--- /dev/null
+<!-- doc/src/sgml/release-9.3.sgml -->
+<!-- See header comment in release.sgml about typical markup -->
+
+ <sect1 id="release-9-3">
+ <title>Release 9.3</title>
+
+ <note>
+ <title>Release Date</title>
+ <simpara>2013-XX-XX, CURRENT AS OF 2013-04-20</simpara>
+ </note>
+
+ <sect2>
+ <title>Overview</title>
+
+ <para>
+ ADD HERE Major enhancements include:
+ </para>
+
+ <!-- This list duplicates items below, but without authors or details-->
+
+ <para>
+ The above items are explained in more detail in the sections below.
+ </para>
+
+ </sect2>
+
+ <sect2>
+
+ <title>Migration to Version 9.3</title>
+
+ <para>
+ A dump/restore using <link
+ linkend="APP-PG-DUMPALL"><application>pg_dumpall</></link>, or use
+ of <link linkend="pgupgrade"><application>pg_upgrade</></link>, is
+ required for those wishing to migrate data from any previous release.
+ </para>
+
+ <para>
+ Version 9.3 contains a number of changes that may affect compatibility
+ with previous releases. Observe the following incompatibilities:
+ </para>
+
+ <sect3>
+ <title>ADD HERE</title>
+ <para>here</para>
+ </sect3>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <para>
+ Below you will find a detailed account of the changes between
+ <productname>PostgreSQL</productname> 9.3 and the previous major
+ release.
+ </para>
+
+ <sect3>
+ <title>Server</title>
+
+ <sect4>
+ <title>Performance</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve performance of NUMERIC calculations (Kyotaro Horiguchi)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use a binary heap for Merge-Append operations (Abhijit Menon-Sen)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add COPY FREEZE option to avoid the overhead of later marking
+ tuples as committed (Simon Riggs, Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve memory usage for in-memory sorts (Jeff Janes)
+ </para>
+
+ <para>
+ Users who have set work_mem based on the previous behavior should
+ revisit that setting.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance for transactions creating, rebuilding, or
+ dropping many relations (Jeff Janes, Tomas Vondra)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance of the CREATE TABLE ... ON COMMIT DELETE ROWS
+ clause by only issuing delete if the temporary table was accessed
+ (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow heap-only tuple updates on system tables (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have vacuum recheck visibility after it has removed expired tuples
+ (Pavan Deolasee)
+ </para>
+
+ <para>
+ This increases the chance of a page being marked as all-visible.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Split pgstat file in per-database and global files (Tomas Vondra)
+ </para>
+
+ <para>
+ This reduces the statistics management read and write overhead.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Optimizer</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Reduce optimizer overhead by discarding plans with unneeded cheaper
+ startup costs (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Collect and use histograms of lower and upper bounds for range types
+ (Alexander Korotkov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve the ability to detect indexable prefixes in regular
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve optimizer cost estimation for index access (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Indexes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Reduce use of heavyweight locking inside hash AM.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve concurrency of hash indexes (Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add SP-GiST support for range data types (Alexander Korotkov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow unlogged GiST indexes (Jeevan Chalke)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow SP-GiST to support of the range adjacent operator (Alexander
+ Korotkov)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Locking</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Prevent non-key-field row updates from locking foreign key rows
+ (AlvaroAacute;lvaro Herrera, Marti Raudsepp, Alexander Shulgin,
+ Noah Misch and Andres Freund)
+ </para>
+
+ <para>
+ This improves concurrency and reduces the probability of deadlocks.
