Re: Release changes

What about the interval change in ISO datestyle for zero seconds?

LER


--On Sunday, August 03, 2003 19:30:26 -0400 Bruce Momjian 
<pgman@candle.pha.pa.us> wrote:

>
> Here are the changes for 7.4.  I am looking for any improvements.  This
> will be adjusted as we move through beta.
>
> I need to work on the other sections of a major release, like a
> compatibility section.
>
> -------------------------------------------------------------------------
> --
>
>                                Release Notes
>
>                            7.4 Development Branch
>
>
> Valid as of 2003-08-01.  Update release.sgml later.
>
>
> Server Operation
>
> Allow IPv6 server connections (Nigel Kukard, Johan Jordaan, Bruce, Tom,
> Kurt   Roeckx, Andrew Dunstan)
> Fix SSL to handle errors cleanly (Nathan Mueller)
> SSL protocol security and performance improvements (Sean Chittenden)
> Print lock information when a deadlock is detected (Tom)
> Update /tmp socket files regularly to avoid their removal (Tom)
> Enable PAM for MAC OS X (Aaron Hillegass)
> Make btree indexes fully WAL-safe (Tom)
> Allow btree index compaction and empty page reuse (Tom)
> Fix inconsistent index lookups during split of first root page (Tom)
> Improve free space map allocation logic (Tom)
> Preserve free space information between postmaster restarts (Tom)
> Set proper schema permissions in initdb (Peter)
> Add start time to pg_stat_activity (Neil)
> New code to detect corrupt disk pages;  erase with zero_damaged_pages
> (Tom) New client/server protocol: faster, no username length limit, allow
>   clean exit
> Add transaction status, tableid, columnid to backend protocol (Tom)
> Add new binary I/O protocol (Tom)
> Remove autocommit server setting; move to client applications (Tom)
> New error message wording, error codes, and three levels of error detail
> (Tom)
>
>      _________________________________________________________________
>
> Performance
>
> Add hashing for GROUP BY aggregates (Tom)
> Allow nested loops to be smarter about multicolumn indexes (Tom)
> Allow multi-key hash joins (Tom)
> Improve constant folding (Tom)
> Add ability to inline simple SQL functions (Tom)
> Reduce memory usage for queries using complex functions (Tom)
> Improve GEQO optimizer performance (Tom)
> Allow IN/NOT IN to be handled via hash tables (Tom)
> Improve NOT IN (subquery) performance (Tom)
> Allow most IN subqueries to be processed as joins (Tom)
> Improve reverse index scan performance (Tom)
> Improve optimizer cost computations, particularly for subqueries (Tom)
> Assume WHERE a.x = b.y and b.y = 42 also means a.x = 42 (Tom)
> Allow hash/merge joins on complex joins (Tom)
> Allow hash joins for more data types (Tom)
> Allow join optimization of ANSI joins, disable with join_collapse_limit
> (Tom) Add from_collapse_limit to control conversion of subqueries to
> joins (Tom) Use faster regex code from TCL (Henry Spencer, Tom)
> Use bit-mapped relation sets in the optimizer (Tom)
> Improve backend startup time (Tom)
> Improve trigger/constraint performance (Stephan)
>
>      _________________________________________________________________
>
> Server Configuration
>
> Rename server parameter server_min_messages to log_min_messages (Bruce)
> Rename show_*_stats to log_*_stats (Bruce)
> Rename show_source_port to log_source_port (Bruce)
> Rename hostname_lookup to log_hostname (Bruce)
> Add checkpoint_warning to warn of excessive checkpointing (Bruce)
> Allow the postmaster to preload libraries using preload_libraries (Joe)
> New read-only server parameters for localization (Tom)
> Change debug server log messages to output as DEBUG rather than LOG
> (Bruce) Prevent server log variables from being turned off by non-super
> users (Bruce) log_min_messages/client_min_messages now controls debug_*
> output (Bruce) Add Rendezvous server support (Chris Campbell)
> Add ability to print only slow statements using log_min_duration_statement
