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@ -1,5 +1,440 @@ |
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Release Notes |
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Release 7.3 |
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Release date: 2002-??-?? |
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Overview |
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Major changes in this release: |
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SCHEMA SUPPORT |
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Schemas allow users to create objects in their own namespace |
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so two people can have the same table with the same name. |
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There is also a public schema for shared tables. |
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DROP COLUMN |
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PostgreSQL now support ALTER TABLE ... DROP COLUMN functionality. |
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Table Functions |
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Functions can now return entire tables, with multiple rows |
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and multiple columns. You can specify these functions in |
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the SELECT FROM clause. |
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Privileges |
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Functions and procedural languages now have privileges, and |
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people running them can take on the privileges of their creators. |
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Logging |
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A variety of logging options have been enhanced. |
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Prepared Queries |
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For performance, PostgreSQL now supports prepared queries. |
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Dependency Tracking |
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PostgreSQL now records object dependencies, which allows |
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improvements in many areas. |
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Multibyte/Locale |
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Both multibyte and locale are now enabled by default. |
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Interfaces |
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A large number of interfaces have been moved to |
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http://gborg.postgresql.org where they can be developed |
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and released independently. |
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Functions/Identifiers |
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By default, functions can now take up to 32 parameters, and |
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identifiers can be up to 64 bytes long. |
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---------------------------------------------------------------------- |
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Migration to version 7.3 |
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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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Observe the following incompatibilities: |
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* Pre-6.3 clients are no longer supported. |
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* pg_hba.conf now has a USER column and additional features. |
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* Several GUC logging parameters have been renamed and improved. |
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* LIMIT #,# is disabled, use LIMIT # OFFSET #. |
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* LIMIT can now appear before FOR UPDATE, for portability. |
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* INSERTs with column lists must specify all values, e.g. |
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INSERT INTO tab (col1, col2) VALUES ('val1') is now invalid |
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* DROP object now takes either CASCADE or RESTRICT to control |
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whether dependent objects are also dropped |
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* An index is now not automatically created for SERIAL columns |
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* A SET inside an aborted transaction is now rolled back |
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* COPY no longer considers missing trailing columns to be NULL |
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* TIMESTAMP and TIME data types now default to WITHOUT TIMEZONE |
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---------------------------------------------------------------------- |
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Changes |
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2002-09-02 |
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Server Operation |
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================ |
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Kerberos V Heimdal support (KTH) |
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Add pg_locks table to show locks (Neil) |
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Security fixes for password negotiation memory allocation (Neil) |
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Remove support for version 0, <=6.2 FE/BE protocol (Tom) |
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Reserve the last few backend slots for superusers, add GUC variable |
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superuser_reserved_connections to control this (Nigel J. Andrews) |
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Performance |
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=========== |
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Improve startup by calling localtime() only once (Tom) |
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Cache system catalog information in flat files for faster startup (Tom) |
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Improve caching of index information (Tom) |
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Optimizer improvements (Tom, Fernando Nasser) |
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Catalog caches now store failed lookups (Tom) |
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Hash function improvements (Neil) |
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EXPLAIN now outputs as a query (Tom) |
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Improve performance of query tokenization and network handling (Peter) |
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Speed improvement for large object restore (Mario Weilguni) |
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Mark expired index entries on first lookup, saving later heap fetches (Tom) |
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Eliminate NULL bitmap padding when not required (Manfred) |
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Display sort keys in EXPLAIN (Tom) |
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Add BSD-licensed qsort() for Solaris, for performance (Bruce) |
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Reduce per-row overhead by four bytes (Manfred Koizar) |
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Fix GEQO optimizer bug (Neil Conway) |
