Release date: 2023-09-14
PostgreSQL 16 contains many new features and enhancements, including:
Allow parallelization of FULL and internal right OUTER hash joins
Allow logical replication from standby servers
Allow logical replication subscribers to apply large transactions in parallel
Allow monitoring of I/O statistics using the new pg_stat_io view
Add SQL/JSON constructors and identity functions
Improve performance of vacuum freezing
Add support for regular expression matching of user and database names in pg_hba.conf, and user names in pg_ident.conf
The above items and other new features of PostgreSQL 16 are explained in more detail in the sections below.
A dump/restore using pg_dumpall or use of pg_upgrade or logical replication is required for those wishing to migrate data from any previous release. See Section 19.6 for general information on migrating to new major releases.
Version 16 contains a number of changes that may affect compatibility with previous releases. Observe the following incompatibilities:
Change assignment rules for PL/pgSQL bound cursor variables (Tom Lane) §
Previously, the string value of such variables
was set to match the variable name during cursor
assignment; now it will be assigned during OPEN,
and will not match the variable name. To restore the previous
behavior, assign the desired portal name to the cursor variable
before OPEN.
Disallow NULLS NOT
DISTINCT indexes for primary keys (Daniel
Gustafsson)
§
Change REINDEX
DATABASE and reindexdb
to not process indexes on system catalogs (Simon Riggs)
§
§
Processing such indexes is still possible using REINDEX
SYSTEM and reindexdb
--system.
Tighten GENERATED
expression restrictions on inherited and partitioned tables (Amit
Langote, Tom Lane)
§
Columns of parent/partitioned and child/partition tables must all have the same generation status, though now the actual generation expressions can be different.
Remove pg_walinspect
functions
pg_get_wal_records_info_till_end_of_wal()
and pg_get_wal_stats_till_end_of_wal()
(Bharath Rupireddy)
§
Rename server variable
force_parallel_mode to debug_parallel_query
(David Rowley)
§
§
Remove the ability to create
views manually with ON SELECT rules
(Tom Lane)
§
Remove the server variable
vacuum_defer_cleanup_age (Andres Freund)
§
This has been unnecessary since hot_standby_feedback
and replication
slots were added.
Remove server variable promote_trigger_file
(Simon Riggs)
§
This was used to promote a standby to primary, but is now more easily
accomplished with pg_ctl
promote or pg_promote().
Remove read-only server variables lc_collate
and lc_ctype (Peter Eisentraut)
§
Collations and locales can vary between databases so having them as read-only server variables was unhelpful.
Role inheritance now controls the default
inheritance status of member roles added during GRANT (Robert Haas)
§
The role's default inheritance behavior can be overridden with the
new GRANT ... WITH INHERIT clause. This allows
inheritance of some roles and not others because the members'
inheritance status is set at GRANT time.
Previously the inheritance status of member roles was controlled
only by the role's inheritance status, and changes to a role's
inheritance status affected all previous and future member roles.
Restrict the privileges of CREATEROLE
and its ability to modify other roles (Robert Haas)
§
§
Previously roles with CREATEROLE privileges could
change many aspects of any non-superuser role. Such changes,
including adding members, now require the role requesting
the change to have ADMIN OPTION permission.
For example, they can now change the CREATEDB,
REPLICATION, and BYPASSRLS
properties only if they also have those permissions.
Remove symbolic links for the postmaster binary (Peter Eisentraut) §
Below you will find a detailed account of the changes between PostgreSQL 16 and the previous major release.
Allow incremental sorts in more cases, including
DISTINCT (David Rowley)
§
§
Add the ability for aggregates having ORDER BY
or DISTINCT to use pre-sorted data (David
Rowley)
§
§
§
The new server variable enable_presorted_aggregate
can be used to disable this.