+ UPDATEs on non-key columns use the new SELECT FOR NO KEY UPDATE lock
+ type, and foreign key checks use the new SELECT FOR KEY SHARE lock mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add cache of local locks (Jeff Janes)
+ </para>
+
+ <para>
+ This speeds lock release at statement completion in transactions
+ that hold many locks; it is particularly useful for pg_dump.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Authentication</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve LDAP error reporting and documentation (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for LDAP authentication to be specified in URL format
+ (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change the ssl_ciphers parameter to start with DEFAULT, rather
+ than ALL, then remove insecure ciphers (Magnus Hagander)
+ </para>
+
+ <para>
+ It is assumed DEFAULT is more appropriate cipher set.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Parse/load pg_ident.conf once, not during each connection (Amit
+ Kapila)
+ </para>
+
+ <para>
+ This is similar to how pg_hba.conf is processed.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Monitoring</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow the statistics collector to operate properly in cases where
+ the system clock goes backwards (Tom Lane)
+ </para>
+
+ <para>
+ Previously statistics collection would stop until the time again
+ reached the previously-stored latest time.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add optional ability to checksum data pages and report corruption
+ (Simon Riggs, Jeff Davis, Greg Smith)
+ </para>
+
+ <para>
+ The checksum option can be set during initdb.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add function to report the size of the GIN pending index insertion
+ list (Fujii Masao)
+ </para>
+
+ <para>
+ The function is pgstatginindex() in pgstattuple.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pg_terminate_backend() to terminate other backends with
+ the same role (Dan Farina)
+ </para>
+
+ <para>
+ Previously, only superusers could terminate other sessions.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Server Settings</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Dramatically reduce System V shared memory usage (Robert Haas)
+ </para>
+
+ <para>
+ Instead, on Unix-like systems, mmap() is used for shared memory.
+ This eliminates the requirement of increasing System V shared
+ memory kernel parameters.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Increase the maximum initdb-configured value for shared_buffers
+ to 128MB (Robert Haas)
+ </para>
+
+ <para>
+ This is the maximum value initdb attempts to set in
+ postgresql.conf; the previous value was 32MB.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow a directory of configuration files to be processed (Magnus
+ Hagander, Greg Smith, Selena Deckelmann)
+ </para>
+
+ <para>
+ The directory is specified as include_dir in server configuration file.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have "session id" in log_line_prefix (%c) always output four hex
+ digits after the period (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add configuration variable lock_timeout to limit lock wait duration
+ (Zoltán Böszörményi)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove the external PID file on postmaster exit (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve grouping of sessions waiting for commit_delay (Peter
+ Geoghegan)
+ </para>
+
+ <para>
+ This improves the usefulness of commit_delay.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Require superuser privileges to set commit_delay because it
+ can now potentially delay other sessions (Simon Riggs)
+ BACKWARD COMPATIBILITY
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow the postmaster to listen on multiple Unix-domain sockets
+ (Honza Horak)
+ </para>
+
+ <para>
+ This renames configuration parameter unix_socket_directory to
+ unix_socket_directories, which accepts a list of directories.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Replication and Recovery</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add SQL functions pg_backup_in_progress() and pg_backup_start_time() (Darold Gilles)
+ </para>
+
+ <para>
+ These functions report the status of base backups.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance of streaming replication log shipping (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add the last checkpoint's redo location to pg_controldata's output
+ (Fujii Masao)
+ </para>
+
+ <para>
+ This information is useful for determining the WAL files needed for
+ restore.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow tooling like pg_receivexlog to run on computers with different
+ architectures (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow a streaming replication standbys to follow a timeline switch (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This allows streaming standbys to feed from newly-promoted slaves.
