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< A dash (-) marks changes that will appear in the upcoming 7.3 release. > A dash (-) marks changes that will appear in the upcoming 7.4 release. 38d37 < * -Change DEBUG startup tag to LOG (Bruce) 40,51d38 < * -Add pg_backend_pid() function to backend < * -Allow logging of query durations < < < Permissions < =========== < < * -Improve control over user privileges, including table creation < * -Allow user/group names to be specified directly in pg_hba.conf (Bruce) < * -Add ~/.pgpass to store passwords with user/host/password combinations < * -Allow permissions for functions (Peter E) < * -Allow object creation to be disabled for specific users 58,60d44 < * -Make it easier to create a database owned by someone who can't createdb, < perhaps CREATE DATABASE dbname WITH OWNER = "user" (Gavin) < * -Make equals sign optional in CREATE DATABASE WITH param = 'val' 65,66d48 < * -Prevent SIGHUP and 'pg_ctl reload' from changing command line < specified parameters to postgresql.conf defaults (Peter E) 69,70d50 < * -Reserve last few process slots for super-user if max_connections reached < * -Add GUC parameter to print queries that generate errors 79d58 < * -Add domain capability (Rod Taylor) 82,84d60 < * -SELECT cash_out(2) crashes because of opaque < * -Declare typein/out functions in pg_proc with a special "C string" data type < * -Functions returning sets do not totally work 89d64 < * -Add GUC parameter for DATESTYLE 91,93d65 < * -Allow bytea to handle LIKE with non-TEXT patterns < * -to_char(0,'FM999.99') returns a period, to_char(1,'FM999.99') doesn't (Karel) < * -Add floor(float8) and other missing functions 97d68 < o -Store binary-compatible type information in the system 104d74 < o -Ensure we have array-eq operators for every built-in array type 139,140d108 < * -Remove brackets as multi-statement rule grouping, must use parens (Bruce) < * -Prevent aggregates from being used in rule WHERE clauses 154d121 < * -Allow UPDATE/DELETE on inherited table 166d132 < * -Add deleted bit to index tuples to reduce heap access 176d141 < * -Test hash index performance and discourage usage 182d146 < * -Add SIMILAR TO to allow character classes, 'pg_[a-c]%' 184d147 < * -Remove LIMIT #,# and force use LIMIT and OFFSET clauses in 7.3 (Bruce) 186,187d148 < * -Disallow TRUNCATE on tables that are involved in referential constraints < * -Add OR REPLACE clauses to non-FUNCTION object creation 190d150 < * -Prevent create/drop scripts from allowing extra args (Bruce) 201,205d160 < o -Add ALTER TABLE DROP COLUMN feature < o -Add ALTER TABLE DROP non-CHECK CONSTRAINT < o -ALTER TABLE ADD PRIMARY KEY (Tom) < o -ALTER TABLE ADD UNIQUE (Tom) < o -ALTER TABLE ALTER COLUMN SET/DROP NOT NULL (Christopher) 210d164 < o -Have ALTER TABLE OWNER change all dependant objects like indexes 214,216d167 < o -Cluster all tables at once using pg_index.indisclustered set during < previous CLUSTER < o -Prevent loss of indexes, permissions, inheritance 221d171 < o -Allow specification of column names 224d173 < o -Change syntax to WITH DELIMITER, (keep old syntax around?) 228d176 < o -Generate failure on short COPY lines rather than pad NULLs 242,243d189 < o -Allow INSERT INTO my_table VALUES (a, b, c, DEFAULT, x, y, z, ...) < o -Disallow missing columns in INSERT ... (col) VALUES, per ANSI 248,249d193 < o -Add command to display locks < o -Add SET or BEGIN timeout parameter to cancel query 251d194 < o -Remove SET KSQO option now that OR processing is improved (Bruce) 254,256d196 < o -Add SHOW command to see locale < o -Allow SHOW to output as a query result, like EXPLAIN < o -Abort all SET changes made in an aborted transaction 264d203 < o -Fix PL/PgSQL to handle quoted mixed-case identifiers 287,291d225 < * -Have pg_dump use LEFT OUTER JOIN in multi-table SELECTs < or multiple SELECTS to avoid bad system catalog entries < * -Have pg_dump -C dump database location and encoding information < * -Allow psql \d to show foreign keys < * -Allow psql \d to