Allow memoize atop a UNION ALL (Richard Guo)
§
Allow anti-joins to be performed with the non-nullable input as the inner relation (Richard Guo) §
Allow parallelization of FULL and internal
right OUTER hash joins (Melanie Plageman,
Thomas Munro)
§
Improve the accuracy of GIN index access optimizer
costs (Ronan Dunklau)
§
Allow more efficient addition of heap and index pages (Andres Freund) § §
During non-freeze operations, perform page freezing where appropriate (Peter Geoghegan) § § §
This makes full-table freeze vacuums less necessary.
Allow window functions to use the faster ROWS
mode internally when RANGE mode is active but
unnecessary (David Rowley)
§
Allow optimization of always-increasing window functions ntile(),
cume_dist() and
percent_rank() (David Rowley)
§
Allow aggregate functions string_agg()
and array_agg() to be parallelized (David
Rowley)
§
Improve performance by caching RANGE
and LIST partition lookups (Amit Langote,
Hou Zhijie, David Rowley)
§
Allow control of the shared buffer usage by vacuum and analyze (Melanie Plageman) § § §
The VACUUM/ANALYZE
option is BUFFER_USAGE_LIMIT, and the vacuumdb
option is --buffer-usage-limit.
The default value is set by server variable vacuum_buffer_usage_limit,
which also controls autovacuum.
Support wal_sync_method=fdatasync
on Windows (Thomas Munro)
§
Allow HOT
updates if only BRIN-indexed columns are updated
(Matthias van de Meent, Josef Simanek, Tomas Vondra)
§
Improve the speed of updating the process title (David Rowley) §
Allow xid/subxid searches and
ASCII string detection to use vector operations
(Nathan Bossart, John Naylor)
§
§
§
§
ASCII detection is particularly useful for
COPY FROM.
Vector operations are also used for some C array searches.
Reduce overhead of memory allocations (Andres Freund, David Rowley) §
Add system view pg_stat_io
view to track I/O statistics (Melanie Plageman)
§
§
§
§
§
Record statistics on the last sequential and index scans on tables (Dave Page) §
This information appears in pg_stat_*_tables
and pg_stat_*_indexes.
Record statistics on the occurrence of updated rows moving to new pages (Corey Huinker) §
The pg_stat_*_tables column is n_tup_newpage_upd.
Add speculative lock information to the pg_locks
system view (Masahiko Sawada, Noriyoshi Shinoda)
§
The transaction id is displayed in the
transactionid column and
the speculative insertion token is displayed in the
objid column.
Add the display of prepared statement result types to the pg_prepared_statements
view (Dagfinn Ilmari Mannsåker)
§
§
Create subscription statistics
entries at subscription creation time so stats_reset
is accurate (Andres Freund)
§
Previously entries were created only when the first statistics were reported.
Correct the I/O
accounting for temp relation writes shown in pg_stat_database
(Melanie Plageman)
§
Add function pg_stat_get_backend_subxact()
to report on a session's subtransaction cache (Dilip Kumar)
§
Have pg_stat_get_backend_idset(),
pg_stat_get_backend_activity(), and related
functions use the unchanging backend id (Nathan Bossart)
§
Previously the index values might change during the lifetime of the session.
Report stand-alone backends with a special backend type (Melanie Plageman) §
Add wait event SpinDelay
to report spinlock sleep delays (Andres Freund)
§
Create new wait event DSMAllocate
to indicate waiting for dynamic shared memory allocation (Thomas
Munro)
§
Previously this type of wait was reported as
DSMFillZeroWrite, which was also used by
mmap() allocations.
Add the database name to the process title of logical WAL senders (Tatsuhiro Nakamori) §
Physical WAL senders do not display a database name.
Add checkpoint and REDO LSN information to log_checkpoints
messages (Bharath Rupireddy, Kyotaro Horiguchi)
§
Provide additional details during client certificate failures (Jacob Champion) §
Add predefined role pg_create_subscription
with permission to create subscriptions (Robert Haas)
§
Allow subscriptions to not require passwords (Robert Haas) § § §
This is accomplished with the option password_required=false.
