun Kuwamura <juk@rccm.co.jp>
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Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com>
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Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de>
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Oleg is Oleg Bartunov <oleg@sai.msu.su>
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Paul is Paul M. Aoki <aoki@CS.Berkeley.EDU>
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Raymond is Raymond Toy <toy@rtp.ericsson.se>
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Soo-Ho Ok <shok@detc.dongeui-tc.ac.kr>
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Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
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Sven is Sven Verdoolaege <skimo@breughel.ufsia.ac.be>
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Thomas is Thomas Lockhart <tgl@mythos.jpl.nasa.gov>
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Vadim is "Vadim B. Mikheev" <vadim@sable.krasnoyarsk.su>
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Vivek is Vivek Khera <khera@kci.kciLink.com>
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@ -51,7 +58,7 @@ Fix UPDATE key_table SET keyval=max(reftab.NUM)+1 WHERE tblname='reftab'
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ENHANCEMENTS
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------------
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Add full ANSI SQL capabilities
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Add full ANSI SQL capabilities (Stefan)
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add subselects, possibility using temporary SQL functions
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Implement HAVING clause
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Implement EXISTS qualifier
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@ -69,12 +76,13 @@ Add full ANSI SQL capabilities
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add the concept of dataspaces
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allow conversion type casts on SELECT target fields
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Allow compression of large fields or a compressed field type
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Fix the rules system(Jan?)
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Fix the rules system(Jan?,Soo-Ho)
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robust
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making INSTEAD rules work
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add CONSTRAINT
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Full set of text operations and functions
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word searches, concat, upper/lower(), max() on text, char
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- upper/lower()
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word searches, concat,max() on text, char
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Replace table-level locking with row or page-level locking(Vadim)
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Large objects
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overwriting blocks has problems
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@ -82,11 +90,11 @@ Large objects
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Fix large object mapping scheme
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not to stuff everything as files in a single directory
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Better interface for adding to pg_group
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Make multi-field indexes easier to create
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-Make multi-field indexes easier to create(Vadim)
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allow optimizer to effectively use parameters without accessing table
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Add int8 type
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Add MONEY/DECIMAL type with defined precision
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Add table comments
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-Add int8 type(Thomas)
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-Add MONEY/DECIMAL type(Thomas)
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Make MONEY/DECIMAL have a defined precision
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Add support for tables >2G, or test current version
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Incorporate the PERL PG95 interface library into source tree(Edmund)
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Threaded version of the server or libpq
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@ -100,8 +108,9 @@ remove time-travel feature(Vadim)
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reduce system column overhead(Vadmin)
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remove pg_time table(Vadim)
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allow row re-use without vacuum, maybe?(Vadim)
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split apart row removal function from statistics function
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-split apart row removal function from statistics function(Vadim)
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can't vacuum large objects
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can't reduce index file size with vacuum
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Remove restriction that ORDER BY field must be in SELECT list(?)
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Allow queries about owner of datbases, tables like:
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SELECT u.usesysid FROM postgres.pg_user u;
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@ -117,17 +126,20 @@ Remove stale files upon startup(Vivek)
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Add command to show privileges
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Allow INSERT INTO ... SELECT to convert column types
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Add syslog functionality
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Allow aggregate for All types, like count(Darren)
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Allow aggregate for all types, like count(Darren)
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Improve optimizer plan choice(Darren)
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Add STDDEV/VARIANCE() function for standard deviation computation/variance
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Add upper/lower functions
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Add table/column/function discription table indexed by oid
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-make all identifiers case-insensitive(Bruce)
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add pg_type attribute to identify types that need length (bpchar, varchar)
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add UNIQUE capability to non-btree indexes
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allow GROUP BY on columns that are functions
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add non-ascii collating strings with strcoll() and setlocale()
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new DATE routines (Thomas)
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-allow GROUP BY on columns that on functions(Vadim)
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-add non-ascii collating strings with strcoll() and setlocale (Oleg)
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-new DATE routines (Thomas)
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-index NULL fields(Vadim)
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-Add SERIAL column type(Vadim)
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-Add multi-column indexes(Vadim)
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-Add SET VAR TO command
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PERFORMANCE
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-----------
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@ -153,7 +165,7 @@ Allow indexes to be used with OR clauses(Vadim)
