PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
-Last updated: Wed Mar 5 11:07:13 EST 2008
+Last updated: Wed Mar 5 22:15:29 EST 2008
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
ANALYZE, and CLUSTER
-* Referential Integrity
- o Add MATCH PARTIAL referential integrity
- o Change foreign key constraint for array -> element to mean element
- in array?
- o Fix problem when cascading referential triggers make changes on
- cascaded tables, seeing the tables in an intermediate state
+Referential Integrity
+=====================
- http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
- http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
+* Add MATCH PARTIAL referential integrity
+* Change foreign key constraint for array -> element to mean element
+ in array?
+* Fix problem when cascading referential triggers make changes on
+ cascaded tables, seeing the tables in an intermediate state
- o Allow DEFERRABLE and end-of-statement UNIQUE constraints?
+ http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
+ http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
- This would allow UPDATE tab SET col = col + 1 to work if col has
- a unique index. Currently, uniqueness checks are done while the
- command is being executed, rather than at the end of the statement
- or transaction.
+* Allow DEFERRABLE and end-of-statement UNIQUE constraints?
- http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html
- http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php
+ This would allow UPDATE tab SET col = col + 1 to work if col has
+ a unique index. Currently, uniqueness checks are done while the
+ command is being executed, rather than at the end of the statement
+ or transaction.
+ http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html
+ http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php
-* Server-Side Languages
+Server-Side Languages
+=====================
- o PL/pgSQL
- o Fix RENAME to work on variables other than OLD/NEW
+* PL/pgSQL
+ o Fix RENAME to work on variables other than OLD/NEW
- http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php
- http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php
- http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php
+ http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php
+ http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php
+ http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php
- o Allow function parameters to be passed by name,
- get_employee_salary(12345 AS emp_id, 2001 AS tax_year)
- o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
- o Allow listing of record column names, and access to
- record columns via variables, e.g. columns := r.(*),
- tval2 := r.(colname)
+ o Allow function parameters to be passed by name,
+ get_employee_salary(12345 AS emp_id, 2001 AS tax_year)
+ o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
+ o Allow listing of record column names, and access to
+ record columns via variables, e.g. columns := r.(*),
+ tval2 := r.(colname)
- http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
- http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
- http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
+ http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
+ http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
+ http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
- o Add support for SCROLL cursors
- o Add support for WITH HOLD cursors
- o Allow row and record variables to be set to NULL constants,
- and allow NULL tests on such variables
+ o Add support for SCROLL cursors
+ o Add support for WITH HOLD cursors
+ o Allow row and record variables to be set to NULL constants,
+ and allow NULL tests on such variables
- Because a row is not scalar, do not allow assignment
- from NULL-valued scalars.
+ Because a row is not scalar, do not allow assignment
+ from NULL-valued scalars.
- http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php
+ http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php
- o Other
- o Add table function support to pltcl, plpythonu
- o Add support for polymorphic arguments and return types to
- languages other than PL/PgSQL
- o Add capability to create and call PROCEDURES
- o Add support for OUT and INOUT parameters to languages other
- than PL/PgSQL
- o Add PL/PythonU tracebacks
+* Other
+ o Add table function support to pltcl, plpythonu
+ o Add support for polymorphic arguments and return types to
+ languages other than PL/PgSQL
+ o Add capability to create and call PROCEDURES
+ o Add support for OUT and INOUT parameters to languages other
+ than PL/PgSQL
+ o Add PL/PythonU tracebacks
- http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php
+ http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php
- o Allow data to be passed in native language formats, rather
- than only text
+ o Allow data to be passed in native language formats, rather
+ than only text
- http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php
+ http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php
Clients
<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
-Last updated: Wed Mar 5 11:07:13 EST 2008
+Last updated: Wed Mar 5 22:15:29 EST 2008
</p>
<p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
<li>Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
ANALYZE, and CLUSTER
</li></ul>
- </li><li>Referential Integrity
+</li></ul>
+<h1><a name="section_8">Referential Integrity</a></h1>
+
+<ul>
+ <li>Add MATCH PARTIAL referential integrity
+ </li><li>Change foreign key constraint for array -> element to mean element
+ in array?
+ </li><li>Fix problem when cascading referential triggers make changes on
+ cascaded tables, seeing the tables in an intermediate state
+<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php</a>
+ <a href="http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php</a>
+</p>
+ </li><li>Allow DEFERRABLE and end-of-statement UNIQUE constraints?