Simplify permissions for LOCK
TABLE (Jeff Davis)
§
Previously a user's ability to perform LOCK
TABLE at various lock levels was limited to the
lock levels required by the commands they had permission
to execute on the table. For example, someone with UPDATE
permission could perform all lock levels except ACCESS
SHARE, even though it was a lesser lock level. Now users
can issue lesser lock levels if they already have permission for
greater lock levels.
Allow ALTER GROUP group_name
ADD USER user_name to be performed with ADMIN
OPTION (Robert Haas)
§
Previously CREATEROLE permission was required.
Allow GRANT
to use WITH ADMIN TRUE/FALSE
syntax (Robert Haas)
§
Previously only the WITH ADMIN OPTION syntax
was supported.
Allow roles that create other roles to automatically
inherit the new role's rights or the ability to SET ROLE to the
new role (Robert Haas, Shi Yu)
§
§
This is controlled by server variable createrole_self_grant.
Prevent users from changing the default privileges of non-inherited roles (Robert Haas) §
This is now only allowed for inherited roles.
When granting role membership, require the granted-by role to be a role that has appropriate permissions (Robert Haas) §
This is a requirement even when a non-bootstrap superuser is granting role membership.
Allow non-superusers to grant permissions using a granted-by user that is not the current user (Robert Haas) §
The current user still must have sufficient permissions given by the specified granted-by user.
Add GRANT to
control permission to use SET
ROLE (Robert Haas)
§
This is controlled by a new GRANT ... SET
option.
Add dependency tracking to roles which have granted privileges (Robert Haas) §
For example, removing ADMIN OPTION will fail if
there are privileges using that option; CASCADE
must be used to revoke dependent permissions.
Add dependency tracking of grantors for GRANT records
(Robert Haas)
§
This guarantees that pg_auth_members.grantor
values are always valid.
Allow multiple role membership records (Robert Haas) § §
Previously a new membership grant would remove a previous matching membership grant, even if other aspects of the grant did not match.
Prevent removal of superuser privileges for the bootstrap user (Robert Haas) §
Restoring such users could lead to errors.
Allow makeaclitem()
to accept multiple privilege names (Robins Tharakan)
§
Previously only a single privilege name, like SELECT, was
accepted.
Add support for Kerberos credential delegation (Stephen Frost) § § § §
This is enabled with server variable gss_accept_delegation
and libpq connection parameter gssdelegation.
Allow the SCRAM iteration
count to be set with server variable scram_iterations
(Daniel Gustafsson)
§
Improve performance of server variable management (Tom Lane) § §
Tighten restrictions on which server variables can be reset (Masahiko Sawada) §
Previously, while certain variables, like transaction_isolation,
were not affected by RESET
ALL, they could be individually reset in
inappropriate situations.
Move various postgresql.conf
items into new categories (Shinya Kato)
§
This also affects the categories displayed in the pg_settings
view.
Prevent configuration file recursion beyond 10 levels (Julien Rouhaud) §
Allow autovacuum to more frequently honor changes to delay settings (Melanie Plageman) § §
Rather than honor changes only at the start of each relation, honor them at the start of each block.
Remove restrictions that archive files be durably renamed (Nathan Bossart) § §
The archive_command
command is now more likely to be called with already-archived
files after a crash.
Prevent archive_library
and archive_command
from being set at the same time (Nathan Bossart)
§
Previously archive_library would override
archive_command.
Allow the postmaster to terminate children with an abort signal (Tom Lane) §
This allows collection of a core dump for a
stuck child process. This is controlled by send_abort_for_crash
and send_abort_for_kill.
The postmaster's -T switch is now the same as
setting send_abort_for_crash.
Remove the non-functional postmaster -n option
(Tom Lane)
§
Allow the server to reserve backend slots for roles with pg_use_reserved_connections
membership (Nathan Bossart)
§
The number of reserved slots is set by server variable reserved_connections.
