Add 7.1 features list
This commit is contained in:
Bruce Momjian
parent
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commit
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207
HISTORY
207
HISTORY
@ -1,6 +1,213 @@
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------------------------------------------------------------------------
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Release Notes
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------------------------------------------------------------------------
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Release 7.1
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This release focuses on removing limitations that have existed in the
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PostgreSQL code for many years.
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Major changes in this release:
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Write-ahead Log(WAL) - To maintain database consistency in case
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of an operating system crash, previous releases of PostgreSQL have
|
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forced all data modifications to disk before each transaction commit.
|
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With WAL, only one log file must be flushed to disk, greatly improving
|
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performance. If you have been using -F in previous releases to disable
|
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disk flushes, you may want to consider discontinuing its use.
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TOAST - Previous releases had an 8k (or 32k) row length limit.
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This limit made storage of long text fields difficult. With TOAST, long
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rows of any length can be stored with good performance.
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Outer Joins - We now support outer joins. The UNION/NOT IN
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workaround for outer joins is no longer required. We use the SQL92
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outer join syntax.
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|
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Function Manager - The previous C function manager did not
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handle NULLs properly, nor did it support 64-bit CPU's. The new
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function manager does. You can continue using your old custom
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functions, but you may want to rewrite them in the future to use the new
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function manager call interface.
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Complex Queries - A large number of complex queries that were
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unsupported in previous releases now work. Many combinations of views,
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aggregates, UNION, LIMIT, cursors, subqueries, and inherited tables
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now work properly. Inherited tables are now accessed by default.
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Subqueries in FROM are now supported.
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Migration to v7.0
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A dump/restore using pg_dump is required for those wishing to migrate
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data from any previous release.
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Last updated from CVS logs: 2000-12-11
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Bug Fixes
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---------
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Many multi-byte/Unicode/locale fixes (Tatsuo and others)
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More reliable ALTER TABLE RENAME (Tom)
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Kerberos V fixes (David Wragg)
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Fix for INSERT INTO...SELECT where targetlist has subqueries (Tom)
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Prompt username/password on standard error (Bruce)
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Large objects inv_read/inv_write fixes (Tom)
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Fixes for to_char(), to_date(), to_ascii(), and to_timestamp() (Karel,
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Daniel Baldoni)
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Prevent query expressions from leaking memory (Tom)
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Allow UPDATE of arrays elements (Tom)
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Wake up lock waiters during cancel (Hiroshi)
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Fix rare cursor crash when using hash join (Tom)
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Fix for DROP TABLE/INDEX in rolled-back transaction (Hiroshi)
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Fix psql crash from \l+ if MULTIBYTE enabled (Peter E)
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Fix truncation of rule names during CREATE VIEW (Ross Reedstrom)
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Fix PL/perl (Alex Kapranoff)
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Disallow LOCK on views (Mark Holloman)
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Disallow INSERT/UPDATE/DELETE on views (Mark Holloman)
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Disallow DROP RULE, CREATE INDEX, TRUNCATE on views (Mark Holloman)
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Allow PL/pgSQL accept non-ASCII identifiers (Tatsuo)
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Allow views to proper handle GROUP BY, aggregates, DISTINCT (Tom)
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Fix rare failure with TRUNCATE command (Tom)
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Allow UNION/INTERSECT/EXCEPT to be used with ALL, subqueries, views,
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DISTINCT, ORDER BY, SELECT...INTO (Tom)
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Fix parser failures during aborted transactions (Tom)
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Allow temporary relations to properly clean up indexes (Bruce)
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Fix VACUUM problem with moving rows in same page (Tom)
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Modify pg_dump so it dumps only user-defined items, not system-defined (Philip)
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Allow LIMIT in VIEW (Tom)
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Require cursor FETCH to honor LIMIT (Tom)
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Allow PRIMARY/FOREIGN Key definitions on inherited columns (Stephan)
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Allow ORDER BY, LIMIT in sub-selects (Tom)
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Allow UNION in CREATE RULE (Tom)
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Make DROP TABLE rollback-able (Tom)