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DOCUMENTATION
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-------------
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Update usermanual source
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Update usermanual source(many)
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remove time-travel in documentation(Bruce)
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added features used in grammer but not in docs, like :: and CAST
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add DECLARE manual page
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@ -161,113 +173,73 @@ add DECLARE manual page
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PORTABILITY
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-----------
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Change c.h "Index" and "bool" so they do not conflict with c++
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---------------------------------------------------------------------------
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CHANGES IN 6.0 RELEASE
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Bug Fixes
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---------
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ALTER TABLE bug - running postgress process needs to re-read table definition
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Allow vacuum to be run on one table or entire database(Bruce)
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Array fixes
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Fix array over-runs of memory writes(Kurt)
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Fix elusive btree range/non-range bug(Dan)
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Fix for hash indexes on some types like time and date
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Fix for pg_log size explosion
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Fix permissions on lo_export()(Bruce)
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Fix unitialized reads of memory(Kurt)
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Fixed ALTER TABLE ... char(3) bug(Bruce)
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Fixed a few small memory leaks
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Fixed EXPLAIN handling of options and changed full_path option name
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Fixed output of group acl permissions
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Memory leaks (hunt and destroy with tools like Purify(Kurt)
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Minor improvements to rules system
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NOTIFY fixes
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New asserts for run-checking
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Overhauled parser/analyze code to properly report errors and increase speed
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Pg_dump -d now handles NULL's properly(Bruce)
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Prevent SELECT NULL from crashing server (Bruce)
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Properly report errors when INSERT ... SELECT columns did not match
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Properly report errors when insert column names were not correct
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Psql \g filename now works(Bruce)
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Psql fixed problem with multiple statements on one line with multiple outputs
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Removed duplicate system oid's
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SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
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Several fixes for queries that crashed the backend
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Starting quote in insert string errors(Bruce)
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Submiting an empty query now returns empty status, not just " " query(Bruce)
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CHANGES IN THE 6.1 RELEASE
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Enhancements
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------------
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Add EXPLAIN manual page(Bruce)
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Add UNIQUE index capability(Dan)
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Add hostname/user level access control rather than just hostname and user
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Add synonym of != for <>(Bruce)
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Allow "select oid,* from table"
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Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce)
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Allow COPY from the frontend(Bryan)
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Allow GROUP BY to use alias column name(Bruce)
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Allow actual compression, not just reuse on the same page(Vadim)
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Allow installation-configuration option to auto-add all local users(Bryan)
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Allow libpq to distinguish between text value '' and null(Bruce)
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Allow non-postgres users with createdb privs to destroydb's
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Allow restriction on who can create C functions(Bryan)
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Allow restriction on who can do backend COPY(Bryan)
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Allow system to use oid index using constant without cast to oid(Bruce)
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Auto-cast numeric constants to type of non-constant(Bruce)
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Can shrink tables, pg_time and pg_log(Vadim & Erich)
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Change debug level 2 to print queries only, changed debug heading layout(Bruce)
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Change default decimal constant representation from float4 to float8(Bruce)
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European date format now set when postmaster is started
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Execute lowercase function names if not found with exact case
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Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z'
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Gist now included in the distrubution(Marc)
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Idend authentication of local users(Bryan)
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Implement BETWEEN qualifier(Bruce)
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Implement IN qualifier(Bruce)
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Libpq has PQgetisnull()(Bruce)
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Libpq++ improvements
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New options to initdb(Bryan)
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Pg_dump allow dump of oid's(Bruce)
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Pg_dump create indexes after tables are loaded for speed(Bruce)
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Pg_dumpall dumps all databases, and the user table
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Pginterface additions for NULL values(Bruce)
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Prevent postmaster from being run as root
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Psql \h and \? is now readable(Bruce)
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Psql allow backslashed, semicolons anywhere on the line(Bruce)
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Psql changed command prompt for lines in query or in quotes(Bruce)
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Psql char(3) now displays as (bp)char in \d output(Bruce)
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Psql return code now more accurate(Bryan?)