Allow huge pages to work on newer versions of Windows 10 (Thomas Munro) §
This adds the special handling required to enable huge pages on newer versions of Windows 10.
Add debug_io_direct
setting for developer usage (Thomas Munro, Andres Freund,
Bharath Rupireddy)
§
§
While primarily for developers, wal_sync_method=open_sync/open_datasync
has been modified to not use direct I/O with
wal_level=minimal; this is now enabled with
debug_io_direct=wal.
Add function pg_split_walfile_name()
to report the segment and timeline values of WAL
file names (Bharath Rupireddy)
§
§
Add support for regular expression matching on database and role
entries in pg_hba.conf (Bertrand Drouvot)
§
Regular expression patterns are prefixed with a slash. Database
and role names that begin with slashes need to be double-quoted
if referenced in pg_hba.conf.
Improve user-column handling of pg_ident.conf
to match pg_hba.conf (Jelte Fennema)
§
Specifically, add support for all, role
membership with +, and regular expressions
with a leading slash. Any user name that matches these patterns
must be double-quoted.
Allow include files in pg_hba.conf and
pg_ident.conf (Julien Rouhaud)
§
These are controlled by include,
include_if_exists, and
include_dir. System views pg_hba_file_rules
and pg_ident_file_mappings
now display the file name.
Allow pg_hba.conf tokens to be of unlimited
length (Tom Lane)
§
Add rule and map numbers to the system view pg_hba_file_rules
(Julien Rouhaud)
§
Determine the default encoding from the locale when using ICU (Jeff Davis) §
Previously the default was always UTF-8.
Have CREATE
DATABASE and CREATE
COLLATION's LOCALE options, and
initdb
and createdb
--locale options, control
non-libc collation providers (Jeff
Davis)
Previously they only controlled libc providers.
Add predefined collations unicode and
ucs_basic (Peter Eisentraut)
§
This only works if ICU support is enabled.
Allow custom ICU collation rules to be created (Peter Eisentraut) §
This is done using CREATE
COLLATION's new RULES
clause, as well as new options for CREATE
DATABASE, createdb,
and initdb.
Allow Windows to import system locales automatically (Juan José Santamaría Flecha) §
Previously, only ICU locales could be imported on Windows.
Allow logical decoding on standbys (Bertrand Drouvot, Andres Freund, Amit Khandekar) § § §
Snapshot WAL records are
required for logical slot creation but cannot be
created on standbys. To avoid delays, the new function pg_log_standby_snapshot()
allows creation of such records.
Add server variable to control how logical decoding publishers transfer changes and how subscribers apply them (Shi Yu) § § §
The variable is debug_logical_replication_streaming.
Allow logical replication initial table synchronization to copy rows in binary format (Melih Mutlu) §
This is only possible for subscriptions marked as binary.
Allow parallel application of logical replication (Hou Zhijie, Wang Wei, Amit Kapila) § § §
The CREATE
SUBSCRIPTION STREAMING
option now supports parallel to enable
application of large transactions by parallel workers. The number
of parallel workers is controlled by the new server variable max_parallel_apply_workers_per_subscription.
Wait events LogicalParallelApplyMain,
LogicalParallelApplyStateChange, and
LogicalApplySendData were also added. Column
leader_pid was added to system view pg_stat_subscription
to track parallel activity.
Improve performance for logical replication apply without a primary key (Onder Kalaci, Amit Kapila) §
Specifically, REPLICA IDENTITY FULL can now
use btree indexes rather than sequentially scanning the table to
find matches.
Allow logical replication subscribers to process only changes that have no origin (Vignesh C, Amit Kapila) § §
This can be used to avoid replication loops. This is controlled
by the new CREATE SUBSCRIPTION ... ORIGIN option.