show temporary table structure (Tom) 294d227 < * -Have pg_dump use ADD PRIMARY KEY after COPY, for performance (Neil) 302d234 < o -Updateable resultSet 307d238 < o -Implement cancel() method on Statement 309d239 < o -Add support for CallableStatements 311d240 < o -Compile under jdk 1.4 334d262 < * -Allow oid to act as a foreign key 337,338d264 < * -Allow user to control trigger firing order (Tom) < * -Add ALTER TRIGGER ... RENAME 341d266 < * -Fix foreign key constraints to not error on intermediate db states (Stephan) 350,359d274 < * -Add pg_depend table for dependency recording; use sysrelid, oid, < depend_sysrelid, depend_oid, name < * -Auto-destroy sequence on DROP of table with SERIAL; perhaps a separate < SERIAL type < * -Prevent column dropping if column is used by foreign key < * -Propagate column or table renaming to foreign key constraints < * -Automatically drop constraints/functions when object is dropped < * -Make foreign key constraints clearer in dump file < * -Make other constraints clearer in dump file < * -Make foreign keys easier to identify 367d281 < * -Allow autocommit so always in a transaction block 377d290 < * -Add SQL92 schemas (Tom) 400d312 < * -Cache most recent query plan(s) (Neil) [prepare] 439d350 < * -Cache system catalog information in per-database files (Tom) 450,451d360 < * -Reorder postgresql.conf WAL items in order of importance (Bruce) < * -Remove wal_files postgresql.conf option because WAL files are now recycled 465,466d373 < * -Improve dynamic memory allocation by introducing tuple-context memory < allocation (Tom) 468d374 < * -Nested FULL OUTER JOINs don't work (Tom) 470,472d375 < * -Add new pg_proc cachable settings to specify whether function can be < evaluated only once or once per query < * -Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce) 494,496d396 < * -Add Intimate Shared Memory(ISM) for Solaris < * -Use faster flex flags for performance improvement (Peter E) < * -Add BSD-licensed qsort() for Solaris 503,507d402 < * -Fix problems with libpq non-blocking/async code < * -Make sure all block numbers are unsigned to increase maximum table size < * -Merge LockMethodCtl and LockMethodTable into one shared structure (Bruce) < * -HOLDER/HOLDERTAB rename to PROCLOCK/PROCLOCKTAG (Bruce) < * -Remove LockMethodTable.prio field, not used (Bruce) 512,513d406 < * -Make one version of simple_prompt() in code (Bruce, Tom) < * -Compile in syslog functionaility by default (Tatsuo) 517d409 < * -Report failure to find readline or zlib at end of configure run 519,520d410 < * -Increase identifier length (NAMEDATALEN) if small performance hit, < * -Increase maximum number of function parameters if little wasted space 529,530d418 < * -Fix glibc's mktime() to handle pre-1970's dates < * -Move /contrib/retep to gborg.postgresql.org
This commit is contained in:
Bruce Momjian
parent
308910d00f
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doc/TODO
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doc/TODO
@ -1,13 +1,13 @@
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TODO list for PostgreSQL
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========================
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Last updated: Wed Nov 6 00:12:55 EST 2002
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Last updated: Wed Nov 6 00:55:00 EST 2002
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Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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The most recent version of this document can be viewed at
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the PostgreSQL web site, http://www.PostgreSQL.org.
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A dash (-) marks changes that will appear in the upcoming 7.3 release.
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A dash (-) marks changes that will appear in the upcoming 7.4 release.
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Bracketed items "[]" have more detailed.
