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doc/TODO

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1-
====================================================
2-
TODO list (FAQ) for PostgreSQL
3-
====================================================
4-
last updated: Fri Oct 17 08:18:16 EDT 1997
1+
TODO list for PostgreSQL
2+
========================
3+
Last updated: Fri Oct 17 08:18:16 EDT 1997
54

6-
current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
5+
Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
76

87
The most recent version of this document can be viewed at
9-
the postgreSQL WWW site, http://www.postgreSQL.org.
8+
the PostgreSQL WWW site, http://www.postgreSQL.org.
109

11-
THE CHANGES FOR 6.2 and 6.2.1 APPEAR AT THE END OF THIS DOCUMENT
10+
THE CHANGES FOR 6.2 AND 6.2.1 APPEAR AT THE END OF THIS DOCUMENT
1211

1312
Developers who have claimed items are:
14-
Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
15-
Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
16-
Dan is Dan McGuirk <mcguirk@indirect.com>
17-
Daniel is Daniel Kalchev <daniel@digsys.bg>
18-
Darren is Darren King <darrenk@insightdist.com>
19-
Edmund is Edmund Mergl <E.Mergl@bawue.de>
20-
Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
21-
Gerhard is Gerhard Reithofer <gerhardr@tech-edv.co.at>
22-
Igor is Igor <igor@sba.miami.edu>
23-
Jun is Jun Kuwamura <juk@rccm.co.jp>
24-
Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com>
25-
Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de>
26-
Oleg is Oleg Bartunov <oleg@sai.msu.su>
27-
Paul is Paul M. Aoki <aoki@CS.Berkeley.EDU>
28-
Patrick is Patrick van Kleef <pvk@pobox.com>
29-
Raymond is Raymond Toy <toy@rtp.ericsson.se>
30-
Soo-Ho Ok <shok@detc.dongeui-tc.ac.kr>
31-
Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
32-
Sven is Sven Verdoolaege <skimo@breughel.ufsia.ac.be>
33-
Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
34-
Thomas is Thomas Lockhart <tgl@mythos.jpl.nasa.gov>
35-
Vadim is "Vadim B. Mikheev" <vadim@sable.krasnoyarsk.su>
36-
Vivek is Vivek Khera <khera@kci.kciLink.com>
13+
-------------------------------------
14+
* Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
15+
* Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
16+
* Dan is Dan McGuirk <mcguirk@indirect.com>
17+
* Daniel is Daniel Kalchev <daniel@digsys.bg>
18+
* Darren is Darren King <darrenk@insightdist.com>
19+
* Edmund is Edmund Mergl <E.Mergl@bawue.de>
20+
* Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
21+
* Gerhard is Gerhard Reithofer <gerhardr@tech-edv.co.at>
22+
* Igor is Igor <igor@sba.miami.edu>
23+
* Jun is Jun Kuwamura <juk@rccm.co.jp>
24+
* Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com>
25+
* Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de>
26+
* Oleg is Oleg Bartunov <oleg@sai.msu.su>
27+
* Paul is Paul M. Aoki <aoki@CS.Berkeley.EDU>
28+
* Patrick is Patrick van Kleef <pvk@pobox.com>
29+
* Raymond is Raymond Toy <toy@rtp.ericsson.se>
30+
* Soo-Ho Ok <shok@detc.dongeui-tc.ac.kr>
31+
* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at>
32+
* Sven is Sven Verdoolaege <skimo@breughel.ufsia.ac.be>
33+
* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp>
34+
* Thomas is Thomas Lockhart <tgl@mythos.jpl.nasa.gov>
35+
* Vadim is "Vadim B. Mikheev" <vadim@sable.krasnoyarsk.su>
36+
* Vivek is Vivek Khera <khera@kci.kciLink.com>
3737