Perform logical replication SELECT and
DML actions as the table owner (Robert Haas)
§
§
This improves security and now requires subscription
owners to be either superusers or to have SET ROLE
permission on all roles owning tables in the replication set.
The previous behavior of performing all operations as the
subscription owner can be enabled with the subscription run_as_owner
option.
Have wal_retrieve_retry_interval
operate on a per-subscription basis (Nathan Bossart)
§
Previously the retry time was applied
globally. This also adds wait events >LogicalRepLauncherDSA
and LogicalRepLauncherHash.
Add EXPLAIN
option GENERIC_PLAN to display the generic plan
for a parameterized query (Laurenz Albe)
§
Allow a COPY FROM
value to map to a column's DEFAULT (Israel
Barth Rubio)
§
Allow COPY
into foreign tables to add rows in batches (Andrey Lepikhov,
Etsuro Fujita)
§
This is controlled by the postgres_fdw
option batch_size.
Allow the STORAGE type to be specified by CREATE TABLE
(Teodor Sigaev, Aleksander Alekseev)
§
§
Previously only ALTER
TABLE could control this.
Allow truncate triggers on foreign tables (Yugo Nagata) §
Allow VACUUM and vacuumdb
to only process TOAST tables
(Nathan Bossart)
§
This is accomplished by having VACUUM
turn off PROCESS_MAIN or by vacuumdb
using the --no-process-main option.
Add VACUUM
options to skip or update all frozen statistics (Tom Lane,
Nathan Bossart)
§
The options are SKIP_DATABASE_STATS and
ONLY_DATABASE_STATS.
Change REINDEX
DATABASE and REINDEX SYSTEM
to no longer require an argument (Simon Riggs)
§
§
Previously the database name had to be specified.
Allow CREATE
STATISTICS to generate a statistics name if none
is specified (Simon Riggs)
§
Allow non-decimal integer literals (Peter Eisentraut) §
For example, 0x42F, 0o273,
and 0b100101.
Allow NUMERIC
to process hexadecimal, octal, and binary integers of any size
(Dean Rasheed)
§
Previously only unquoted eight-byte integers were supported with these non-decimal bases.
Allow underscores in integer and numeric constants (Peter Eisentraut, Dean Rasheed) §
This can improve readability for long strings of digits.
Accept the spelling +infinity in datetime input
(Vik Fearing)
§
Prevent the specification of epoch and
infinity together with other fields in datetime
strings (Joseph Koshakow)
§
Remove undocumented support for date input in the form
Y
(Joseph Koshakow)
§
yearMmonthDday
Add functions pg_input_is_valid()
and pg_input_error_info() to check for type
conversion errors (Tom Lane)
§
§
Add SQL/JSON constructors (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander Korotkov, Amit Langote) §
The new functions JSON_ARRAY(),
JSON_ARRAYAGG(),
JSON_OBJECT(), and
JSON_OBJECTAGG() are part of the
SQL standard.
Add SQL/JSON object checks (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander Korotkov, Amit Langote, Andrew Dunstan) §
The IS
JSON checks include checks for values, arrays,
objects, scalars, and unique keys.
Allow JSON string parsing to use vector operations (John Naylor) §
Improve the handling of full text highlighting function ts_headline()
for OR and NOT expressions
(Tom Lane)
§
Add functions to add, subtract, and generate
timestamptz values in a specified time zone (Przemyslaw
Sztoch, Gurjeet Singh)
§
The functions are date_add(),
date_subtract(), and generate_series().
Change date_trunc(unit,
timestamptz, time_zone) to be an immutable
function (Przemyslaw Sztoch)
§
This allows the creation of expression indexes using this function.
Add server variable SYSTEM_USER
(Bertrand Drouvot)
§
This reports the authentication method and its authenticated user.