>   (Christopher)
> Allow pg_hba.conf to accept netmasks in CIDR format (Andrew Dunstan)
> New is_superuser read-only variable (Tom)
> New server-side parameter log_error_verbosity to control error detail
> (Tom) postgres --help-config now dumps server config variables (Tom)
> Make default shared_buffers 1000 and max_connections 100, if possible
> (Tom) Add pg_settings table to see server settings (Joe)
> Prevent assign_session_authorization() from being confused by
>   all-numeric user names (Tom)
>
>      _________________________________________________________________
>
> Queries
>
> New SQL-standard information schema (Peter)
> Add read-only transactions (Peter)
> Add server variable regex_flavor to control regular expression
>   processing (Tom)
> Allow ORDER BY in FROM subqueries to be honored by outer queries (Tom)
> Print key name in foreign-key violation messages (Dmitry Tkach)
> Allow users to see their own queries in pg_stat_activity (Kevin Brown)
> Allow subquery aggregates to reference upper query columns (?) (Tom)
> Add option to prevent auto-addition of tables referenced in query (Nigel
> J.   Andrews)
> Allow dollar signs in identifiers, except as first character (Tom)
> Allow UPDATE ... SET col = DEFAULT (Rod)
> Allow expressions to be used in LIMIT/OFFSET (Tom)
>
>      _________________________________________________________________
>
> Object Manipulation
>
> Make CREATE SEQUENCE grammar more SQL1999 standards compliant (Neil)
> Add FOR EACH STATEMENT statement-level triggers (Neil Conway)
> Add DOMAIN CHECK constraints (Rod)
> Add ALTER DOMAIN .. SET / DROP NOT NULL, SET / DROP DEFAULT, ADD / DROP
>   CONSTRAINT (Rod)
> Allow zero-column tables (Tom)
> Have ALTER TABLE ... ADD PRIMARY KEY add NOT NULL constraint (Rod)
> Add ALTER DOMAIN OWNER (Rod)
> Add pg_trigger.tgenabled to disable triggers? (Neil)
> Add ALTER TABLE ... WITHOUT OIDS? (Rod)
> Have parser honor foreign-key constraints if created via ALTER TABLE ADD
>   COLUMN? (Tom)
> Add ALTER SEQUENCE to modify min/max/increment/cache/cycle values (Rod)
> Add ALTER TABLE ... CLUSTER ON (Alvaro Herrera)
> Improve DOMAIN automatic type casting (Tom)
> Disallow dollar signs in operator names (Tom)
> Allow SQL200X inheritance syntax LIKE <subtable>, INCLUDING DEFAULTS?
> (Rod) Object owners can allow grantees to grant privilege to others?
>
>      _________________________________________________________________
>
> Utility Commands
>
> Add ON COMMIT PRESERVE ROWS for temp tables (Gavin)
> Allow cursors outside transactions using WITH HOLD (Neil)
> Make MOVE/FETCH 0 actually move/fetch 0 (Bruce)
> Add MOVE ALL to move to end of cursor (Bruce)
> Cause FETCH 1 to return the current cursor row, or zero if at
>   beginning/end of cursor, per SQL spec (Bruce)
> Have MOVE return 0 or 1 depending on cursor position (Bruce)
> Properly handle SCROLL with cursors, or report an error (Tom)
> Implement SQL92-compatible FIRST, LAST, ABSOLUTE n, RELATIVE n options
>    for FETCH and MOVE (Tom)
> Allow EXPLAIN on DECLARE CURSOR (Tom)
> Allow CLUSTER to use index marked as pre-clustered by default (Alvaro
> Herrera) Allow CLUSTER without tablename clusters all tables (Alvaro
> Herrera) Prevent CLUSTER on partial indexes (Tom)
> Allow \r and \r\n termination for COPY files (Bruce)
> Disallow literal carriage return as a data value,
> backslash-carriage-return   and \r still allowed (Bruce)
> COPY changes (binary, \.)? (Tom)
> Recover from COPY IN/OUT failure cleanly (Tom)
> Reduce memory used by COPY (Tom)
> Make TRUNCATE transaction-safe (Rod)
> Multiple pg_dump fixes, including tar format and large objects
> Allow pg_dump to dump specific schemas (Neil)
> Allow pg_dump to preserve column storage characteristics (Christopher)
> Allow pg_dump to preserve CLUSTER characteristics (Christopher)
> Have pg_dumpall use GRANT/REVOKE to dump database-level permissions (Tom)
> Allow pg_dumpall to support the -a, -s, -x options of pg_dump (Tom)