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Make WITHOUT OID actually save four bytes per row (Manfred Koizar) |
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Add GUC default_statistics_target variable to specify ANALYZE buckets (Neil) |
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Use local buffer cache for temporary tables so no WAL overhead (Tom) |
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Privileges |
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========== |
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Add privileges on functions and procedural languages |
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Add OWNER to CREATE DATABASE so superusers can create databases |
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on behalf of unprivileged users. (Gavin Sherry, Tom) |
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Add new object permission bits EXECUTE and USAGE (Tom) |
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Add SET SESSION AUTHORIZATION DEFAULT and RESET SESSION AUTHORIZATION (Peter) |
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Allow functions to be executed with the privilege of the function owner (Peter) |
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Client Authentication |
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===================== |
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Add file to hold passwords using PGPASSWORDFILE environment variable |
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(Alvaro Herrera) |
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Server Configuration |
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==================== |
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Server log messages now tagged with LOG, not DEBUG (Bruce) |
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Add USER column to pg_hba.conf (Bruce) |
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Have log_connections output two lines in log file (Tom) |
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Remove debug_level from postgresql.conf, now SERVER_MIN_MESSAGES (Bruce) |
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New ALTER DATABASE/USER ... SET command for per-user/db initialization (Peter) |
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New GUC variables server_min_messages and client_min_messages which control |
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which messages are sent to the server logs or client applications (Bruce) |
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Allow pg_hba.conf to specify lists of users/dbs separated by commas, |
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group names prepended with +, and file names prepended with @ (Bruce) |
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Allow group names specified by + |
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Add samegroup in pg_hba.conf for group name/dbname restriction (Bruce) |
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Remove secondary password file capability (Bruce) |
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Remove pg_passwd utility (Bruce) |
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Add GUC variable db_user_namespace for db-local user names (Bruce) |
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SSL improvements (Bear Giles) |
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Make encryption of stored passwords the default (Bruce) |
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Allow pg_statistics to be reset by calling pg_stat_reset() (Christopher) |
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Add log_duration GUC parameter (Bruce) |
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Rename GUC debug_print_query to log_statement (Bruce) |
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Rename GUC show_query_stats to show_statement_stats (Bruce) |
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Add GUC param log_min_error_statement to print query to logs on error (Gavin) |
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Queries |
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Make cursors insensitive, meaning their contents do not change (Tom) |
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Disable LIMIT #,# syntax; now only LIMIT # OFFSET # supported (Bruce) |
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Increase identifier length to 64 (Neil, Bruce) |
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UNION fixes for merging >= 3 columns of different lengths (Tom) |
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Add DEFAULT keyword to INSERT, i.e INSERT ... (..., DEFAULT, ) (Rod) |
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Allow views to have default values using ALTER COLUMN ... SET DEFAULT (Neil) |
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Fail on INSERTs with column lists that don't supply all column values, |
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e.g. INSERT INTO tab (col1, col2) VALUES ('val1'); (Rod) |
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Fix for join aliases (Tom) |
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Improve reporting of invalid identifier and location (Tom, Gavin) |
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Fix OPEN cursor(args) (Tom) |
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Allow 'ctid' to be used in a view and currtid(viewname) (Hiroshi) |
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Fix for CREATE TABLE AS with UNION (Tom) |
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SQL99 syntax improvements (Thomas) |
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Add GUC statement_timeout variable to cancel queries (Bruce) |
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Allow prepared queries with PREPARE/EXECUTE (Neil) |
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Allow FOR UPDATE to appear after LIMIT/OFFSET (Bruce) |
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Add auto-transactions with GUC variable autocommit (Tom, David Van Wie) |
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Object Manipulation |
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=================== |
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Make equals signs optional in CREATE DATABASE (Gavin Sherry) |
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Make ALTER TABLE OWNER to change index ownership (Neil) |
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Add per-database and per-user startup commands, ALTER DATABASE ... SET and |
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ALTER USER ... SET (Peter) |
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New ALTER TABLE tabname ALTER COLUMN colname SET STORAGE controls TOAST |
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storage, compression (John Gray) |
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Add SCHEMA support with CREATE/DROP SCHEMA (Tom) |
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Create schema for temporary tables (Tom) |
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Add GUC variable search_path for namespace schema search (Tom) |
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Add ALTER TABLE SET/DROP NOT NULL (Christopher) |
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New CREATE FUNCTION volatility levels (Tom) |
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Make rule names unique only per table (Tom) |
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Add 'ON tablename' clause to DROP RULE and COMMENT ON RULE (Tom) |