Add functions array_sample()
and array_shuffle() (Martin Kalcher)
§
Add aggregate function ANY_VALUE()
which returns any value from a set (Vik Fearing)
§
Add function random_normal()
to supply normally-distributed random numbers (Paul Ramsey)
§
Add error function erf()
and its complement erfc() (Dean Rasheed)
§
Improve the accuracy of numeric power()
for integer exponents (Dean Rasheed)
§
Add XMLSERIALIZE()
option INDENT to pretty-print its output
(Jim Jones)
§
Change pg_collation_actual_version()
to return a reasonable value for the default collation (Jeff Davis)
§
Previously it returned NULL.
Allow pg_read_file()
and pg_read_binary_file() to ignore missing
files (Kyotaro Horiguchi)
§
Add byte specification (B) to pg_size_bytes()
(Peter Eisentraut)
§
Allow to_reg*
functions to accept numeric OIDs as input
(Tom Lane)
§
Add the ability to get the current function's OID in PL/pgSQL (Pavel Stehule) §
This is accomplished with GET DIAGNOSTICS
variable = PG_ROUTINE_OID.
Add libpq connection option require_auth
to specify a list of acceptable authentication methods (Jacob
Champion)
§
This can also be used to disallow certain authentication methods.
Allow multiple libpq-specified hosts to be randomly selected (Jelte Fennema) § §
This is enabled with load_balance_hosts=random
and can be used for load balancing.
Add libpq option sslcertmode
to control transmission of the client certificate (Jacob Champion)
§
The option values are disable,
allow, and require.
Allow libpq to use the system certificate pool for certificate verification (Jacob Champion, Thomas Habets) §
This is enabled with sslrootcert=system,
which also enables sslmode=verify-full.
Allow psql to control the maximum width of header lines in expanded format (Platon Pronko) §
This is controlled by xheader_width.
Add psql command \drg
to show role membership details (Pavel Luzanov)
§
§
The Member of output column has been removed
from \du and \dg because
this new command displays this information in more detail.
Allow psql's access privilege commands to show system objects (Nathan Bossart) § §
Add FOREIGN designation
to psql \d+
for foreign table children and partitions (Ian Lawrence Barwick)
§
Prevent \df+
from showing function source code (Isaac Morland)
§
Function bodies are more easily viewed with \sf.
Allow psql to submit queries using the extended query protocol (Peter Eisentraut) §
Passing arguments to such queries is done
using the new psql \bind
command.
Allow psql \watch
to limit the number of executions (Andrey Borodin)
§
The \watch options can now be named when
specified.
Detect invalid values for psql \watch,
and allow zero to specify no delay (Andrey Borodin)
§
Allow psql scripts to obtain the exit status of shell commands and queries (Corey Huinker, Tom Lane) § §
The new psql control variables are SHELL_ERROR
and SHELL_EXIT_CODE.
Various psql tab completion improvements (Vignesh C, Aleksander Alekseev, Dagfinn Ilmari Mannsåker, Shi Yu, Michael Paquier, Ken Kato, Peter Smith) § § § § § § § § § § § §
Add pg_dump control of dumping child tables and partitions (Gilles Darold) §
The new options are --table-and-children,
--exclude-table-and-children, and
--exclude-table-data-and-children.
Add LZ4 and Zstandard compression to pg_dump (Georgios Kokolatos, Justin Pryzby)
Allow pg_dump and pg_basebackup
to use long mode for compression (Justin Pryzby)
§
§
§
§
Improve pg_dump to accept a more consistent compression syntax (Georgios Kokolatos) §
Options like --compress=gzip:5.
Add initdb option to set server variables for the duration of initdb and all future server starts (Tom Lane) §
The option is -c name=value.
Add options to createuser to control more user options (Shinya Kato) § §
Specifically, the new options control the valid-until date, bypassing of row-level security, and role membership.
Deprecate createuser
option --role (Nathan Bossart)
§
§
This option could be easily confused with new
createuser role membership options,
so option --member-of has been added with the
same functionality. The --role option can still
be used.