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Store initdb collation in pg_control so collation cannot be changed (Tom)
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Fix INSERT...SELECT with rules (Tom)
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Fix FOR UPDATE inside views and subselects (Tom)
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Fix OVERLAPS operators conform to SQL92 spec regarding NULLs (Tom)
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Fix lpad() and rpad() to handle length less than input string (Tom)
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Enhancements
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------------
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Add OUTER JOINs (Tom)
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Function manager overhaul (Tom)
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Allow ALTER TABLE RENAME on indexes(Tom)
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Improve CLUSTER(Tom)
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Improve ps status display for more platforms(Marc)
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Improve CREATE FUNCTION failure message(Ross)
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JDBC improvements (Peter, Travis Bauer, Christopher Cain, William Webber,
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Gunnar)
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Grand Unified Configuration scheme/GUC. Many options can now be set in
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data/postgresql.conf, postmaster/postgres flags, or SET commands (Peter E)
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Improved handling of file descriptor cache (Tom)
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New warning code about auto-created table alias entries (Bruce)
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Overhaul initdb process (Tom, Peter E)
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Overhaul of inherited tables; inherited tables now accessed by default;
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new ONLY keyword prevents it (Chris Bitmead, Tom)
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ODBC cleanups/improvements (Nick Gorham, Stephan Szabo, Zoltan Kovacs,
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Michael Fork)
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Allow renaming of temp tables (Tom)
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Overhaul memory manager contexts (Tom)
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pg_dump uses CREATE USER or CREATE GROUP rather using COPY (Peter E)
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Overhaul pg_dump (Philip Warner)
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Allow pg_hba.conf secondary password file to specify username (Peter E)
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Allow TEMPORARY or TEMP keyword when creating temporary tables (Bruce)
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New memory leak checker (Karel)
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New SET SESSION CHARACTERISTICS and SET DefaultXactIsoLevel (Thomas, Peter E)
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Allow nested block comments (Thomas)
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Add WITHOUT TIME ZONE type qualifier (Thomas)
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New ALTER TABLE ADD CONSTRAINT (Stephan)
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Use NUMERIC accumulators for INTEGER aggregates (Tom)
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Overhaul aggregate code (Tom)
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New VARIANCE and STDDEV() aggregates
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Improve dependency ordering of pg_dump (Philip)
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New pg_restore command (Philip)
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New pg_dump tar output option (Philip)
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New pg_dump of large objects (Philip)
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New ESCAPE option to LIKE (Thomas)
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New case-insensitive LIKE - ILIKE (Thomas)
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Allow functional indexes to use binary-compatible type (Tom)
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Allow SQL functions to be used in more contexts (Tom)
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New pg_config utility (Peter E)
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New PL/pgSQL EXECUTE command which allows dynamic SQL and utility statements
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(Jan)
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New PL/pgSQL GET DIAGNOSTICS statement for SPI value access (Jan)
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New quote_identifiers() and quote_literal() functions (Jan)
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New ALTER TABLE table OWNER TO user command (Mark Holloman)
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Allow subselects in FROM, i.e. FROM (SELECT ...) [AS] alias (Tom)
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Update PyGreSQL to version 3.1 (D'Arcy)
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Store tables as files named by OID (Vadim)
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New SQL function setval(seq,val,bool) for use in pg_dump (Philip)
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New pg_service.conf file (Mario Weilguni)
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Require DROP VIEW to remove views, no DROP TABLE (Mark)
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Allow DROP VIEW view1, view2 (Mark)
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Allow multiple objects in DROP INDEX, DROP RULE, and DROP TYPE (Tom)
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Allow automatic conversion to Unicode (Tatsuo)
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New /contrib/pgcrypto hashing functions (Marko Kreen)
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New pg_dumpall --accounts-only option (Peter E)
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New CHECKPOINT command for WAL which creates new WAL log file (Vadim)
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New AT TIME ZONE syntax (Thomas)
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Allow location of Unix domain socket to be configurable (David J. MacKenzie)
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Allow postmaster to listen on a specific IP address (David J. MacKenzie)
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Allow socket path name to be specified in hostname by using leading slash
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(David J. MacKenzie)
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Allow CREATE DATABASE to specify template database (Tom)
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New template0 database that contains no user additions(Tom)
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Types
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-----
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Fix INET/CIDR type ordering and add new functions (Tom)
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Make OID behave as an unsigned type (Tom)
