88< body bgcolor ="#FFFFFF " text ="#000000 " link ="#FF0000 " vlink ="#A00000 " alink ="#0000FF ">
99< h1 > < a name ="section_1 "> PostgreSQL TODO List</ a > </ h1 >
1010< p > Current maintainer: Bruce Momjian (< a href ="mailto:pgman@candle.pha.pa.us "> pgman@candle.pha.pa.us</ a > )< br />
11- Last updated: Tue May 10 18:26:46 EDT 2005
11+ Last updated: Mon May 16 19:35:37 EDT 2005
1212</ p >
1313< p > The most recent version of this document can be viewed at< br />
1414< a href ="http://www.postgresql.org/docs/faqs.TODO.html "> http://www.postgresql.org/docs/faqs.TODO.html</ a > .
@@ -82,7 +82,7 @@ <h1><a name="section_2">Administration</a></h1>
8282 </ li > < li > Allow WAL replay of CREATE TABLESPACE to work when the directory
8383 structure on the recovery computer is different from the original
8484 </ li > < li > Add "include file" functionality in postgresql.conf
85- </ li > < li > -Add session start time and last statement time to pg_stat_activity
85+ </ li > < li > * -Add session start time and last statement time to pg_stat_activity*
8686 </ li > < li > Allow server logs to be remotely read using SQL commands
8787 </ li > < li > Allow pg_hba.conf settings to be controlled via SQL
8888< p > This would require a new global table that is dumped to flat file for
@@ -122,7 +122,7 @@ <h1><a name="section_2">Administration</a></h1>
122122< p > This is useful for checking PITR recovery.
123123</ p >
124124 </ li > < li > Allow the PITR process to be debugged and data examined
125- </ li > < li > -Add the client IP address and port to pg_stat_activity
125+ </ li > < li > * -Add the client IP address and port to pg_stat_activity*
126126 </ li > < li > Improve replication solutions
127127 < ul >
128128 < li > Load balancing
@@ -279,7 +279,7 @@ <h1><a name="section_6">Indexes</a></h1>
279279</ p >
280280 </ li > < li > Add UNIQUE capability to non-btree indexes
281281 </ li > < li > Add rtree index support for line, lseg, path, point
282- </ li > < li > -Use indexes for MIN() and MAX()
282+ </ li > < li > * -Use indexes for MIN() and MAX()*
283283< p > MIN/MAX queries can already be rewritten as SELECT col FROM tab ORDER
284284 BY col {DESC} LIMIT 1. Completing this item involves doing this
285285 transformation automatically.
@@ -300,7 +300,7 @@ <h1><a name="section_6">Indexes</a></h1>
300300 order. Another method would be to sort heap ctids matching the index
301301 before accessing the heap rows.
302302</ p >
303- </ li > < li > -Allow non-bitmap indexes to be combined by creating bitmaps in memory
303+ </ li > < li > * -Allow non-bitmap indexes to be combined by creating bitmaps in memory*
304304< p > This feature allows separate indexes to be ANDed or ORed together. This
305305 is particularly useful for data warehousing applications that need to
306306 query the database in an many permutations. This feature scans an index
@@ -345,7 +345,7 @@ <h1><a name="section_7">Commands</a></h1>
345345 </ li > < li > Allow an alias to be provided for the target table in UPDATE/DELETE
346346< p > This is not SQL-spec but many DBMSs allow it.
347347</ p >
348- </ li > < li > -Allow additional tables to be specified in DELETE for joins
348+ </ li > < li > * -Allow additional tables to be specified in DELETE for joins*
349349< p > UPDATE already allows this (UPDATE...FROM) but we need similar
350350 functionality in DELETE. It's been agreed that the keyword should
351351 be USING, to avoid anything as confusing as DELETE FROM a FROM b.
@@ -582,7 +582,7 @@ <h1><a name="section_9">Referential Integrity</a></h1>
582582 memory. This could exhaust memory for very large trigger queues.
583583 This item involves dumping large queues into files.
584584</ p >
585- </ li > < li > -Implement shared row locks and use them in RI triggers
585+ </ li > < li > * -Implement shared row locks and use them in RI triggers*
586586 </ li > < li > Enforce referential integrity for system tables
587587 </ li > < li > Change foreign key constraint for array -> element to mean element
588588 in array (?)
@@ -661,7 +661,7 @@ <h1><a name="section_13">Cache</a></h1>
661661</ p >
662662 </ li > < li > Consider use of open/fcntl(O_DIRECT) to minimize OS caching,
663663 especially for WAL writes
664- </ li > < li > -Cache last known per-tuple offsets to speed long tuple access
664+ </ li > < li > * -Cache last known per-tuple offsets to speed long tuple access*
665665 </ li > < li > Speed up COUNT(*)
666666< p > We could use a fixed row count and a +/- count to follow MVCC
667667 visibility rules, or a single cached value could be used and
@@ -684,7 +684,7 @@ <h1><a name="section_13">Cache</a></h1>
684684 </ li > < li > Query execute plan
685685 </ li > < li > Query results
686686 </ li > </ ul >
687- </ li > < li > -Allow the size of the buffer cache used by temporary objects to be
687+ </ li > < li > * -Allow the size of the buffer cache used by temporary objects to be*
688688 specified as a GUC variable
689689< p > Larger local buffer cache sizes requires more efficient handling of
690690 local cache lookups.
@@ -715,7 +715,7 @@ <h1><a name="section_14">Vacuum</a></h1>
715715 write lock. However, the read lock promotion to write lock could lead
716716 to deadlock situations.
717717</ p >
718- </ li > < li > -Add a warning when the free space map is too small
718+ </ li > < li > * -Add a warning when the free space map is too small*
719719 </ li > < li > Maintain a map of recently-expired rows
720720< p > This allows vacuum to target specific pages for possible free space
721721 without requiring a sequential scan.
@@ -742,7 +742,7 @@ <h1><a name="section_15">Locking</a></h1>
742742 while on non-SMP machines, the backend should sleep so the process
743743 holding the lock can complete and release it.
744744</ p >
745- </ li > < li > -Improve SMP performance on i386 machines
745+ </ li > < li > * -Improve SMP performance on i386 machines*
746746< p > i386-based SMP machines can generate excessive context switching
747747 caused by lock failure in high concurrency situations. This may be
748748 caused by CPU cache line invalidation inefficiencies.
@@ -874,7 +874,7 @@ <h1><a name="section_20">Source Code</a></h1>
874874 </ li > < li > Allow cross-compiling by generating the zic database on the target system
875875 </ li > < li > Improve NLS maintenace of libpgport messages linked onto applications
876876 </ li > < li > Allow ecpg to work with MSVC and BCC
877- </ li > < li > -Make src/port/snprintf.c thread-safe
877+ </ li > < li > * -Make src/port/snprintf.c thread-safe*
878878 </ li > < li > Add xpath_array() to /contrib/xml2 to return results as an array
879879 </ li > < li > Allow building in directories containing spaces
880880< p > This is probably not possible because 'gmake' and other compiler tools
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