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@ -35,39 +35,19 @@ Reporting
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number, not just messages (Peter E)
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* Add error codes (Peter E)
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* Make error messages more consistent [error]
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* -Change DEBUG startup tag to LOG (Bruce)
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* Show location of syntax error in query [yacc]
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* -Add pg_backend_pid() function to backend
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* -Allow logging of query durations
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Permissions
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===========
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* -Improve control over user privileges, including table creation
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* -Allow user/group names to be specified directly in pg_hba.conf (Bruce)
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* -Add ~/.pgpass to store passwords with user/host/password combinations
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* -Allow permissions for functions (Peter E)
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* -Allow object creation to be disabled for specific users
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Administration
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==============
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* Incremental backups
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* -Make it easier to create a database owned by someone who can't createdb,
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perhaps CREATE DATABASE dbname WITH OWNER = "user" (Gavin)
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* -Make equals sign optional in CREATE DATABASE WITH param = 'val'
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* Remove unreferenced table files and temp tables during database vacuum
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or postmaster startup (Bruce)
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* Remove behavior of postmaster -o after making postmaster/postgres
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flags unique
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* -Prevent SIGHUP and 'pg_ctl reload' from changing command line
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specified parameters to postgresql.conf defaults (Peter E)
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* Allow easy display of usernames in a group
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* Allow configuration files to be specified in a different directory
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* -Reserve last few process slots for super-user if max_connections reached
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* -Add GUC parameter to print queries that generate errors
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* Add start time to pg_stat_activity
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* Allow limits on per-db/user connections
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* Have standalone backend read postgresql.conf
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@ -76,32 +56,22 @@ Administration
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Data Types
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==========
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* -Add domain capability (Rod Taylor)
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* Add IPv6 capability to INET/CIDR types
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* Remove Money type, add money formatting for decimal type
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* -SELECT cash_out(2) crashes because of opaque
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* -Declare typein/out functions in pg_proc with a special "C string" data type
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* -Functions returning sets do not totally work
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* Change factorial to return a numeric
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* Change NUMERIC data type to use base 10,000 internally
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* Change NUMERIC to enforce the maximum precision, and increase it
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* Add function to return compressed length of TOAST data values (Tom)
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* -Add GUC parameter for DATESTYLE
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* Allow INET subnet tests using non-constants
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* -Allow bytea to handle LIKE with non-TEXT patterns
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* -to_char(0,'FM999.99') returns a period, to_char(1,'FM999.99') doesn't (Karel)
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* -Add floor(float8) and other missing functions
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* Add now("transaction|statement|clock") functionality
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* CONVERSION
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o -Store binary-compatible type information in the system
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o Allow better handling of numeric constants, type conversion
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[typeconv]
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* ARRAYS
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o Allow nulls in arrays
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o Allow arrays to be ORDER'ed
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o -Ensure we have array-eq operators for every built-in array type
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o Support construction of array result values in expressions
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* BINARY DATA
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@ -136,8 +106,6 @@ Views / Rules
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* Have views on temporary tables exist in the temporary namespace
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* Move psql backslash information into views
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* Allow RULE recompilation
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* -Remove brackets as multi-statement rule grouping, must use parens (Bruce)
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* -Prevent aggregates from being used in rule WHERE clauses
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Indexes
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@ -151,7 +119,6 @@ Indexes
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* UNIQUE INDEX on base column not honored on inserts from inherited table
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INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
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[inheritance]
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* -Allow UPDATE/DELETE on inherited table
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* Add UNIQUE capability to non-btree indexes
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* Add btree index support for reltime, tinterval, regproc
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* Add rtree index support for line, lseg, path, point
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@ -163,7 +130,6 @@ Indexes
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* Use index to restrict rows returned by multi-key index when used with
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non-consecutive keys or OR clauses, so fewer heap accesses
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* Be smarter about insertion of already-ordered data into btree index
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* -Add deleted bit to index tuples to reduce heap access
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* Prevent index uniqueness checks when UPDATE does not modifying column
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* Use bitmaps to fetch heap pages in sequential order [performance]
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* Use bitmaps to combine existing indexes [performance]
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@ -173,21 +139,15 @@ Indexes