+ Previously slaves required access to a WAL archive directory to
+ accomplish this.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have pg_basebackup --write-recovery-conf output a minimal
+ recovery.conf (Zoltan Boszormenyi, Magnus Hagander)
+ </para>
+
+ <para>
+ This simplifies setting up a standby server.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pg_receivexlog and pg_basebackup -X to handle streaming
+ timeline switches (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add wal_receiver_timeout parameter to control the WAL receiver
+ timeout (Amit Kapila)
+ </para>
+
+ <para>
+ This allows more rapid detection of connection failure. No longer set
+ wal_receiver_status_interval?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Rename replication_timeout to wal_sender_timeout (Amit Kapila)
+ </para>
+
+ <para>
+ BACKWARD COMPATIBILITY
+ This setting controls the WAL sender timeout.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow recovery.conf to be relocated using configuration variable
+ recovery_config_directory (Simon Riggs)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title>WAL</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Store WAL in a continuous stream, rather than skipping the last
+ 16MB segment every 4GB (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Restructure WAL files to better handle timeline changes during
+ recovery (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Restructure WAL files to use a more compact storage format (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Queries</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Implement SQL-standard LATERAL for FROM-clause subqueries and
+ function calls (Tom Lane)
+ </para>
+
+ <para>
+ This is useful in allowing FROM subqueries and functions to reference
+ output from tables in the FROM clause. The LATERAL keyword is optional
+ for functions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve query string error location reporting (Tom Lane)
+ </para>
+
+ <para>
+ Only CREATE SCHEMA IF NOT EXISTS? If so, remove it.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Correct predicate locking for DROP INDEX CONCURRENTLY (Kevin Grittner)
+ KEEP?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for piping COPY and psql \copy to/from an external program (Etsuro
+ Fujita)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Object Manipulation</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add support to event triggers (Dimitri Fontaine, Tom Lane)
+ </para>
+
+ <para>
+ This allows C functions to be called when specific commands are run.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow a multi-row VALUES clause in rules to reference OLD/NEW (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add IF NOT EXISTS clause to CREATE SCHEMA (Fabrízio de Royes Mello)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Throw an error if expiring tuple is again updated or deleted (Kevin Grittner)
+ KEEP?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have DROP OWNED only remove user-matching GRANTs on shared objects,
+ e.g. databases, tablespaces (AlvaroAacute;lvaro Herrera)
+ </para>
+
+ <para>
+ Previously it tried to remove such objects, leading to an error.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have REASSIGN OWNED also change ownership of shared objects (AlvaroAacute;lvaro
+ Herrera)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title>Constraints</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Internally store default foreign key matches (non-FULL, non-PARTIAL) as "simple" (Tom Lane)
+ </para>
+
+ <para>
+ These were previously stored as "&unspecified&".
+ This changes the value stored in system column
+ pg_constraint.confmatchtype. BACKWARD COMPATIBILITY CHANGE
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change ON UPDATE SET NULL/SET DEFAULT foreign key actions to affect
+ all referenced columns, not just those referenced in the UPDATE
+ (Tom Lane)
+ </para>
+
+ <para>
+ Previously only columns referenced in the UPDATE were set to null or DEFAULT.
+ BACKWARD COMPATIBILITY CHANGE
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Provide clients with constraint violation details as separate fields
+ (Pavel Stehule)
+ </para>
+
+ <para>
+ This allows clients to retrieve table, column, data type, or constraint
+ name error details. Previously such information had to be extracted from
+ error strings. Client language support is required to access these
+ fields.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><command>ALTER</></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add support for ALTER RULE ... RENAME (Ali Dar)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add ALTER ROLE ALL SET to add settings to all users (Peter Eisentraut)
+ </para>
+
+ <para>
+ This allows settings to apply to all users in all databases. ALTER
+ DATABASE SET already allowed addition of settings for all users in a
+ single database. postgresql.conf has a similar effect.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add the ALTER TYPE ... IF NOT EXISTS clause when adding enumerated type labels (Andrew
+ Dunstan)
+ </para>
+
+ <para>
+ This is useful for conditional label creation in transaction blocks.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="rules-views"><command>VIEWs</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ When converting a table to a view, remove its system columns (Tom Lane)
+ KEEP?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make simple views auto-updatable (Dean Rasheed)
+ </para>
+
+ <para>
+ INSTEAD rules are still available for complex views.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow views and rules to handle cases where referenced tables are
+ renamed, or columns are renamed, added, or dropped (Tom Lane)
+ HOW DOES IT HANDLE A DROPPED REFERENCED COLUMN?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add CREATE RECURSIVE VIEW syntax (Peter Eisentraut)
+ </para>
+
+ <para>
+ Internally this is translated into CREATE VIEW ... WITH RECURSIVE.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a materialized view relations (Kevin Grittner)
+ </para>
+
+ <para>
+ Unlink ordinary views, where the base tables are read on every access,
+ materialized views create physical tables at creation or refresh time.