+<p> This would allow UPDATE tab SET col = col + 1 to work if col has
+ a unique index. Currently, uniqueness checks are done while the
+ command is being executed, rather than at the end of the statement
+ or transaction.
+ <a href="http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html">http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html</a>
+ <a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php</a>
+</p>
+</li></ul>
+<h1><a name="section_9">Server-Side Languages</a></h1>
+
+<ul>
+ <li>PL/pgSQL
<ul>
- <li>Add MATCH PARTIAL referential integrity
- </li><li>Change foreign key constraint for array -> element to mean element
- in array?
- </li><li>Fix problem when cascading referential triggers make changes on
- cascaded tables, seeing the tables in an intermediate state
-<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php</a>
- <a href="http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php</a>
-</p>
- </li><li>Allow DEFERRABLE and end-of-statement UNIQUE constraints?
-<p> This would allow UPDATE tab SET col = col + 1 to work if col has
- a unique index. Currently, uniqueness checks are done while the
- command is being executed, rather than at the end of the statement
- or transaction.
-</p>
-<p> <a href="http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html">http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html</a>
- <a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php</a>
+ <li>Fix RENAME to work on variables other than OLD/NEW
+<p> <a href="http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php">http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php</a>
+ <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php</a>
+ <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php</a>
+</p>
+ </li><li>Allow function parameters to be passed by name,
+ get_employee_salary(12345 AS emp_id, 2001 AS tax_year)
+ </li><li>Allow handling of %TYPE arrays, e.g. tab.col%TYPE[<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?"></a>]
+ </li><li>Allow listing of record column names, and access to
+ record columns via variables, e.g. columns := r.(*),
+ tval2 := r.(colname)
+<p> <a href="http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php">http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php</a>
+ <a href="http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php">http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php</a>
+ <a href="http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php">http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php</a>
+</p>
+ </li><li>Add support for SCROLL cursors
+ </li><li>Add support for WITH HOLD cursors
+ </li><li>Allow row and record variables to be set to NULL constants,
+ and allow NULL tests on such variables
+<p> Because a row is not scalar, do not allow assignment
+ from NULL-valued scalars.
+</p>
+<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php</a>
</p>
</li></ul>
- </li><li>Server-Side Languages
+ </li><li>Other
<ul>
- <li>PL/pgSQL
- <ul>
- <li>Fix RENAME to work on variables other than OLD/NEW
-<p> <a href="http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php">http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php</a>
- <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php</a>
- <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php</a>
-</p>
- </li><li>Allow function parameters to be passed by name,
- get_employee_salary(12345 AS emp_id, 2001 AS tax_year)
- </li><li>Allow handling of %TYPE arrays, e.g. tab.col%TYPE[<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?"></a>]
- </li><li>Allow listing of record column names, and access to
- record columns via variables, e.g. columns := r.(*),
- tval2 := r.(colname)
-<p> <a href="http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php">http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php</a>
- <a href="http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php">http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php</a>
- <a href="http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php">http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php</a>
-</p>
- </li><li>Add support for SCROLL cursors
- </li><li>Add support for WITH HOLD cursors
- </li><li>Allow row and record variables to be set to NULL constants,
- and allow NULL tests on such variables
-<p> Because a row is not scalar, do not allow assignment
- from NULL-valued scalars.
-</p>
-<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php</a>
-</p>
- </li></ul>
- </li><li>Other
- <ul>
- <li>Add table function support to pltcl, plpythonu
- </li><li>Add support for polymorphic arguments and return types to
- languages other than PL/PgSQL
- </li><li>Add capability to create and call PROCEDURES
- </li><li>Add support for OUT and INOUT parameters to languages other
- than PL/PgSQL
- </li><li>Add PL/PythonU tracebacks
-<p> <a href="http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php">http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php</a>
-</p>
- </li><li>Allow data to be passed in native language formats, rather
- than only text
-<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php">http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php</a>
+ <li>Add table function support to pltcl, plpythonu
+ </li><li>Add support for polymorphic arguments and return types to
+ languages other than PL/PgSQL
+ </li><li>Add capability to create and call PROCEDURES
+ </li><li>Add support for OUT and INOUT parameters to languages other
+ than PL/PgSQL
+ </li><li>Add PL/PythonU tracebacks
+<p> <a href="http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php">http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php</a>
+</p>
+ </li><li>Allow data to be passed in native language formats, rather
+ than only text
+<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php">http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php</a>
</p>
- </li></ul>
</li></ul>
</li></ul>
-<h1><a name="section_8">Clients</a></h1>
+<h1><a name="section_10">Clients</a></h1>
<ul>
<li>Have pg_ctl look at PGHOST in case it is a socket directory?