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* Add FILLFACTOR to btree index creation
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* Add concurrency to GIST
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* Improve concurrency of hash indexes (Neil)
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* -Test hash index performance and discourage usage
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Commands
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========
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* -Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
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* Add BETWEEN ASYMMETRIC/SYMMETRIC (Christopher)
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* -Remove LIMIT #,# and force use LIMIT and OFFSET clauses in 7.3 (Bruce)
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* Allow LIMIT/OFFSET to use expressions
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* -Disallow TRUNCATE on tables that are involved in referential constraints
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* -Add OR REPLACE clauses to non-FUNCTION object creation
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* CREATE TABLE AS can not determine column lengths from expressions [atttypmod]
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* Allow UPDATE to handle complex aggregates [update]
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* -Prevent create/drop scripts from allowing extra args (Bruce)
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* Allow command blocks to ignore certain types of errors
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* Allow backslash handling in quoted strings to be disabled for portability
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* Return proper effected tuple count from complex commands [return]
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@ -198,34 +158,22 @@ Commands
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* ALTER
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o ALTER TABLE ADD COLUMN does not honor DEFAULT and non-CHECK CONSTRAINT
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o -Add ALTER TABLE DROP COLUMN feature
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o -Add ALTER TABLE DROP non-CHECK CONSTRAINT
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o -ALTER TABLE ADD PRIMARY KEY (Tom)
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o -ALTER TABLE ADD UNIQUE (Tom)
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o -ALTER TABLE ALTER COLUMN SET/DROP NOT NULL (Christopher)
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o ALTER TABLE ADD COLUMN column DEFAULT should fill existing
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rows with DEFAULT value
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o ALTER TABLE ADD COLUMN column SERIAL doesn't create sequence because
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of the item above
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o -Have ALTER TABLE OWNER change all dependant objects like indexes
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o Add ALTER TABLE tab SET WITHOUT OIDS
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* CLUSTER
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o -Cluster all tables at once using pg_index.indisclustered set during
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previous CLUSTER
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o -Prevent loss of indexes, permissions, inheritance
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o Automatically maintain clustering on a table
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o Allow CLUSTER to cluster all tables, remove clusterdb
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* COPY
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o -Allow specification of column names
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o Allow psql \copy to specify column names
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o Allow dump/load of CSV format
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o -Change syntax to WITH DELIMITER, (keep old syntax around?)
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o Allow COPY to report error lines and continue; optionally
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allow error codes to be specified; requires savepoints or can
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not be run in a multi-statement transaction
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o -Generate failure on short COPY lines rather than pad NULLs
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o Allow copy to understand \x as hex
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* CURSOR
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@ -239,21 +187,13 @@ Commands
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* INSERT
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o Allow INSERT/UPDATE of system-generated oid value for a row
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o Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..)
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o -Allow INSERT INTO my_table VALUES (a, b, c, DEFAULT, x, y, z, ...)
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o -Disallow missing columns in INSERT ... (col) VALUES, per ANSI
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o Allow INSERT/UPDATE ... RETURNING new.col or old.col; handle
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RULE cases (Philip)
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* SHOW/SET
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o -Add command to display locks
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o -Add SET or BEGIN timeout parameter to cancel query
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o Add SET REAL_FORMAT and SET DOUBLE_PRECISION_FORMAT using printf args
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o -Remove SET KSQO option now that OR processing is improved (Bruce)
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o Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
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ANALYZE, and CLUSTER
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o -Add SHOW command to see locale
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o -Allow SHOW to output as a query result, like EXPLAIN
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o -Abort all SET changes made in an aborted transaction
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o Add SET SCHEMA
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o Allow EXPLAIN EXECUTE to see prepared plans
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o Allow SHOW of non-modifiable variables, like pg_controldata
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@ -261,7 +201,6 @@ Commands
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* SERVER-SIDE LANGUAGES
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o Allow PL/PgSQL's RAISE function to take expressions
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o -Fix PL/PgSQL to handle quoted mixed-case identifiers
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o Change PL/PgSQL to use palloc() instead of malloc()
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o Add untrusted version of plpython
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o Allow Java server-side programming, http://pljava.sourceforge.net
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@ -284,14 +223,8 @@ Commands
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Clients
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=======
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* -Have pg_dump use LEFT OUTER JOIN in multi-table SELECTs
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or multiple SELECTS to avoid bad system catalog entries
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* -Have pg_dump -C dump database location and encoding information
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* -Allow psql \d to show foreign keys
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* -Allow psql \d to show temporary table structure (Tom)
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* Allow psql to show transaction status if backend protocol changes made
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* Add XML interface: psql, pg_dump, COPY, separate server (?)