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Psql updated help syntax(Bruce)
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Re-visit and fix vacuum(Vadim)
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Reduce size of regression diffs, remove timezone name difference(Bruce)
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Remove compile-time parameters to enable binary distributions(Bryan)
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Reverse meaning of HBA masks(Bryan)
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Secure Authentication of local users(Bryan)
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Speed up vacuum(Vadim)
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Vacuum now had VERBOSE option(Bruce)
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new configuration script(Marc)
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readline configuration option added(Marc)
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OS-specific configuration options removed(Marc)
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new OS-specific template files(Marc)
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no more need to edit Makefile.global(Marc)
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attribute optimization statistics(Bruce)
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re-arrange include files(Marc)
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much faster new btree bulk load code(Paul)
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BTREE UNIQUE added to bulk load code(Vadim)
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new lock debug code(Massimo)
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packet length checking in library routines
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lock manager priority patch
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massing changes to libpg++(Leo)
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nextstep patches (Gregor Hoffleit)
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removed WIN32-specific code(Bruce)
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new GEQO optimizer speeds table multi-table optimization(Martin)
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removed postmaster -e option, now only postgres -e option (Bruce)
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check for under/over flow of float8(Bruce)
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multi-table join fix(Vadim)
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new WARN message for non-unique insert into unique key(Marc)
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update x=-3, no spaces, now valid(Bruce)
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remove case-sensitive identifier handling(Bruce,Thomas,Dan)
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SIGPIPE crash fix(Darren)
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debug backend now pretty-prints tree(Darren)
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new Oracle character functions(Edmund)
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new plaintext password functions(Dan)
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no such class or insufficient privilege changed to distinct messages(Dan)
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new ANSI timestamp function(Dan)
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new ANSI Time and Date types (Thomas)
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merge duplicate library code in front/backends(Martin)
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move large chunks of data in backend(Martin)
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multi-column btree indexes(Vadim)
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new SET var TO value command(Martin)
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now works with eBones, international Kerberos(Jun)
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large object fixes(Sven)
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allow btree indexes to handle NULLs(Vadim)
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timezone fixes(D'Arcy)
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more shared library support
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auto-udpate transaction status on reads(Dan)
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new locale settings for character types(Oleg)
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new SEQUENCE serial number generator(Vadim)
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select SUM(x) can return NULL on no rows(Thomas)
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internal optimizer, executor bug fixes(Vadim)
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fix problem where inner loop in < or <= has no rows(Vadim)
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prevent re-commuting join index clauses(Vadim)
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fix join clauses for multiple tables(Vadim)
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fix hash, hashjoin for arrays(Vadim)
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fix btree for abstime type(Vadim)
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GROUP BY function now possible(Vadim)
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re-organize regression test(Thomas,Marc)
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new optimizer operation weights(Vadim)
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new psql \z grant/permit option(Marc)
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new MONEY data type(D'Arcy)
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c++ include file cleanup(Bruce)
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tcp socket communication speed improved(Vadim)
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large object fixes(Raymond)
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new VACUUM option for attribute statistics, and for certain columns (Vadim)
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many geometric type improvements(Thomas,Keith)
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additional regression tests(Thomas)
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new datestyle variable(Thomas)
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more comparison operators for sorting types(Thomas)
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new conversion functions(Thomas)
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new more compact btree format(Vadim)
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Source tree changes
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-------------------
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All functions now have prototypes that are compared against the calls
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Allow asserts to be disabled easly from Makefile.global(Bruce)
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Change oid constants used in code to #define names
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Decoupled sparc and solaris defines(Kurt)
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Gcc -Wall compiles cleanly with warnings only from unfixable constructs
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Major include file reorganization/reduction(Marc)
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Make now stops on compile failure(Bryan)
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Makefile restructuring(Bryan, Marc)
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Merge bsdi_2_1 to bsdi(Bruce)
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Monitor program removed
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Name change from Postgres95 to PostgreSQL
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New config.h file(Marc, Bryan)
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PG_VERSION now set to 6.0 and used by postmaster
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Portability additions, including Ultrix, DG/UX, AIX, and Solaris
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Reduced the number of #define's, centeralized #define's
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Remove duplicate OIDS in system tables(Dan)
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Remove duplicate system catalog info or report mismatches(Dan)
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Removed many os-specific #define's
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Restructured object file generation/location(Bryan, Marc)
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Restructured port-specific file locations(Bryan, Marc)
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Unused/uninialized variables corrected
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