3838
RELIABILITY
3939
-----------
40-
-Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup(Erich)
41-
-Overhaul bufmgr/lockmgr/transaction manager(Vadim)
42-
Fix CLUSTER
43-
Remove EXTEND?
44-
Fix all NULL features
45-
allow psql to print nulls meaningfully
46-
Fix compile and security of Kerberos/GSSAPI code (Daniel Kalchev?)
47-
COUNT on VIEW always returns zero (maybe because there is no oid for views?)
48-
CREATE VIEW requires super-user priviledge
49-
can lo_export()/lo_import() read/write anywhere, causing a security problem?
50-
Tables that start with xinv confused to be large objects
51-
Two and three dimmensional arrays display improperly, missing {}
52-
Add GROUP BY and HAVING to INSERT INTO table SELECT * FROM table2
53-
lo_unlink() crashes server
54-
Allow variable casts with BETWEEN 'today'::asbtime AND 'today'::abstime
55-
Prevent auto-table reference, like SELECT table.col WHERE col = 3 (?)
56-
Remove un-needed malloc() calls and replace with palloc().
57-
SELECT * FROM table WHERE int4_column = '1' fails
58-
SELECT a[1] FROM test fails, it needs test.a[1]
59-
SELECT COUNT(*) FROM TAB1, TAB2 fails
60-
SELECT SUM(2+2) FROM table dumps core
61-
UPDATE table SET table.value = 3 fails
62-
UPDATE key_table SET keyval=max(reftab.NUM)+1 WHERE tblname='reftab' fails
63-
INSERT INTO ... SELECT DISTINCT ... generates error on DISTINCT
64-
INSERT INTO table SELECT id, count(*) FROM table2 GROUP BY id generate error
40+
* -Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup(Erich)
41+
* -Overhaul bufmgr/lockmgr/transaction manager(Vadim)
42+
* Fix CLUSTER
43+
* Remove EXTEND?
44+
* Fix all NULL features, allow psql to print nulls meaningfully
45+
* Fix compile and security of Kerberos/GSSAPI code (Daniel Kalchev?)
46+
* COUNT on VIEW always returns zero (maybe because there is no oid for views?)
47+
* CREATE VIEW requires super-user priviledge
48+
* can lo_export()/lo_import() read/write anywhere, causing a security problem?
49+
* Tables that start with xinv confused to be large objects
50+
* Two and three dimmensional arrays display improperly, missing {}
51+
* Add GROUP BY and HAVING to INSERT INTO table SELECT * FROM table2
52+
* lo_unlink() crashes server
53+
* Allow variable casts with BETWEEN 'today'::asbtime AND 'today'::abstime
54+
* Prevent auto-table reference, like SELECT table.col WHERE col = 3 (?)
55+
* Remove un-needed malloc() calls and replace with palloc().
56+
* SELECT * FROM table WHERE int4_column = '1' fails
57+
* SELECT a[1] FROM test fails, it needs test.a[1]
58+
* SELECT COUNT(*) FROM TAB1, TAB2 fails
59+
* SELECT SUM(2+2) FROM table dumps core
60+
* UPDATE table SET table.value = 3 fails
61+
* UPDATE key_table SET keyval=max(reftab.NUM)+1 WHERE tblname='reftab' fails
62+
* INSERT INTO ... SELECT DISTINCT ... generates error on DISTINCT
63+
* INSERT INTO table SELECT id, count(*) FROM table2 GROUP BY id generate error
6564