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Allow BIGINT as synonym for INT8 (Peter E)
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New int2 and int8 comparison operators (Tom)
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New BIT and BIT VARYING types (Adriaan Joubert, Tom)
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CHAR() no longer faster than VARCHAR() because of TOAST (Tom)
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Performance
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-----------
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Write-Ahead Log (WAL) to provide crash recovery with less performance
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overhead (Vadim)
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ANALYZE stage of VACUUM no longer exclusively locks table (Bruce)
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Reduced file seeks (Denis Perchine)
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Improve BTREE code for duplicate keys (Tom)
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Store all large objects in a single operating system file (Denis Perchine, Tom)
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Improve memory allocation performance (Karel, Tom)
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Source Code
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-----------
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New function manager call conventions (Tom)
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SGI portability fixes (David Kaelbling)
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New configure --enable-syslog option (Marc)
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New BSDI README (Bruce)
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configure script moved to top level, not /src (Peter E)
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Makefile/configuration/compilation cleanups (Peter E)
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New configure --with-python option (Peter E)
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Solaris cleanups (Peter E)
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Overhaul /contrib Makefiles (Karel)
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New OpenSSL configuration option (Magnus, Peter E)
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AIX fixes (Andreas)
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New heap_open(), heap_openr() API (Tom)
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Remove colon and semi-colon operators (Thomas)
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New pg_class.relkind value for views (Mark Holloman)
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Rename ichar() to chr() (Karel)
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New documentation for btrim(), ascii(), chr(), repeat() (Karel)
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Fixes for NT/Cygwin (Pete Forman)
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AIX port fixes (Andreas)
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New BeOS port (David Reid, Cyril Velter)
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Add proofreader's changes to docs (Addison-Wesley, Bruce)
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New Alpha spinlock code (Adriaan Joubert, Compaq)
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Unixware port overhaul (Peter E)
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New Darwin/Mac OSX port (Bruce Hartzler)
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New FreeBSD Alpha port (Alfred)
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Overhaul shared memory segments (Tom)
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Add IBM S/390 support (Neale Ferguson)
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------------------------------------------------------------------------
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Release 7.0.3
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Release Notes
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------------------------------------------------------------------------
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Release 7.0.3
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@ -1,10 +1,287 @@
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<!--
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$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.63 2000/11/12 14:26:48 momjian Exp $
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$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.64 2000/12/16 20:12:42 momjian Exp $
|
||||
-->
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||||
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<chapter id="release">
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<title>Release Notes</title>
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<sect1>
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<title>Release 7.1</title>
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||||
<!--
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||||
<docinfo>
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<authorgroup>
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||||
<author>
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<firstname>Bruce</firstname>
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||||
<surname>Momjian</surname>
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||||
</author>
|
||||
</authorgroup>
|
||||
<date>2000-12-16</date>
|
||||
</docinfo>
|
||||
-->
|
||||
|
||||
<para>
|
||||
Release date 2001-1-??.
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||||
This release focuses on removing limitations that have existed in the
|
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PostgreSQL code for many years.
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</para>
|
||||
|
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<para>
|
||||
Major changes in this release:
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<variablelist>
|
||||
<varlistentry>
|
||||
<term>
|
||||
Write-ahead Log(WAL)
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</term>
|
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<listitem>
|
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<para>
|
||||
To maintain database consistency in case
|
||||
of an operating system crash, previous releases of PostgreSQL have
|
||||
forced all data modifications to disk before each transaction commit.
|
||||
With WAL, only one log file must be flushed to disk, greatly improving
|
||||
performance. If you have been using -F in previous releases to disable
|
||||
disk flushes, you may want to consider discontinuing its use.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
||||
<varlistentry>
|
||||
<term>
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TOAST
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</term>
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<listitem>
|
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<para>
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Previous releases had an 8k (or 32k) row length limit.
|
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This limit made storage of long text fields difficult. With TOAST, long
|
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rows of any length can be stored with good performance.