+ Access to the materialized view reads from these materialized physical
+ tables. There is no facility for incrementally refreshing materialized
+ views or auto-accessing them via base table access.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="SQL-CREATETABLE"><command>CREATE TABLE</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ No longer output messages about implicit index and sequence creation (Robert Haas)
+ </para>
+
+ <para>
+ These messages now appear with DEBUG1-level output.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow CREATE TABLE to succeed for a non-existent schema
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ Previously, CREATE TABLE IF EXIST threw an error if the schema was
+ nonexistent.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Data Types</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow text timezone designations, e.g. "America/Chicago" when using the
+ ISO "T" timestamptz format (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Increase the maximum length of large objects from 2GB to 4TB (Nozomi
+ Anzai, Yugo Nagata)
+ </para>
+
+ <para>
+ This change includes new libpq and server-side 64-bit-enabled functions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add functions to convert values, records, and hstore data to JSON (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add operators and functions to extract values from JSON data strings
+ (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow JSON data strings to be converted into records (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Functions</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add array_remove() and array_replace() functions (Marco Nenciarini, Gabriele Bartolini)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have to_char(), to_date(), and to_timestamp() properly handle
+ negative century designations (CC) (Bruce Momjian)
+ </para>
+
+ <para>
+ Previously the behavior was either wrong or inconsistent with
+ positive/AD handling, e.g. format mask 'IYYY-IW-DY'.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In to_date() and to_timestamp(), return proper results when mixing
+ ISO and Gregorian week/day designations (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow concat() and format() to properly expand VARIADIC-labeled
+ arguments (Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Cause pg_get_viewdef() to default to wrapping after every SELECT
+ target list and FROM entry (Marko Tiikkaja)
+ </para>
+
+ <para>
+ This causes view output, like from pg_dump, to be more narrow.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have map_sql_value_to_xml_value() properly expand domains (Pavel
+ Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve format() to handle field width and left/right alignment
+ (Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Force cached functions to be replanned if the search_path changes (Tom Lane)
+ </para>
+
+ <para>
+ Previously functions already run in the current session ignored changes
+ (Bruce Momjian)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Server-Side Languages</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow SPI functions to access the number of rows processed by COPY (Pavel
+ Stehule)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="plpgsql">PL/pgSQL</link> Server-Side Language</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow greater flexibility in where keywords can be used in PL/pgSQL (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow PL/pgSQL to access the number of rows processed by COPY (Pavel
+ Stehule)
+ </para>
+
+ <para>
+ The command is GET DIAGNOSTICS x = ROW_COUNT.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow PL/pgSQL to use RETURN with a composite-type expressions (Asif
+ Rehman)
+ </para>
+
+ <para>
+ Previously RETURN could only reference composite-type variables.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="plpython">PL/Python</link> Server-Side Language</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow PL/Python to support platform-specific include directories (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow PL/Python on OS X to build against custom versions of Python
+ (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Handle SPIErrors raised explicitly with PL/Python's RAISE the same as
+ as internal SPI errors (Oskari Saarenmaa and Jan Urbanski)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add PL/Python result object string handler (Peter Eisentraut)
+ </para>
+
+ <para>
+ This allows plpy.debug(rv) to output something reasonable.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have PL/Python convert oid values to a proper Python numeric type (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Client Applications</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Have initdb fsync the newly created data directory (Jeff Davis)
+ </para>
+
+ <para>
+ This can be disabled by using --nosync.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add initdb --sync-only option to sync the data directory to durable
+ storage (Bruce Momjian)
+ </para>
+
+ <para>
+ This is used by pg_upgrade.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support multiple --table arguments for pg_restore, clusterdb,
+ reindexdb, and vacuumdb (Josh Kupershmidt)
+ </para>
+
+ <para>
+ This is similar to the pg_dump --table support.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add command-line utility pg_isready to check if the server is ready
+ to accept connections (Phil Sorber)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have initdb issue a warning about placing the data directory at the