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Add ALTER TRIGGER RENAME (Joe) |
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New current_schema() and current_schemas() inquiry functions (Tom) |
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Allow functions to return multiple rows, also called table functions (Joe) |
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Make WITH optional in CREATE DATABASE, for consistency (Bruce) |
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Add object dependency tracking (Rod, Tom) |
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Add RESTRICT/CASCADE to DROP commands (Rod) |
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Add ALTER TABLE DROP non-CHECK CONSTRAINT (Rod) |
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Auto-destroy sequence on DROP of table with SERIAL (Rod) |
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Prevent column dropping if column is used by foreign key (Rod) |
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Automatically drop constraints/functions when object is dropped (Rod) |
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Add CREATE/DROP OPERATOR CLASS (Bill Studenmund, Tom) |
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Add ALTER TABLE DROP COLUMN (Christopher) |
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Prevent inherited columns from being removed or renamed (Alvaro Herrera) |
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Add CREATE OR REPLACE VIEW, CREATE OR REPLACE RULE (Gavin, Neil, Tom) |
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Utility Commands |
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================ |
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Have COPY TO output embedded carriage returns and newlines as \r and \n (Tom) |
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Allow DELIMITER in COPY FROM to be 8-bit clean (Tatsuo) |
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Make pg_dump use ALTER TABLE ADD PRIMARY KEY, for performance (Neil) |
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Disable brackets in multi-statement rules (Bruce) |
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Disable VACUUM from being called inside a function (Bruce) |
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Allow dropdb and other scripts to use identifiers with spaces (Bruce) |
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Restrict comments to the current database |
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Allow comments on operators, independent of the underlying function (Rod) |
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Rollback SET commands in aborted transactions (Tom) |
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Add 'SET LOCAL var = value' to set GUC variables for a single transaction (Tom) |
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Allow ANALYZE to run in a transaction (Bruce) |
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Improve COPY syntax using new WITH clauses, keep backward compatibility (Bruce) |
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Fix pg_dump to consistently output tags in non-ASCII dumps (Bruce) |
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Make foreign key constraints clearer in dump file (Rod) |
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Add COMMENT ON CONSTRAINT (Rod) |
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Allow COPY TO/FROM to specify column names (Brent Verner) |
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Dump UNIQUE and PRIMARY KEY contraints as ALTER TABLE (Rod) |
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Have SHOW output a query result (Joe) |
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Generate failure on short COPY lines rather than pad NULLs (Neil) |
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Fix CLUSTER to preserve all table attributes (Alvaro Herrera) |
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New pg_settings table to view/modify GUC settings (Joe) |
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Add smart quoting, portability improvements to pg_dump output (Peter) |
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Dump serial columns out as SERIAL (Tom) |
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Enable large file support, >2G for pg_dump (Peter) |
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Disallow TRUNCATE on tables that are involved in referential constraints (Rod) |
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Have TRUNCATE also auto-truncate the toast table of the relation (Tom) |
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Add clusterdb utility that will auto-cluster an entire database based on |
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previous CLUSTER operations (Alvaro Herrera) |
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Overhaul pg_dumpall (Peter) |
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Allow REINDEX of TOAST tables (Tom) |
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Data Types and Functions |
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======================== |
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Fix factorial(0) to return 1 (Bruce) |
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Date/time/timezone improvements (Thomas) |
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Fix for array slice extraction (Tom) |
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Fix extract/date_part to report proper microseconds for timestamp (Tatsuo) |
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Allow text_substr() and bytea_substr() to read TOAST values more |
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efficiently (John Gray) |
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Add DOMAIN type support (Rod) |
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Make WITHOUT TIME ZONE the default for TIMESTAMP and TIME data types (Thomas) |
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Allow alternate storage scheme of 64-bit integers for date/time types |
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using --enable-integer-datetimes in configure (Thomas) |
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Make timezone(timestamptz) return timestamp rather than a string (Thomas) |
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Allow fractional seconds in date/time types for dates prior to 1BC (Thomas) |
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Limit timestamp data types to 6 decimal places of precision (Thomas) |
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Change timezone conversion functions from timetz() to timezone() (Thomas) |
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Add GUC variables datestyle and timezone (Tom) |
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Add OVERLAY(), which allows substitution of a substring in a string (Thomas) |
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Add SIMILAR TO as a synonym for our existing operator "~" (Thomas) |
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Add regular expression SUBSTRING(string FROM pat FOR escape) (Thomas) |
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Add LOCALTIME and LOCALTIMESTAMP functions (Thomas) |
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Remove ODBC-compatible empty parentheses from calls to SQL99 functions |
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for which these parentheses do not match the standar (Thomas) |
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Add appendix in the User's Guide which lists SQL92 features (Thomas) |