|
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</para>
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</listitem>
|
||||
</varlistentry>
|
||||
|
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<varlistentry>
|
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<term>
|
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Outer Joins
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||||
</term>
|
||||
<listitem>
|
||||
<para>
|
||||
We now support outer joins. The UNION/NOT IN
|
||||
workaround for outer joins is no longer required. We use the SQL92
|
||||
outer join syntax.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
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<varlistentry>
|
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<term>
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Function Manager
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</term>
|
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<listitem>
|
||||
<para>
|
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The previous C function manager did not
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||||
handle NULLs properly, nor did it support 64-bit CPU's. The new
|
||||
function manager does. You can continue using your old custom
|
||||
functions, but you may want to rewrite them in the future to use the new
|
||||
function manager call interface.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
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<varlistentry>
|
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<term>
|
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Complex Queries
|
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</term>
|
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<listitem>
|
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<para>
|
||||
A large number of complex queries that were
|
||||
unsupported in previous releases now work. Many combinations of views,
|
||||
aggregates, UNION, LIMIT, cursors, subqueries, and inherited tables
|
||||
now work properly. Inherited tables are now accessed by default.
|
||||
Subqueries in FROM are now supported.
|
||||
</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
|
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</variablelist>
|
||||
</para>
|
||||
|
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<sect2>
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<title>Migration to v7.1</title>
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||||
|
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<para>
|
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A dump/restore using pg_dump is required for those wishing to migrate
|
||||
data from any previous release.
|
||||
</para>
|
||||
</sect2>
|
||||
|
||||
<sect2>
|
||||
<title>Changes</title>
|
||||
|
||||
<para>
|
||||
<programlisting>
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Last updated from CVS logs: 2000-12-11
|
||||
|
||||
Bug Fixes
|
||||
---------
|
||||
Many multi-byte/Unicode/locale fixes (Tatsuo and others)
|
||||
More reliable ALTER TABLE RENAME (Tom)
|
||||
Kerberos V fixes (David Wragg)
|
||||
Fix for INSERT INTO...SELECT where targetlist has subqueries (Tom)
|
||||
Prompt username/password on standard error (Bruce)
|
||||
Large objects inv_read/inv_write fixes (Tom)
|
||||
Fixes for to_char(), to_date(), to_ascii(), and to_timestamp() (Karel,
|
||||
Daniel Baldoni)
|
||||
Prevent query expressions from leaking memory (Tom)
|
||||
Allow UPDATE of arrays elements (Tom)
|
||||
Wake up lock waiters during cancel (Hiroshi)
|
||||
Fix rare cursor crash when using hash join (Tom)
|
||||
Fix for DROP TABLE/INDEX in rolled-back transaction (Hiroshi)
|
||||