+ top of file system mount points (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add -d option to pg_dumpall, pg_basebackup, pg_receivexlog to
+ specify the connection string (Amit Kapila)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pg_ctl --idempotent to a 'success' return code if the requested
+ start/stop action fails, but the cluster is already in the requested
+ state (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change pg_ctl to return an error code if start fails because the
+ server is already running (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add libpq function PQconninfo() to return connection information
+ (Zoltan Boszormenyi, Magnus Hagander)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="APP-PSQL"><application>psql</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow the psql --single-transaction mode to work when reading from
+ standard input (Fabien Coelho, Robert Haas)
+ </para>
+
+ <para>
+ Previously this option only worked when reading from a file.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve psql tab completion (Jeff Janes, Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove psql warning when connecting to an older server (Peter Eisentraut)
+ </para>
+
+ <para>
+ The warning when connecting to a newer server was retained.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Adjust function cost settings so psql tab completion and pattern
+ searching is more efficient (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect5>
+ <title>Backslash Commands</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add SSL information to psql's \conninfo command (Alastair Turner)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In psql, do not allow \connect to use defaults if there is no active
+ connection (Bruce Momjian)
+ </para>
+
+ <para>
+ This might be the case if the server had crashed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add "Security" label to psql \df+ output (Jon Erdman)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly reset state if psql's "\g file" command failed (Tom Lane)
+ </para>
+
+ <para>
+ Previously failed commands discarded output from subsequent commands.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add psql command \gset to store query results in psql variables
+ (Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add psql \watch command to repeatedly execute commands (Will
+ Leinweber)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow psql \l to accept a database name pattern (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+
+ <sect5>
+ <title>Output</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add a 'latex-longtable' output format to psql (Bruce Momjian)
+ </para>
+
+ <para>
+ Longtable allows tables to span multiple pages.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a border=3 output mode to the psql 'latex' format (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In psql tuples-only and expanded modes, no longer output "(No rows)"
+ (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In psql, no longer print an empty line for unaligned, expanded
+ output for zero rows (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="APP-PGDUMP"><application>pg_dump</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix tar files emitted by pg_dump and pg_basebackup to be POSIX
+ conformant (Brian Weaver, Tom Lane)
+ </para>
+ </listitem>
+
+
+ <listitem>
+ <para>
+ Have pg_dump output functions in a predictable order (Joel Jacobson)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add -d/--dbname option to pg_dump, for consistency with other client
+ commands (Heikki Linnakangas)
+ </para>
+
+ <para>
+ The database name could already be supplied last without a flag.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add pg_dump --jobs to dump in parallel (Joachim Wieland)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Source Code</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Remove typedefs for int2/int4 as they are better represented as int16/int32 (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Create a centralized timeout API (Zoltán Böszörményi)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Rewrite pgindent in Perl (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add compiler designations to indicate some ereport() and elog()
+ calls do not return (Peter Eisentraut, Andres Freund, Tom Lane,
+ Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix install-strip on Mac OS X (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove configure flag --disable-shared, as it is no longer used (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add emacs macro to match Postgres perltidy formatting (Peter
+ Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Run tool to check the keyword list when the backend grammar is changed (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Standardize on naming of client-side memory allocation functions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Centralize flex and bison 'make' rules (Peter Eisentraut)
+ </para>
+
+ <para>
+ This is useful for pgxs authors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add an embedded list interface (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add infrastructure to better support plug-in background worker
+ processes (AlvaroAacute;lvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add Assert() functionality to client-side code for frontend code (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change many internal many backend functions to return OIDs rather