6665
ENHANCEMENTS
6766
------------
68-
Replace table-level locking with row or page-level locking(Vadim)
69-
PRIMARY KEY during table creation
70-
Add SERIAL type
71-
Preserve GRANT/REVOKE/pg_group in pg_dump
72-
Transaction log
73-
More access control over who can create tables and access the database
74-
Add full ANSI SQL capabilities (Stefan)
75-
add subselects, possibility using temporary SQL functions
76-
Implement HAVING clause
77-
Implement EXISTS qualifier
78-
report "Not implemented" if valid syntax is supplied
79-
add OUTER joins, left and right (Thomas)
80-
make VIEWs updateable where possible
81-
add UNIONS, INTERSECTS, SUBTRACTS
82-
add temporary tables
83-
add sql3 recursive unions
84-
add the concept of dataspaces
85-
allow conversion type casts on SELECT target fields
86-
add DECIMAL, NUMERIC, DOUBLE PRECISION, BIT, BIT VARYING
87-
NCHAR (as distinguished from ordinary varchar),
88-
Allow compression of large fields or a compressed field type
89-
Fix the rules system(Jan?,Soo-Ho)
90-
robust
91-
making INSTEAD rules work
92-
add CONSTRAINT
93-
Full set of text operations and functions
94-
word searches, concat,max() on text, char
95-
Large objects
96-
overwriting blocks has problems
97-
there are other problems, too.
98-
Fix large object mapping scheme
99-
not to stuff everything as files in a single directory
100-
Better interface for adding to pg_group
101-
Make MONEY/DECIMAL have a defined precision
102-
Add support for tables >2G, or test current version
103-
Threaded version of the server or libpq
104-
Allow libpq to cancel query requests
105-
Add REGEX internationalization
106-
Add other language types for built-in functions
107-
expand to allow tcl, perl, java,
108-
generalize the function manager switch to pass
109-
function sources to interpreter engines.
110-
remove time-travel feature(Vadim)
111-
reduce system column overhead(Vadmin)
112-
remove pg_time table(Vadim)
113-
allow row re-use without vacuum, maybe?(Vadim)
114-
can't vacuum large objects
115-
can't reduce index file size with vacuum
116-
Remove restriction that ORDER BY field must be in SELECT list(?)
117-
Allow queries about owner of tables, like:
118-
SELECT u.usesysid FROM postgres.pg_user u;
119-
Add word index for text fields, maybe with trigrams, i.e.:
120-
' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox
121-
Allow readline-type or editor command editing of multi-line SQL commands
122-
Populate backend status area and write program to dump status data
123-
Add ALTER TABLE DROP COLUMN feature
124-
Remove stale files upon startup(Vivek)
125-
Add command to show privileges
126-
Allow INSERT INTO ... SELECT to convert column types
127-
Add syslog functionality
128-
Add STDDEV/VARIANCE() function for standard deviation computation/variance
129-
Add table/column/function discription table indexed by oid
130-
add pg_type attribute to identify types that need length (bpchar, varchar)
131-
add UNIQUE capability to non-btree indexes
132-
make large objects have their own reltype
133-
make number of backends a config parameter, storage/sinvaladt.h:MaxBackendId
134-
certain indexes will not shrink, i.e. oid indexes with many inserts
135-
make NULL's come out at the beginning or end depending on the ORDER BY direction
136-
change the library/backend interface to use network byte order
137-
allow unix domain sockets for local connections for performance and security
138-
Add PAGER for psql's \dt and \d tablename
139-
Make timezone set-able by client applications(Thomas)
140-
Restore unused oid's on backend exit if no one else has gotten oids
67+
* Replace table-level locking with row or page-level locking(Vadim)
68+
* PRIMARY KEY during table creation
69+
* Add SERIAL type
70+
* Preserve GRANT/REVOKE/pg_group in pg_dump
71+
* Transaction log
72+
* More access control over who can create tables and access the database
73+
* Add full ANSI SQL capabilities (Stefan)
74+
* add subselects, possibility using temporary SQL functions
75+
* Implement HAVING clause
76+
* Implement EXISTS qualifier
77+
* report "Not implemented" if valid syntax is supplied
78+
* add OUTER joins, left and right (Thomas)
79+
* make VIEWs updateable where possible
80+
* add UNIONS, INTERSECTS, SUBTRACTS
81+
* add temporary tables
82+
* add sql3 recursive unions
83+
* add the concept of dataspaces
84+
* allow conversion type casts on SELECT target fields
85+
* add DECIMAL, NUMERIC, DOUBLE PRECISION, BIT, BIT VARYING
86+
* NCHAR (as distinguished from ordinary varchar),
87+
* Allow compression of large fields or a compressed field type
88+
* Fix the rules system(Jan?,Soo-Ho)
89+
* robust
90+
* making INSTEAD rules work
91+
* add CONSTRAINT
92+
* Full set of text operations and functions
93+
* word searches, concat,max() on text, char
94+
* Large objects
95+
* overwriting blocks has problems
96+
* there are other problems, too.
97+
* Fix large object mapping scheme
98+
* not to stuff everything as files in a single directory
99+
* Better interface for adding to pg_group
100+
* Make MONEY/DECIMAL have a defined precision
101+
* Add support for tables >2G, or test current version
102+
* Threaded version of the server or libpq
103+
* Allow libpq to cancel query requests
104+
* Add REGEX internationalization
105+
* Add other language types for built-in functions
106+
* expand to allow tcl, perl, java,
107+
* generalize the function manager switch to pass
108+
* function sources to interpreter engines.
109+
* remove time-travel feature(Vadim)
110+
* reduce system column overhead(Vadmin)
111+
* remove pg_time table(Vadim)
112+
* allow row re-use without vacuum, maybe?(Vadim)
113+
* can't vacuum large objects
114+
* can't reduce index file size with vacuum
115+
* Remove restriction that ORDER BY field must be in SELECT list(?)
116+
* Allow queries about owner of tables, like:
117+
* SELECT u.usesysid FROM postgres.pg_user u;
118+
* Add word index for text fields, maybe with trigrams, i.e.:
119+
* ' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox
120+
* Allow readline-type or editor command editing of multi-line SQL commands
121+
* Populate backend status area and write program to dump status data
122+
* Add ALTER TABLE DROP COLUMN feature
123+
* Remove stale files upon startup(Vivek)
124+
* Add command to show privileges
125+
* Allow INSERT INTO ... SELECT to convert column types
126+
* Add syslog functionality
127+
* Add STDDEV/VARIANCE() function for standard deviation computation/variance
128+
* Add table/column/function discription table indexed by oid
129+
* add pg_type attribute to identify types that need length (bpchar, varchar)
130+
* add UNIQUE capability to non-btree indexes
131+
* make large objects have their own reltype
132+
* make number of backends a config parameter, storage/sinvaladt.h:MaxBackendId
133+
* certain indexes will not shrink, i.e. oid indexes with many inserts
134+
* make NULL's come out at the beginning or end depending on the ORDER BY direction
135+
* change the library/backend interface to use network byte order
136+
* allow unix domain sockets for local connections for performance and security
137+
* Add PAGER for psql's \dt and \d tablename
138+
* Make timezone set-able by client applications(Thomas)
139+
* Restore unused oid's on backend exit if no one else has gotten oids
141140