Fix psql crash from \l+ if MULTIBYTE enabled (Peter E)
|
||||
Fix truncation of rule names during CREATE VIEW (Ross Reedstrom)
|
||||
Fix PL/perl (Alex Kapranoff)
|
||||
Disallow LOCK on views (Mark Holloman)
|
||||
Disallow INSERT/UPDATE/DELETE on views (Mark Holloman)
|
||||
Disallow DROP RULE, CREATE INDEX, TRUNCATE on views (Mark Holloman)
|
||||
Allow PL/pgSQL accept non-ASCII identifiers (Tatsuo)
|
||||
Allow views to proper handle GROUP BY, aggregates, DISTINCT (Tom)
|
||||
Fix rare failure with TRUNCATE command (Tom)
|
||||
Allow UNION/INTERSECT/EXCEPT to be used with ALL, subqueries, views,
|
||||
DISTINCT, ORDER BY, SELECT...INTO (Tom)
|
||||
Fix parser failures during aborted transactions (Tom)
|
||||
Allow temporary relations to properly clean up indexes (Bruce)
|
||||
Fix VACUUM problem with moving rows in same page (Tom)
|
||||
Modify pg_dump so it dumps only user-defined items, not system-defined (Philip)
|
||||
Allow LIMIT in VIEW (Tom)
|
||||
Require cursor FETCH to honor LIMIT (Tom)
|
||||
Allow PRIMARY/FOREIGN Key definitions on inherited columns (Stephan)
|
||||
Allow ORDER BY, LIMIT in sub-selects (Tom)
|
||||
Allow UNION in CREATE RULE (Tom)
|
||||
Make DROP TABLE rollback-able (Tom)
|
||||
Store initdb collation in pg_control so collation cannot be changed (Tom)
|
||||
Fix INSERT...SELECT with rules (Tom)
|
||||
Fix FOR UPDATE inside views and subselects (Tom)
|
||||
Fix OVERLAPS operators conform to SQL92 spec regarding NULLs (Tom)
|
||||
Fix lpad() and rpad() to handle length less than input string (Tom)
|
||||
|
||||
Enhancements
|
||||
------------
|
||||
Add OUTER JOINs (Tom)
|
||||
Function manager overhaul (Tom)
|
||||
Allow ALTER TABLE RENAME on indexes(Tom)
|
||||
Improve CLUSTER(Tom)
|
||||
Improve ps status display for more platforms(Marc)
|
||||
Improve CREATE FUNCTION failure message(Ross)
|
||||
JDBC improvements (Peter, Travis Bauer, Christopher Cain, William Webber,
|
||||
Gunnar)
|
||||
Grand Unified Configuration scheme/GUC. Many options can now be set in
|
||||
data/postgresql.conf, postmaster/postgres flags, or SET commands (Peter E)
|
||||
Improved handling of file descriptor cache (Tom)
|
||||
New warning code about auto-created table alias entries (Bruce)
|
||||
Overhaul initdb process (Tom, Peter E)
|
||||
Overhaul of inherited tables; inherited tables now accessed by default;
|
||||
new ONLY keyword prevents it (Chris Bitmead, Tom)
|
||||
ODBC cleanups/improvements (Nick Gorham, Stephan Szabo, Zoltan Kovacs,
|
||||
Michael Fork)
|
||||
Allow renaming of temp tables (Tom)
|
||||
Overhaul memory manager contexts (Tom)
|
||||
pg_dump uses CREATE USER or CREATE GROUP rather using COPY (Peter E)
|
||||
Overhaul pg_dump (Philip Warner)
|
||||
Allow pg_hba.conf secondary password file to specify username (Peter E)
|
||||
Allow TEMPORARY or TEMP keyword when creating temporary tables (Bruce)
|
||||
New memory leak checker (Karel)
|
||||
New SET SESSION CHARACTERISTICS and SET DefaultXactIsoLevel (Thomas, Peter E)
|
||||
Allow nested block comments (Thomas)
|
||||
Add WITHOUT TIME ZONE type qualifier (Thomas)
|
||||
New ALTER TABLE ADD CONSTRAINT (Stephan)
|
||||
Use NUMERIC accumulators for INTEGER aggregates (Tom)
|
||||
Overhaul aggregate code (Tom)
|
||||
New VARIANCE and STDDEV() aggregates
|
||||
Improve dependency ordering of pg_dump (Philip)
|
||||
New pg_restore command (Philip)
|
||||
New pg_dump tar output option (Philip)
|
||||
New pg_dump of large objects (Philip)
|
||||
New ESCAPE option to LIKE (Thomas)
|
||||
New case-insensitive LIKE - ILIKE (Thomas)
|
||||
Allow functional indexes to use binary-compatible type (Tom)
|
||||
Allow SQL functions to be used in more contexts (Tom)
|
||||
New pg_config utility (Peter E)
|
||||