+ than void (Dimitri Fontaine)
+ </para>
+
+ <para>
+ This is useful for event triggers.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow options to be passed to the regression test output comparison
+ utility via PG_REGRESS_DIFF_OPTS (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Create libpgcommon and move pg_malloc() and other functions there
+ (AlvaroAacute;lvaro Herrera, Andres Freund)
+ </para>
+
+ <para>
+ This allows libpgport to be used solely for porting code.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Invent pre-commit/pre-prepare/pre-subcommit events for transaction
+ callbacks (Tom Lane)
+ </para>
+
+ <para>
+ Loadable modules that use transaction callbacks might need modification
+ to handle these new event types.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add function pg_identify_object() to dump an object in
+ machine-readable format (AlvaroAacute;lvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve ability to detect official timezone abbreviation changes
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add pkg-config support libpq and ecpg libraries (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add post-ALTER-object server hooks (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove src/tool/backend, now that the content is on the Postgres
+ wiki (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Split out WAL reading as an independent facility (Andres Freund, Heikki
+ Linnakangas)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Additional Modules</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Have oid2name, pgbench, and vacuumlo set fallback_application_name (Amit Kapila)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve output of pg_test_timing (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve pg_test_fsync output (Peter Geoghegan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve contrib/dblink option validator (Tom Lane)
+ </para>
+
+ <para>
+ Details?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a Postgres foreign data wrapper contrib module (Shigeru Hanada)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add pg_xlogdump contrib program (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow write to Postgres foreign tables (KaiGai Kohei)
+ </para>
+
+ <para>
+ Other foreign data wrappers can now also potentially support write
+ operations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve pg_trgm handling of multibyte characters (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for indexing of regular-expression searches in
+ contrib/pg_trgm (Alexander Korotkov)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="pgupgrade"><application>pg_upgrade</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Increase pg_upgrade logging content by showing executed command
+ (AlvaroAacute;lvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have pg_upgrade create unix-domain sockets in the current directory
+ (Bruce Momjian, Tom Lane)
+ </para>
+
+ <para>
+ This reduces the possibility that someone will accidentally connect
+ during the upgrade.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have pg_upgrade --check mode properly detect the location of
+ non-default socket directories (Bruce Momjian, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance of pg_upgrade for databases with many tables (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve pg_upgrade's status display during copy/link (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pg_upgrade --jobs to do parallelism (Bruce Momjian)
+ </para>
+
+ <para>
+ This allows parallel schema dump/restore of databases, as well as
+ parallel copy/link of data files per tablespace.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="pgbench"><application>pgbench</></link></title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Add --foreign-keys option to pgbench (Jeff Janes)
+ </para>
+
+ <para>
+ This adds foreign key constraints to tables, for use in foreign
+ key performance testing.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce and improve the status message output of pgbench's
+ initialization mode (Robert Haas, Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add pg_bench --sampling-rate option to control the percentage of
+ transactions logged (Tomas Vondra)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add pgbench -q mode to print one output line every five seconds (Tomas Vondra)
+ </para>
+
+ <para>
+ Output pgbench elapsed and estimated remaining time during
+ initialization logging (Tomas Vondra)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pgbench to aggregate performance statistics and produce output
+ every --aggregate-interval specified seconds (Tomas Vondra)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow pgbench to use scale values larger than 21474 (Greg Smith)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Documentation</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve WINDOW function documentation (Bruce Momjian, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add instructions for setting up the documentation tool chain on
+ Mac OS X (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update FreeBSD kernel configuration documentation (Brad Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow EPUB-format documentation to be created (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve commit_delay documentation (Peter Geoghegan)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ </sect2>
+ </sect1>
projects / postgresql / commitdiff