> Prevent pg_dump from lowercasing identifiers specified on the command
> line (Tom) Allow EXPLAIN EXECUTE (Neil)
> Allow pg_get_constraintdef() to support UNIQUE, PRIMARY KEY and
>   CHECK constraints (Christopher)
> Improve VACUUM performance on indexes by reducing WAL traffic (Tom)
> Allow pg_ctl to better handle non-standard ports (Greg)
> Functional indexes now support indexes on column expressions (Tom)
> Syntax errors now reported as 'syntax error' rather than 'parse error'
> (Tom) Have SHOW TRANSACTION_ISOLATION match input to SET
> TRANSACTION_ISOLATION (Tom) Have COMMENT ON DATABASE on non-local
> database generate a warning (Tom)
>
>      _________________________________________________________________
>
> Data Types and Functions
>
> New extra_float_digits server parameter to control float precision display
>   (Pedro Ferreira, Tom)
> Allow +1300 as a numeric timezone specifier, for FJST (Tom)
> Remove rarely used oidrand(), oidsrand(), and userfntest() functions
> (Neil) Add md5() function to main server, already in /contrib/pgcrypto
> (Joe) Increase date range of timestamp (John Cochran)
> Change EXTRACT(EPOCH FROM timestamp) so timestamp without time zone
>  is assumed to be in local time, not GMT (Tom)
> Trap division by zero in case the operating system doesn't prevent it
> (Tom) Change the NUMERIC data type internally to base 10000 (Tom)
> New hostmast() function (Greg Wickham)
> Fixes for to_char() (Karel)
> Allow functions that can take any argument data type and return
>   any data type, using ANYELEMENT and ANYARRAY (Joe)
> Arrays may now be specified as ARRAY[1,2,3], ARRAY[['a','b'],['c','d']],
>   or ARRAY[ARRAY[ARRAY[2]]] (Joe)
> Allow proper comparisons for arrays (Joe)
> Allow indexes on array columns, and used in ORDER BY and DISTINCT (Joe)
> Allow WHERE qualifications of the form 'col IN/ANY/SOME/ALL (array) (?)
> (Joe) Allow SQL functions to return arrays and take them as params (Joe)
> Allow array concatenation with '||' and normal array comparisons (Joe)
> New array functions array_append(), array_cat(), array_lower(),
>   array_prepend(), array_to_string(), array_upper(), string_to_array()
> (Joe) Allow assignments to empty arrays (Joe)
> Allow 60 in seconds fields of timestamp, time, interval input values (Tom)
> Allow PREPARE/bind of utility commands like FETCH and EXPLAIN (Tom)
> Allow CIDR data type to be cast to text (Tom)
> Allow the creation of special LIKE indexes for non-C locales (Peter)
> Disallow invalid timezone names (Tom)
> Trim trailing spaces when CHAR() data is cast to VARCHAR or TEXT (Tom)
> Make FLOAT(p) measure the precision p in bits, not decimal digits (Tom)
> Add IPv6 support to the inet and cidr data types (Michael Graff)
> Add family() function to report whether address is IPv4 or IPv6 (Michael
> Graff) Have SHOW DATESTYLE generate output similar to that used by SET
> DATESTYLE (Tom) Change DATESTYLE to output its value in a more common
> format (Tom) Make EXTRACT(TIMEZONE) and SET/SHOW TIMEZONE follow the SQL
> convention   for the sign of timezone offsets, ie, positive is east from
> UTC (Tom) Fix date_trunc('quarter',...) (B?jthe Zolt?n)
> Make initcap() more compatible with Oracle (Mike Nolan)
> Honor only DateStyle setting for date entry without a four-digit year
> (Greg) Add new DateStyle values MDY, DMY, and YMD, honor US and European
> for   backward compatibility (Tom)
> 'now' will no longer work as a default, use now() (change required for
> prepared   statements) (Tom)
> Assume NaN value to be larger than any other value in comparisons (Tom)
>
>      _________________________________________________________________
>
> Server-side Languages
>
> Prevent PL/pgSQL crash when RETURN NEXT is used on a zero-row record (Tom)
> Make PL/python's spi_execute interface handle NULLs properly (Andrew
> Bosma) Allow PL/pgSQL to declare variables of composite types without
> %ROWTYPE (Tom) Fix PL/python _quote() function to handle big integers (?)
