TODO list for PostgreSQL
========================
-Last updated: Sat Feb 28 10:00:29 EST 1998
+Last updated: Sun Mar 1 00:18:59 EST 1998
Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
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* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
* Overhaul bufmgr/lockmgr/transaction manager
-* -Fix CLUSTER
* Remove EXTEND?
-* -Aggregates on VIEW always returns zero (maybe because there is no oid for views?)
* CREATE VIEW requires super-user priviledge
* Can lo_export()/lo_import() read/write anywhere, causing a security problem?
* Tables that start with xinv confused to be large objects
* Two and three dimmensional arrays display improperly, missing {}
-* -Add GROUP BY to INSERT INTO table SELECT * FROM table2
+* GROUP BY in INSERT INTO table SELECT * FROM table2 fails
* lo_unlink() crashes server
* Prevent auto-table reference, like SELECT table.col WHERE col = 3 (?)
-* -Remove un-needed malloc() calls and replace with palloc().
* SELECT * FROM table WHERE int4_column = '1' fails
* SELECT a[1] FROM test fails, it needs test.a[1]
-* -SELECT COUNT(*) FROM TAB1, TAB2 fails
-* -SELECT SUM(2+2) FROM table dumps core
* UPDATE table SET table.value = 3 fails
-* -UPDATE key_table SET keyval=count(reftab.num) fails
-* -INSERT INTO ... SELECT DISTINCT ... does not accept DISTINCT
* Make pg_dump preserve inheritance column order, do non-inherits first
* User who can create databases can modify pg_database table
* optimizer memory exhaustion with many OR's
ENHANCEMENTS
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* Replace table-level locking with row or page-level locking(Vadim)
-* -PRIMARY KEY during table creation(Thomas)
* Add SERIAL type
-* -Preserve GRANT/REVOKE/pg_group in pg_dump
* Transaction log, so re-do log can be on a separate disk
* Allow transaction commits with rollback with no-fsync performance
* More access control over who can create tables and access the database
* Add full ANSI SQL capabilities
- * -add subselects(Vadim)
* Implement HAVING clause
- * -Implement EXISTS qualifier
- * -report "Not implemented" if valid syntax is supplied
* add OUTER joins, left and right (Thomas)
* make VIEWs updateable where possible
- * -add UNIONS(Bruce)
* add INTERSECTS, SUBTRACTS
* add temporary tables(Bruce)
* add sql3 recursive unions
* Full set of text operations and functions
* word searches, concat,max() on text, char
* Large objects
- * -overwriting blocks has problems(Peter)
- * -there are other problems, too.(Peter)
* Fix large object mapping scheme, own reltype
* not to stuff everything as files in a single directory
* Better interface for adding to pg_group
* Threaded version of the server or libpq
* Allow libpq to cancel query requests
* Add REGEX internationalization
-* -Add other language types for built-in functions
- * expand to allow tcl, perl, java
- * generalize the function manager switch to pass
- * function sources to interpreter engines.
-* -remove time-travel feature(Vadim)
-* -reduce system column overhead(Vadmin)
-* -remove pg_time table(Vadim)
* allow row re-use without vacuum, maybe?(Vadim)
* Remove restriction that ORDER BY field must be in SELECT list
* Add word index for text fields, maybe with trigrams, i.e.:
* Allow INSERT INTO ... SELECT to convert column types
* Add syslog functionality(Marc)
* Add STDDEV/VARIANCE() function for standard deviation computation/variance
-* -Add table/column/function discription table indexed by oid
-* -add pg_type attribute to identify types that need length (bpchar, varchar)
* add UNIQUE capability to non-btree indexes
* make number of backends a config parameter, storage/sinvaladt.h:MaxBackendId
* certain indexes will not shrink, i.e. oid indexes with many inserts
* make NULL's come out at the beginning or end depending on the ORDER BY direction
* change the library/backend interface to use network byte order
-* -allow unix domain sockets for local connections for performance and security
-* -Add PAGER for psql's \dt, \d, \z tablename
-* -Make timezone set-able by client applications(Thomas)
* Restore unused oid's on backend exit if no one else has gotten oids
* remove non-standard types from the system, and make them loadable
-* -make reads queue behind a write waiting for a lock(Bruce)
-* -add LOCK statement(Bruce)
-* -add report of offending line when COPY command fails
* have UPDATE/DELETE clean out indexes
-* -allow varchar() to only store used bytes, not maximum
* allow WHERE restriction on ctid
* allow pg_descriptions when creating types, tables, columns, and functions
* Fix compile and security of Kerberos/GSSAPI code
* Allow psql to print nulls as distinct from ""(?)
* Allow variable casts with BETWEEN 'today'::asbtime AND 'today'::abstime
-* -Allow VIEW permissions to be set separately from the underlying tables
* Allow INSERT INTO ... SELECT ... FROM view to work
* Allow text, char(), and varchar() overhead to be only 2 bytes, not 4 bytes
* Make VACUUM on database not lock pg_class
PERFORMANCE
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* Use indexes in ORDER BY, min(), max()(Costin Oproiu)
-* -Allow LIKE/wildcard matches to use indexes if the wildcard character is not first
* Optimizing disjunctive queries
* Fix bushy-plans (Martin)
* Other optimizer bugs
Security features in pg_hba.conf enhanced and documented, many cleanups(Phil)
CHAR() now faster access than VARCHAR() or TEXT
ecpg embedded SQL preprocessor
-Add GROUP BY to INSERT INTO table SELECT * FROM table2
Reduce system column overhead(Vadmin)
Remove pg_time table(Vadim)
Add pg_type attribute to identify types that need length (bpchar, varchar)
For security, use GRANT/REVOKE on views as appropriate(Jan)
Tables now have no default GRANT SELECT TO PUBLIC. You must
explicitly grant such permissions.
+Clean up tutorial examples(Darren)
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