</p>
</li></ul>
</li></ul>
-<h1><a name="section_9">Triggers</a></h1>
+<h1><a name="section_11">Triggers</a></h1>
<ul>
<li>Add deferred trigger queue file
<p> <a href="http://archives.postgresql.org/pgsql-sql/2008-01/msg00050.php">http://archives.postgresql.org/pgsql-sql/2008-01/msg00050.php</a>
</p>
</li></ul>
-<h1><a name="section_10">Indexes</a></h1>
+<h1><a name="section_12">Indexes</a></h1>
<ul>
<li>Add UNIQUE capability to non-btree indexes
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg01199.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg01199.php</a>
</p>
</li></ul>
-<h1><a name="section_11">Fsync</a></h1>
+<h1><a name="section_13">Fsync</a></h1>
<ul>
<li>Determine optimal fdatasync/fsync, O_SYNC/O_DSYNC options
</p>
</li><li>Add program to test if fsync has a delay compared to non-fsync
</li></ul>
-<h1><a name="section_12">Cache Usage</a></h1>
+<h1><a name="section_14">Cache Usage</a></h1>
<ul>
<li>Speed up COUNT(*)
<a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php</a>
</p>
</li></ul>
-<h1><a name="section_13">Vacuum</a></h1>
+<h1><a name="section_15">Vacuum</a></h1>
<ul>
<li>Improve speed with indexes
</p>
</li></ul>
</li></ul>
-<h1><a name="section_14">Locking</a></h1>
+<h1><a name="section_16">Locking</a></h1>
<ul>
<li>Fix priority ordering of read and write light-weight locks (Neil)
<a href="http://archives.postgresql.org/pgsql-committers/2008-01/msg00365.php">http://archives.postgresql.org/pgsql-committers/2008-01/msg00365.php</a>
</p>
</li></ul>
-<h1><a name="section_15">Startup Time Improvements</a></h1>
+<h1><a name="section_17">Startup Time Improvements</a></h1>
<ul>
<li>Experiment with multi-threaded backend for backend creation [<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?thread">thread</a>]
a single session using multiple threads to execute a statement faster.
</p>
</li></ul>
-<h1><a name="section_16">Write-Ahead Log</a></h1>
+<h1><a name="section_18">Write-Ahead Log</a></h1>
<ul>
<li>Eliminate need to write full pages to WAL before page modification [<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?wal">wal</a>]
<a href="http://archives.postgresql.org/pgsql-hackers/2008-02/msg01279.php">http://archives.postgresql.org/pgsql-hackers/2008-02/msg01279.php</a>
</p>
</li></ul>
-<h1><a name="section_17">Optimizer / Executor</a></h1>
+<h1><a name="section_19">Optimizer / Executor</a></h1>
<ul>
<li>Improve selectivity functions for geometric operators
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg00096.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg00096.php</a>
</p>
</li></ul>
-<h1><a name="section_18">Miscellaneous Performance</a></h1>
+<h1><a name="section_20">Miscellaneous Performance</a></h1>
<ul>
<li>Do async I/O for faster random read-ahead of data
concurrent reads from multiple devices in a partitioned table.
</p>
</li></ul>
-<h1><a name="section_19">Source Code</a></h1>
+<h1><a name="section_21">Source Code</a></h1>
<ul>
<li>Add use of 'const' for variables in source tree
of result sets using new statement protocol
</li></ul>
</li></ul>
-<h1><a name="section_20">Exotic Features</a></h1>
+<h1><a name="section_22">Exotic Features</a></h1>
<ul>
<li>Add pre-parsing phase that converts non-ISO syntax to supported
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2008-01/msg00893.php">http://archives.postgresql.org/pgsql-hackers/2008-01/msg00893.php</a>
</p>
</li></ul>
-<h1><a name="section_21">Features We Do <u>Not</u> Want</a></h1>
+<h1><a name="section_23">Features We Do <u>Not</u> Want</a></h1>
<ul>
<li>All backends running as threads in a single process (not wanted)
projects / postgresql / commitdiff