Allow control of vacuumdb schema processing (Gilles Darold) §
These are controlled by options --schema and
--exclude-schema.
Use new VACUUM
options to improve the performance of vacuumdb
(Tom Lane, Nathan Bossart)
§
Have pg_upgrade set the new cluster's locale and encoding (Jeff Davis) §
This removes the requirement that the new cluster be created with the same locale and encoding settings.
Add pg_upgrade option to specify the default transfer mode (Peter Eisentraut) §
The option is --copy.
Improve pg_basebackup to accept numeric compression options (Georgios Kokolatos, Michael Paquier) §
Options like --compress=server-5 are now supported.
Fix pg_basebackup
to handle tablespaces stored in the PGDATA directory
(Robert Haas)
§
Add pg_waldump
option --save-fullpage to dump full page images
(David Christensen)
§
Allow pg_waldump
options -t/--timeline to accept
hexadecimal values (Peter Eisentraut)
§
Add support for progress reporting to pg_verifybackup (Masahiko Sawada) §
Allow pg_rewind to properly track timeline changes (Heikki Linnakangas) § §
Previously if pg_rewind was run after a timeline switch but before a checkpoint was issued, it might incorrectly determine that a rewind was unnecessary.
Have pg_receivewal
and pg_recvlogical
cleanly exit on SIGTERM (Christoph Berg)
§
This signal is often used by systemd.
Build ICU support by default (Jeff Davis) §
This removes build
flag --with-icu and adds flag
--without-icu.
Add support for SSE2 (Streaming SIMD Extensions 2) vector operations on x86-64 architectures (John Naylor) §
Add support for Advanced SIMD (Single Instruction Multiple Data) (NEON) instructions on ARM architectures (Nathan Bossart) §
Have Windows
binaries built with MSVC use
RandomizedBaseAddress (ASLR)
(Michael Paquier)
§
This was already enabled on MinGW builds.
Prevent extension libraries from exporting their symbols by default (Andres Freund, Tom Lane) § §
Functions that need to be called from the core backend
or other extensions must now be explicitly marked
PGDLLEXPORT.
Require Windows 10 or newer versions (Michael Paquier, Juan José Santamaría Flecha) §
Previously Windows Vista and Windows XP were supported.
Require Perl version 5.14 or later (John Naylor) §
Require Bison version 2.3 or later (John Naylor) §
Require Flex version 2.5.35 or later (John Naylor) §
Require MIT Kerberos for GSSAPI support (Stephen Frost) §
Remove support for Visual Studio 2013 (Michael Paquier) §
Remove support for HP-UX (Thomas Munro) §
Remove support for HP/Intel Itanium (Thomas Munro) §
Remove support for M68K, M88K, M32R, and SuperH CPU architectures (Thomas Munro) § §
Remove libpq support for SCM credential authentication (Michael Paquier) §
Backend support for this authentication method was removed in PostgresSQL 9.1.
Add meson build system (Andres Freund, Nazir Bilal Yavuz, Peter Eisentraut) §
This eventually will replace the Autoconf and Windows-based MSVC build systems.
Allow control of the location of the openssl binary used by the build system (Peter Eisentraut) §
Make finding openssl program a configure or meson option
Add build option to allow testing of small table segment sizes (Andres Freund) §
The build options are --with-segsize-blocks
and -Dsegsize_blocks.
Add pgindent options (Andrew Dunstan) § § § § § § §
The new options are --show-diff,
--silent-diff, --commit,
and --help, and allow multiple
--exclude options. Also require the typedef file
to be explicitly specified. Options --code-base
and --build were also removed.