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Allow macaddr data type to accept 12 hex digits with no separators (Mike Wyer) |
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Add CREATE/DROP CAST (Thomas) |
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Add IS DISTINCT FROM operator (Thomas) |
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Add SQL99 TREAT() functionas synonym for CAST() (Thomas) |
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Add pg_backend_pid() to output backend pid (Bruce) |
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Allow inet arrays in /contrib/array (Neil) |
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Add IS OF / IS NOT OF type predicate (Thomas) |
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Allow bit string constants without fully-specified length (Thomas) |
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Allow conversion between 8-byte integers and bit strings (Thomas) |
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Implement hex literal conversion to bit string literal (Thomas) |
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Allow table functions to appear in the FROM clause (Joe) |
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Increase maximum number of function parameters to 32 (Bruce) momjian |
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No longer automatically create index for SERIAL column (Tom) |
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Add current_database() (Rod) |
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Fix cash_words() to not overflow buffer (Tom) |
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Add functions replace(), split(), to_hex() (Joe) |
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Fix LIKE for bytea as a right-hand argument (Joe) |
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Internationalization |
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==================== |
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Add additional encodings (Korean (JOHAB), Thai (WIN874), Vietnamese (TCVN), |
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Arabic (WIN1256), Simplified Chinese (GBK), Korean (UHC) (Eiji Tokuya) |
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Enable locale support by default (Peter) |
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Add GUC locale variables (Peter) |
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Escape byes >= 0x7f for multibyte in PQescapeBytea/PQunescapeBytea (Tatsuo) |
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Add locale awareness to regular expression character classes |
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Enable multibyte support by default (Tatso) |
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Add GUC variables client_encoding (Tom) |
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Add GB18030 multibyte support (Bill Huang) |
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Add CREATE/DROP CONVERSION, allowing loadable encodings (Tatsuo) |
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Add pg_conversion table (Tatsuo) |
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Add SQL99 CONVERT() function (Tatsuo) |
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Server-side Languages |
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===================== |
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Allow recursive SQL function (Peter) |
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Change PL/Tcl build to use configured compiler and Makefile.shlib (Peter) |
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Have PL/PgSQL FOUND return proper value for PERFORM and SELECT INTO (Tom, Neil) |
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Allow PL/PgSQL to handle quoted identifiers (Tom) |
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Allow PL/pgSQL functions can return sets (Neil) |
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Psql |
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==== |
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Don't lowercase psql \connect database name for 7.2.0 compatibility (Tom) |
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Add psql \timing to time user queries (Greg Sabino Mullane) |
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Have psql \d show index information (Greg Sabino Mullane) |
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New psql \dD shows domains (Jonathan Eisler) |
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Allow psql to show rules on views (Paul ?) |
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Fix for psql variable substitution (Tom) |
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Allow psql \d to show temporary table structure (Tom) |
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Allow psql \d to show foreign keys (Rod) |
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Fix \? to honor \pset pager (Bruce) |
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Have psql reports its version number on startup (Tom) |
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Libpq |
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===== |
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Add PQunescapeBytea() function to libpq (Patrick Welche) |
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Fix for sending large queries over non-blocking connections (Bernhard Herzog) |
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Fix for libpq using timers on Win9X (David Ford) |
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Allow libpq notify to handle servers with different-length indentifiers (Tom) |
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Add libpq PQescapeString() and PQescapeBytea() to Win32 (Bruce) |
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Fix for SSL with non-blocking connections (Jack Bates) |
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Add libpq connection timeout parameter (Denis A Ustimenko) |
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JDBC |
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==== |
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jdbc compiles with jdk 1.4 (Dave) |
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Allows jdbc to set loglevel by adding ?loglevel=X to the connection URL (Barry) |
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Add jdbc Driver.info() message that prints out the version number (Barry) |
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Added jdbc updateable result sets |
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Add refresh row to jdbc (Dave) |
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Add jdbc3 support (Barry) |
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Fix jdbc MD5 encryption handling for multibyte servers (Jun Kawai) |
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Add JDBC support for prepared statements (Barry) |
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ECPG |
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==== |
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Fixed ecpg bug concerning octal numbers in single quotes (Michael) |
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Misc. Interfaces |
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================ |
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Move /interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce) |
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Improve python (Elliot Lee, Andrew Johnson, Greg Copeland) |
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Add libpgtcl connection close event (Gerhard Hintermayer) |