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* -Have pg_dump use ADD PRIMARY KEY after COPY, for performance (Neil)
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* Add schema, cast, and conversion backslash commands to psql
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* Allow pg_dump to dump a specific schema
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* Allow psql to do table completion for SELECT * FROM schema_part and
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@ -299,16 +232,12 @@ Clients
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* JDBC
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o Comprehensive test suite. This may be available already.
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o -Updateable resultSet
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o JDBC-standard BLOB support
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o Error Codes (pending backend implementation)
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o Support both 'make' and 'ant'
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o Fix LargeObject API to handle OIDs as unsigned ints
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o -Implement cancel() method on Statement
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o Use cursors implicitly to avoid large results (see setCursorName())
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o -Add support for CallableStatements
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o Add LISTEN/NOTIFY support to the JDBC driver (Barry)
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o -Compile under jdk 1.4
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* ECPG
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o Implement set descriptor, using descriptor
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@ -331,14 +260,10 @@ Referential Integrity
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* Add MATCH PARTIAL referential integrity [foreign]
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* Add deferred trigger queue file (Jan)
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* -Allow oid to act as a foreign key
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* Implement dirty reads and use them in RI triggers
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* Enforce referential integrity for system tables
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* -Allow user to control trigger firing order (Tom)
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* -Add ALTER TRIGGER ... RENAME
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* Change foreign key constraint for array -> element to mean element
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in array
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* -Fix foreign key constraints to not error on intermediate db states (Stephan)
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* Allow DEFERRABLE UNIQUE constraints
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* Allow triggers to be disabled [trigger]
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* Support statement-level triggers and triggers on columns (Neil)
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@ -347,16 +272,6 @@ Referential Integrity
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Dependency Checking
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===================
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* -Add pg_depend table for dependency recording; use sysrelid, oid,
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depend_sysrelid, depend_oid, name
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* -Auto-destroy sequence on DROP of table with SERIAL; perhaps a separate
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SERIAL type
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* -Prevent column dropping if column is used by foreign key
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* -Propagate column or table renaming to foreign key constraints
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* -Automatically drop constraints/functions when object is dropped
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* -Make foreign key constraints clearer in dump file
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* -Make other constraints clearer in dump file
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* -Make foreign keys easier to identify
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* Flush cached query plans when their underlying catalog data changes
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* Use dependency information to dump data in proper order
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@ -364,7 +279,6 @@ Dependency Checking
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Transactions
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============
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* -Allow autocommit so always in a transaction block
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* Overhaul bufmgr/lockmgr/transaction manager
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* Allow savepoints / nested transactions [transactions]
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@ -374,7 +288,6 @@ Exotic Features
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* Add sql3 recursive unions
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* Add the concept of dataspaces/tablespaces [tablespaces]
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* -Add SQL92 schemas (Tom)
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* Allow queries across multiple databases [crossdb]
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* Add pre-parsing phase that converts non-ANSI features to supported features
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* Allow plug-in modules to emulate features from other databases
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@ -397,7 +310,6 @@ Fsync
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Cache
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=====
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* -Cache most recent query plan(s) (Neil) [prepare]
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* Shared catalog cache, reduce lseek()'s by caching table size in shared area
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* Add free-behind capability for large sequential scans (Bruce)
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* Allow binding query args over FE/BE protocol
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@ -436,7 +348,6 @@ Startup Time
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* Do listen() in postmaster and accept() in pre-forked backend
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* Have pre-forked backend pre-connect to last requested database or pass
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file descriptor to backend pre-forked for matching database
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* -Cache system catalog information in per-database files (Tom)
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Write-Ahead Log
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@ -447,8 +358,6 @@ Write-Ahead Log
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partial page writes [wal]
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* Turn off after-change writes if fsync is disabled (?)
