new TODO.

Author: bmomjian

doc/TODO

@@ -1,121 +1,145 @@
-From scrappy@ki.net Tue Aug  6 19:57:11 1996
-Status: RO
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-From: Bruce Momjian <maillist@candle.pha.pa.us>
-Message-Id: <199608062357.TAA11618@candle.pha.pa.us>
-Subject: add TODO to distribution
-To: scrappy@ki.net (Marc G. Fournier)
-Date: Tue, 6 Aug 1996 19:57:36 -0400 (EDT)
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-
-Here is the current TODO list.  Let's add it to the next distribution. 
-This was not ready at the time of the 1.02 release.
-
----------------------------------------------------------------------------
-
-
-=================================================
+====================================================
 TODO list (FAQ) for Postgres95
-==================================================
-last updated:		Mon Aug  5 21:00:12 EDT 1996
+====================================================
+last updated:		Thu Oct  3 17:59:06 EDT 1996
 
 current maintainer:	Bruce Momjian (maillist@candle.pha.pa.us)
-original author:	Jolly Chen (jolly@cs.berkeley.edu)
 
+The most recent version of this document can be viewed at
+the postgres95 WWW site, http://www.ki.net/postgres95.
+
+Dashed items(-) are being worked on or are ready for the 2.0 release.
 
 RELIABILITY
 -----------
-Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
-Memory leaks (hunt and destroy with tools like Purify)
-	fix unitialized reads of memory
-	fix array over-runs of memory writes
-Re-visit and fix vacuum
-	can't vacuum large objects
-        can't shrink tables, pg_time and pg_log
+-Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
+-Overhaul bufmgr/lockmgr/transaction manager
+-	remove -S (stable memory) option or fix memory manager
+-Memory leaks (hunt and destroy with tools like Purify)
+-	fix unitialized reads of memory
+-	fix array over-runs of memory writes
+-Fix CLUSTER
+-Prevent improper index creation
+-Change default decimal constant representation from float4 to float8
+-Allow libpq to distinguish between text value '' and null
+-	using null bitmask returned from backend?
 Fix all NULL features
-DROP AGGREGATE should take in basetype as an arg
-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.
-Fix large object mapping scheme
-	not to stuff everything as files in a single directory
-Fix CLUSTER
-Prevent improper index creation
-Starting quote in insert string errors
-Change default decimal constant representation from float4 to float8
+	allow psql to print nulls meaningfully
+-Starting quote in insert string errors
 ALTER TABLE bug - running postgress process needs to re-read table definition
-Allow libpq to distinguish between text value '' and null
 Allow non-postgres users with createdb privs to destroydb's
-
-PERFORMANCE
------------
-Optimizing disjunctive queries
-Other optimizer bugs
-Is fsync use optimized?
-Multi-representational types, a la Illustra. For example, have a
-       text type that is stored in-tuple when less than 8K and in large
-       objects, when greater than 8K.
+Prevent SELECT NULL from crashing server
+	(error on first attempt, crash after another query)
+-Fix elusive btree range/non-range bug
+-Remove duplicate system catalog info or report mismatches
+Fix compile and security of Kerberos V code
+-Remove duplicate OIDS in system tables
+Dropping a table twice causes corruption, drop/create not rollback-able
+Change index creation to process deleted and current rows
 
 ENHANCEMENTS
 ------------
 Add full ANSI SQL capabilities ( a vendor has offered to help)
-	add subselects
+	add subselects, possibility using temporary SQL functions
+	Implement HAVING clause
+	Implement IN qualifier
+	Implement EXISTS qualifier
+	Implement BETWEEN qualifier
+	add synonym of != for <>
 	column constraints (using rules), esp. primary keys
-	add DEFAULT, UNIQUE, RESTRAINT, and CHECK capabilities
+	add DEFAULT, RESTRAINT, and CHECK capabilities
+	-add UNIQUE index capability
 	report "Not implemented" if valid syntax is supplied
-	add OUTER joins
+	add OUTER joins, left and right
 	make VIEWs updateable where possible
 	add UNIONS, INTERSECTS, SUBTRACTS
 	add temporary tables
 	add assertions
 	add domains
 	add sql3 recursive unions
 	add the concept of dataspaces
-	Implement HAVING clause
-	Implement IN qualifier
-Add a way to preserve oid's when doing dump and load
-	if not, make oid's accessable in insert rules
-Add word index for text fields, maybe with trigrams, i.e.:
-    ' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox
+	allow conversion type casts on select target fields
 Allow compression of large fields or a compressed field type
 Fix the rules system
 	robust
 	making INSTEAD rules work
 Full set of text operations and functions
 	word searches, concat, upper/lower(), max() on text, char
-Replace table-level locking with row or page-level locking
+-Replace table-level locking with row or page-level locking
 Large objects
 	overwriting blocks has problems
 	there are other problems, too.
+	Fix large object mapping scheme
+	not to stuff everything as files in a single directory
 Better interface for adding to pg_group
 Make multi-field indexes easier to create
 	allow optimizer to effectively use parameters without accessing table
-Improve debugging output
 Add int8 type
 Add table comments
 Add support for tables >2G
 Incorporate the PERL PG95 interface library into source tree
 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.
+-Re-visit and fix vacuum
+-	can't vacuum large objects
+-       can't shrink tables, pg_time and pg_log
+-	allow actual compression, not just reuse on the same page
+-	allow vacuum to be run on one table or entire database
+	split apart row removal function from statistics function
+	allow time-travel to be turned off so superceeded/deleted row are reused
+-Reverse meaning of HBA masks
+Add hostname/user level access control rather than just hostname and user
+Allow BY,ORDER BY to specify columns by number, or by non-alias table.column
+Allow GROUP BY to use alias column name
+Remove restriction that ORDER BY field must be in SELECT list?
+Allow queries about owner of datbases, tables like:
+        SELECT u.usesysid FROM postgres.pg_user u;
+DROP AGGREGATE should take in basetype as an arg
+Add word index for text fields, maybe with trigrams, i.e.:
+    ' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox
+Add common-sense constant type promotions
+-Allow uppercase agregates by lowercasing function names on input
+Allow readline-type or editor command editing of multi-line SQL commands
+Allow pg_dump to dump all databases at a site in one command
+-Allow restriction on who can create C functions
+Allow restriction on who can create copy tables
+-Allow installation-configuration option to auto-add all local users
+Allow function result to be used in GROUP BY
+-Fontend COPY
+-Secure Authentication of local users
+-Idend authentication of local users
+
+PERFORMANCE
+-----------
+Optimizing disjunctive queries
+Other optimizer bugs
+Is fsync use optimized?
+Multi-representational types, a la Illustra. For example, have a
+       text type that is stored in-tuple when less than 8K and in large
+       objects, when greater than 8K.
+Use indexes in ORDER BY
+Profile engine in INSERT's and other operations
+Speed up hash creation by using btree's fast sort/insert routines
+Cache most recent query plan(s?)
+Allow compression of log and meta data
+Allow LIKE/wildcard matches to use indexes if the wildcard character is not first
 
 DOCUMENTATION
 -------------
-Better documentation. Write a real book on postgres, perhaps?
-Document OPENLINK fsync patch
 Update usermanual source
 Reduce size of regression diffs
 
 PORTABILITY
 -----------
 Windows NT port
 	Mariposa project at Berkeley has a person who's working on this
+Win95 port, use GNU port or remove it?
 Binary distributions for linux
 Merge bsdi_2_1 to bsdi
 Merge i386_solaris and sparc_solaris into solaris
-
+Switch from PORTNAME to individual feature defines (use configure/autoconf?)