142141
PERFORMANCE
143142
-----------
144-
Use indexes in ORDER BY
145-
Allow LIKE/wildcard matches to use indexes if the wildcard character is not first
146-
Optimizing disjunctive queries
147-
Fix bushy-plans (Martin)
148-
Other optimizer bugs
149-
Is fsync use optimized?
150-
Cache most recent query plan(s?)
151-
Shared catalog cache, reduce lseek()'s by caching table size in shared area
152-
Allow compression of log and meta data
153-
Add FILLFACTOR to index creation
154-
Allow indexes to be used with OR clauses(Vadim)
155-
update pg_statistic table to remove operator column
143+
* Use indexes in ORDER BY
144+
* Allow LIKE/wildcard matches to use indexes if the wildcard character is not first
145+
* Optimizing disjunctive queries
146+
* Fix bushy-plans (Martin)
147+
* Other optimizer bugs
148+
* Is fsync use optimized?
149+
* Cache most recent query plan(s?)
150+
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
151+
* Allow compression of log and meta data
152+
* Add FILLFACTOR to index creation
153+
* Allow indexes to be used with OR clauses(Vadim)
154+
* update pg_statistic table to remove operator column
156155

157156
DOCUMENTATION
158157
-------------
159-
Update usermanual source(many)
160-
remove time-travel in documentation(Bruce)
161-
added features used in grammer but not in docs, like :: and CAST
162-
update libpq++ manual page
158+
* Update usermanual source(many)
159+
* remove time-travel in documentation(Bruce)
160+
* added features used in grammer but not in docs, like :: and CAST
161+
* update libpq++ manual page
163162

164163
PORTABILITY
165164
-----------

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