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* Add WAL index reliability improvement to non-btree indexes
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* -Reorder postgresql.conf WAL items in order of importance (Bruce)
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* -Remove wal_files postgresql.conf option because WAL files are now recycled
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* Find proper defaults for postgresql.conf WAL entries
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* Add checkpoint_min_warning postgresql.conf option to warn about checkpoints
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that are too frequent
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@ -462,14 +371,8 @@ Optimizer / Executor
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* Improve Subplan list handling
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* Allow Subplans to use efficient joins(hash, merge) with upper variable
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* -Improve dynamic memory allocation by introducing tuple-context memory
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allocation (Tom)
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* Add hash for evaluating GROUP BY aggregates
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* -Nested FULL OUTER JOINs don't work (Tom)
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* Allow merge and hash joins on expressions not just simple variables (Tom)
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* -Add new pg_proc cachable settings to specify whether function can be
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evaluated only once or once per query
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* -Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce)
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* Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]
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* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
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* Allow ORDER BY ... LIMIT to select top values without sort or index
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@ -491,33 +394,20 @@ Miscellaneous
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when it is available
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* Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
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* Improve caching of attribute offsets when NULLs exist in the row
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* -Add Intimate Shared Memory(ISM) for Solaris
|
||||
* -Use faster flex flags for performance improvement (Peter E)
|
||||
* -Add BSD-licensed qsort() for Solaris
|
||||
|
||||
|
||||
Source Code
|
||||
===========
|
||||
|
||||
* Add use of 'const' for variables in source tree
|
||||
* -Fix problems with libpq non-blocking/async code
|
||||
* -Make sure all block numbers are unsigned to increase maximum table size
|
||||
* -Merge LockMethodCtl and LockMethodTable into one shared structure (Bruce)
|
||||
* -HOLDER/HOLDERTAB rename to PROCLOCK/PROCLOCKTAG (Bruce)
|
||||
* -Remove LockMethodTable.prio field, not used (Bruce)
|
||||
* Rename some /contrib modules from pg* to pg_*
|
||||
* Move some things from /contrib into main tree
|
||||
* Remove warnings created by -Wcast-align
|
||||
* Move platform-specific ps status display info from ps_status.c to ports
|
||||
* -Make one version of simple_prompt() in code (Bruce, Tom)
|
||||
* -Compile in syslog functionaility by default (Tatsuo)
|
||||
* Modify regression tests to prevent failures do to minor numeric rounding
|
||||
* Add OpenBSD's getpeereid() call for local socket authentication (Bruce)
|
||||
* Improve access-permissions check on data directory in Cygwin (Tom)
|
||||
* -Report failure to find readline or zlib at end of configure run
|
||||
* Add --port flag to regression tests
|
||||
* -Increase identifier length (NAMEDATALEN) if small performance hit,
|
||||
* -Increase maximum number of function parameters if little wasted space
|
||||
* Add documentation for perl, including mention of DBI/DBD perl location
|
||||
* Add optional CRC checksum to heap and index pages
|
||||
* Change representation of whole-tuple parameters to functions
|
||||
@ -526,8 +416,6 @@ Source Code
|
||||
* Remove or relicense modules that are not under the BSD license, if possible
|
||||
* Remove memory/file descriptor freeing befor elog(ERROR) (Bruce)
|
||||
* Create native Win32 port [win32]
|
||||
* -Fix glibc's mktime() to handle pre-1970's dates
|
||||
* -Move /contrib/retep to gborg.postgresql.org
|
||||
* Acquire lock on a relation before building a relcache entry for it
|
||||
* Move dbmirror and rserv from /contrib to gborg.postgresql.org
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user