> Make PL/python an untrusted language, now called plpythonu (Kevin Jacobs,
> Tom) Change PL/pgSQL EXECUTE INTO to CREATE TABLE AS EXECUTE? (Peter)
>
>      _________________________________________________________________
>
> Psql
>
> Add "\pset pager always" to always use pager (Greg)
> Improve tab completion (Rod, Ross Reedstrom, Ian Barwick)
> Reorder \? help into groupings (Harald Armin Massa, Bruce)
> Add schema, cast, and conversion backslash commands (Christopher)
> \encoding now tracks client_encoding server variable (Tom)
> Save edit history into readline history (Ross)
> Improve \d display (Christopher)
> Enhance HTML mode to be more standards-compliant (Greg)
> New '\set autocommit off' capability (Tom)
> New '\set verbosity' to control error detail (Tom)
> New  %T prompt string to show transaction status (Tom)
>
>      _________________________________________________________________
>
> Libpq
>
> Allow PQcmdTuples() to return row counts for MOVE and FETCH (Neil)
> Add PQfreemem() for freeing memory on Win32, suggest for NOTIFY (Bruce)
> Document service capability, and add sample file (Bruce)
> Make PQsetdbLogin() have the same defaults as PQconnectdb() (Tom)
> Allow libpq to cleanly fail when result sets are too large (Tom)
> Improve performance of PGunescapeBytea() (Ben Lamb)
> Allow threaded with --enable-thread-safety (Lee Kindness, Bruce)
> Allow pqInternalNotice() to accept a format string and args instead of
>   just a preformatted message (Tom, Sean Chittenden)
> Allow control SSL negotiation with sslmode values "disable", "allow",
>   "Prefer", and "require" (Jon Jensen)
>
>      _________________________________________________________________
>
> JDBC
>
> Allow setNull on updateable resultsets
> Allow executeBatch on a prepared statement (Barry)
> Support SSL connections (Barry)
> Handle schema names in result sets (Paul Sorenson)
> Add refcursor support (Nic Ferrier)
>
>      _________________________________________________________________
>
> Miscellaneous Interfaces
>
> Prevent possible memory leak or core dump during libpgtcl shutdown (Tom)
> Add ecpg Informix compatibility (Michael)
> Add ecpg DECIMAL type that is fixed length, for Informix (Michael)
> Allow threaded ecpg with --enable-thread-safety (Lee Kindness, Bruce)
> Allow client interfaces to compile under MinGW/win32 (Bruce)
> Move python client interface to http://www.pygresql.org (Marc)
>
>      _________________________________________________________________
>
> Source Code
>
> Prevent need for separate platform geometry regression result files (Tom)
> Improved PPC locking primitive (Reinhard Max)
> Embed LD_LIBRARY_PATH used for build process into binaries (Billy)
> New palloc0 to allocate and clear memory (Bruce)
> Fix locking code for s390x CPU (64-bit) (Tom)
> Allow OpenBSD to use local indent credentials (William Ahern)
> Allow read-only query plans (Tom)
> Add Darwin startup scripts (David Wheeler)
> Allow libpq to compile with Borland C++ compiler (Lester Godwin, Karl
> Waclawek) Use our own version of getopt_long() if needed (Peter)
> Convert administration scripts to C (Peter)
> Bison >=1.85 is now required for grammar changes
> Merge documentation into one book (Peter)
> Add Win32 compatibility functions (Bruce)
> New ereport() function for error reporting (Tom)
> Support Intel Linux compiler (Peter)
> Improve Linux startup scripts (Slawomir Sudnik, Darko Prenosil)
> Add support for AMD Opteron and Itanium (Jeffrey W. Baker, Bruce)
>
>      _________________________________________________________________
>
> Contrib
>
> Change dbmirror license to BSD
> Improve earthdistance (Bruno Wolff III)
> Portability improvements to pgcrypto (Marko Kreen)
> Prevent xml crash (John Gray, Michael Richards)
> Upgrade oracle
> Upgrade mysql
> Update cube (Bruno Wolff III)
> Update earthdistance to use cube (Bruno Wolff III)
> Update btree_gist (Oleg)
> Add hashes to tablefuncs (Joe)
> New pg_autovacuum allows automatic VACUUM (Matthew T. O'Connor)
> Allow pgbench to honor PGHOST, PGPORT, PGUSER env. variables (Tatsuo)
> Improve intarray (Teodor Sigaev)
> Improve pgstattuple (Rod)
> Fix second argument to metaphone() in fullystrmatch
> Add named persistent connections to dblink (Shridhar Daithanka)
> Improve adddepend (Rod)
> Update spi/timetravel (B?jthe Zolt?n)
> Fix dbase -s option (Thomas Behr)



-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 972-414-9812                 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749