New PL/pgSQL EXECUTE command which allows dynamic SQL and utility statements
|
||||
(Jan)
|
||||
New PL/pgSQL GET DIAGNOSTICS statement for SPI value access (Jan)
|
||||
New quote_identifiers() and quote_literal() functions (Jan)
|
||||
New ALTER TABLE table OWNER TO user command (Mark Holloman)
|
||||
Allow subselects in FROM, i.e. FROM (SELECT ...) [AS] alias (Tom)
|
||||
Update PyGreSQL to version 3.1 (D'Arcy)
|
||||
Store tables as files named by OID (Vadim)
|
||||
New SQL function setval(seq,val,bool) for use in pg_dump (Philip)
|
||||
New pg_service.conf file (Mario Weilguni)
|
||||
Require DROP VIEW to remove views, no DROP TABLE (Mark)
|
||||
Allow DROP VIEW view1, view2 (Mark)
|
||||
Allow multiple objects in DROP INDEX, DROP RULE, and DROP TYPE (Tom)
|
||||
Allow automatic conversion to Unicode (Tatsuo)
|
||||
New /contrib/pgcrypto hashing functions (Marko Kreen)
|
||||
New pg_dumpall --accounts-only option (Peter E)
|
||||
New CHECKPOINT command for WAL which creates new WAL log file (Vadim)
|
||||
New AT TIME ZONE syntax (Thomas)
|
||||
Allow location of Unix domain socket to be configurable (David J. MacKenzie)
|
||||
Allow postmaster to listen on a specific IP address (David J. MacKenzie)
|
||||
Allow socket path name to be specified in hostname by using leading slash
|
||||
(David J. MacKenzie)
|
||||
Allow CREATE DATABASE to specify template database (Tom)
|
||||
New template0 database that contains no user additions(Tom)
|
||||
|
||||
Types
|
||||
-----
|
||||
Fix INET/CIDR type ordering and add new functions (Tom)
|
||||
Make OID behave as an unsigned type (Tom)
|
||||
Allow BIGINT as synonym for INT8 (Peter E)
|
||||
New int2 and int8 comparison operators (Tom)
|
||||
New BIT and BIT VARYING types (Adriaan Joubert, Tom)
|
||||
CHAR() no longer faster than VARCHAR() because of TOAST (Tom)
|
||||
|
||||
Performance
|
||||
-----------
|
||||
Write-Ahead Log (WAL) to provide crash recovery with less performance
|
||||
overhead (Vadim)
|
||||
ANALYZE stage of VACUUM no longer exclusively locks table (Bruce)
|
||||
Reduced file seeks (Denis Perchine)
|
||||
Improve BTREE code for duplicate keys (Tom)
|
||||
Store all large objects in a single operating system file (Denis Perchine, Tom)
|
||||
Improve memory allocation performance (Karel, Tom)
|
||||
|
||||
Source Code
|
||||
-----------
|
||||
New function manager call conventions (Tom)
|
||||
SGI portability fixes (David Kaelbling)
|
||||
New configure --enable-syslog option (Marc)
|
||||
New BSDI README (Bruce)
|
||||
configure script moved to top level, not /src (Peter E)
|
||||
Makefile/configuration/compilation cleanups (Peter E)
|
||||
New configure --with-python option (Peter E)
|
||||
Solaris cleanups (Peter E)
|
||||
Overhaul /contrib Makefiles (Karel)
|
||||
New OpenSSL configuration option (Magnus, Peter E)
|
||||
AIX fixes (Andreas)
|
||||
New heap_open(), heap_openr() API (Tom)
|
||||
Remove colon and semi-colon operators (Thomas)
|
||||
New pg_class.relkind value for views (Mark Holloman)
|
||||
Rename ichar() to chr() (Karel)
|
||||
New documentation for btrim(), ascii(), chr(), repeat() (Karel)
|
||||
Fixes for NT/Cygwin (Pete Forman)
|
||||
AIX port fixes (Andreas)
|
||||
New BeOS port (David Reid, Cyril Velter)
|
||||
Add proofreader's changes to docs (Addison-Wesley, Bruce)
|
||||
New Alpha spinlock code (Adriaan Joubert, Compaq)
|
||||
Unixware port overhaul (Peter E)
|
||||
New Darwin/Mac OSX port (Bruce Hartzler)
|
||||
New FreeBSD Alpha port (Alfred)
|
||||
Overhaul shared memory segments (Tom)
|
||||
Add IBM S/390 support (Neale Ferguson)
|
||||
</programlisting>
|
||||
</para>
|
||||
</sect2>
|
||||
</sect1>
|
||||
|
||||
|
||||
<sect1>
|
||||
<title>Release 7.0.3</title>
|
||||
<!--
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user