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Move /interfaces/libpq++ to http://gborg.postgresql.org (Marc, Bruce) |
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Move /interfaces/odbc to http://gborg.postgresql.org (Marc) |
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Move /interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce) |
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Move /interfaces/perl5 to http://gborg.postgresql.org (Marc, Bruce) |
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Remove /bin/pgaccess from main tree, now at http::/www.pgaccess.org (Bruce) |
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Build and Install |
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================= |
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Fix for parallel make (Peter) |
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AIX fixes for linking TCL (Andreas Zeugswetter) |
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Allow plperl to build under Cygwin (Jason Tishler) |
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Improve MIPS compiles (Peter, Oliver Elphick) |
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Require autoconf version 2.53 (Peter) |
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Require readline and zlib by default in configure (Peter) |
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Allow Solaris to use Intimate Shared Memory (ISM), for performance |
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(Scott Brunza, P.J. Josh Rovero) |
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Always enable syslog in compile, remove --enable-syslog option (Tatsuo) |
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Fix for Win9x DLL creation (Magnus Naeslund) |
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Fix for link() usage by WAL code on Win32, Netware, BeOS (Jason Tishler) |
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Add sys/types.h to c.h, remove from main files (Peter, Bruce) |
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Fix AIX hang on SMP machines (Tomoyuki Niijima) |
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Source Code |
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=========== |
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Improve loadable module linking to use RTLD_NOW (Tom) |
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New error levels WARNING, INFO, LOG, DEBUG[1-5] (Bruce) |
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New src/port directory holds replace libc functions (Peter, Bruce) |
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New pg_namespace system catalog for schemas (Tom) |
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Add pg_class.relnamespace for schemas (Tom) |
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Add pg_type.typnamespace for schemas (Tom) |
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Add pg_proc.pronamespace for schemas (Tom) |
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Restructure aggregates to have pg_proc entries (Tom) |
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System relations now have their own namespace, pg_* test not required |
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(Fernando Nasser) |
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Rename TOAST index names to be *_index rather than *_idx (Neil) |
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Add namespaces for operators, opclasses (Tom) |
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Add additional checks to server control file (Thomas) |
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New Polish FAQ (Marcin Mazurek) |
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Add Posix semaphore support (Tom) |
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Document need for reindex (Bruce) |
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Rename some internal identifers to simplify Win32 compile (Jan, Katherine Ward) |
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Add documentation on computing disk space (Bruce) |
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Remove KSQO from GUC (Bruce) |
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Fix memory leak in rtree (Kenneth Been) |
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Modify a few error messages for consistency (Bruce) momjian |
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Remove unused system table columns (Peter) |
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Make system columns NOT NULL where appropriate (Tom) |
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Clean up use of sprintf in favor of snprintf() |
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Remove OPAQUE and create specific subtypes (Tom) |
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Cleanups in array internal handling (Tom) |
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Disallow pg_atoi('') (Bruce) |
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Remove GUC parameter wal_files because WAL files are now recycled (Bruce) |
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Contrib |
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======= |
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Gist fixes (Teodor Sigaev, Neil) |
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Upgrade /contrib/mysql |
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Add /contrib/dbsize which shows table sizes without vacuum (Peter) |
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Add /contrib/intagg, integer aggregator routines (mlw) |
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Improve /contrib/Oid2name (Neil, Bruce) |
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Improve /contrib/tsearch (Teodor Sigaev) |
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Improve /contrib/tsearch (Oleg) |
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Cleanups of /contrib/rserver (Alexey V. Borzov) |
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Update /contrib/oracle conversion utility (Gilles Darold) |
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Update /contrib/dblink (Joe) |
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Improve options supported by /contrib/vacuumlo (Mario Weilguni) |
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Fixes, improvements to /contrib/intarray (Oleg, Andrey Oktyabrski) |
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Add /contrib/reindexdb utility (Shaun Thomas) |
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Add indexing to /contrib/isbn_issn (Dan Weston) |
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Add /contrib/dbmirror (Steven Singer) |
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Improve /contrib/pgbench (Neil) |
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Add /contrib/tablefunc table function examples (Joe) |
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Add /contrib/ltree data type for tree structures (Teodor Sigaev, Oleg Bartunov) |
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Move /contrib/pg_controldata into main tree (Bruce) |
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Fixes to /contrib/cube (Bruno Wolff) |
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Improve /contrib/fulltextindex (Christopher) |
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---------------------------------------------------------------------- |
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Release 7.2.2 |
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Release date: 2002-08-23 |
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Bruce Momjian
23 years ago