Add pg_bsd_indent source code to the main tree (Tom Lane) §
Improve make_ctags and make_etags (Yugo Nagata) §
Adjust pg_attribute
columns for efficiency (Peter Eisentraut)
§
Improve use of extension-based indexes on boolean columns (Zongliang Quan, Tom Lane) §
Add support for Daitch-Mokotoff Soundex to fuzzystrmatch (Dag Lem) §
Allow auto_explain to log values passed to parameterized statements (Dagfinn Ilmari Mannsåker) §
This affects queries using server-side PREPARE/EXECUTE
and client-side parse/bind. Logging is controlled by auto_explain.log_parameter_max_length;
by default query parameters will be logged with no length
restriction.
Have auto_explain's
log_verbose mode honor the value of compute_query_id
(Atsushi Torikoshi)
§
Previously even if
compute_query_id was enabled, log_verbose
was not showing the query identifier.
Change the maximum length of ltree labels from 256 to 1000 and allow hyphens (Garen Torikian) §
Have pg_stat_statements
normalize constants used in utility commands (Michael Paquier)
§
Previously constants appeared instead of placeholders, e.g.,
$1.
Add pg_walinspect
function pg_get_wal_block_info()
to report WAL block information (Michael Paquier,
Melanie Plageman, Bharath Rupireddy)
§
§
§
§
Change how pg_walinspect
functions pg_get_wal_records_info()
and pg_get_wal_stats()
interpret ending LSNs (Bharath Rupireddy)
§
Previously ending LSNs which represent nonexistent WAL locations would generate an error, while they will now be interpreted as the end of the WAL.
Add detailed descriptions of WAL records in pg_walinspect and pg_waldump (Melanie Plageman, Peter Geoghegan) § § § §
Add pageinspect
function bt_multi_page_stats()
to report statistics on multiple pages (Hamid Akhtar)
§
This is similar to bt_page_stats() except it
can report on a range of pages.
Add empty range output column to pageinspect
function brin_page_items()
(Tomas Vondra)
§
Redesign archive modules to be more flexible (Nathan Bossart) §
Initialization changes will require modules written for older versions of Postgres to be updated.
Correct inaccurate pg_stat_statements row tracking extended query protocol statements (Sami Imseih) §
Add pg_buffercache
function pg_buffercache_usage_counts() to
report usage totals (Nathan Bossart)
§
Add pg_buffercache
function pg_buffercache_summary() to report
summarized buffer statistics (Melih Mutlu)
§
Allow the schemas of required extensions to be
referenced in extension scripts using the new syntax
@extschema:referenced_extension_name@
(Regina Obe)
§
Allow required extensions to
be marked as non-relocatable using no_relocate
(Regina Obe)
§
This allows @extschema:referenced_extension_name@
to be treated as a constant for the lifetime of the extension.
Allow postgres_fdw to do aborts in parallel (Etsuro Fujita) §
This is enabled with
postgres_fdw option parallel_abort.
Make ANALYZE
on foreign postgres_fdw tables more
efficient (Tomas Vondra)
§
The postgres_fdw option analyze_sampling
controls the sampling method.
Restrict shipment of reg* type constants
in postgres_fdw to those referencing
built-in objects or extensions marked as shippable (Tom Lane)
§
Have postgres_fdw and dblink handle interrupts during connection establishment (Andres Freund) §
The following individuals (in alphabetical order) have contributed to this release as patch authors, committers, reviewers, testers, or reporters of issues.
| Abhijit Menon-Sen |
| Adam Mackler |
| Adrian Klaver |
| Ahsan Hadi |
| Ajin Cherian |
| Ajit Awekar |
| Alan Hodgson |
| Aleksander Alekseev |
| Alex Denman |
| Alex Kozhemyakin |
| Alexander Korolev |
| Alexander Korotkov |
| Alexander Lakhin |
| Alexander Pyhalov |
| Alexey Borzov |
| Alexey Ermakov |
| Alexey Makhmutov |
| Álvaro Herrera |
| Amit Kapila |
| Amit Khandekar |
| Amit Langote |
| Amul Sul |
| Anastasia Lubennikova |
| Anban Company |
| Andreas Dijkman |
| Andreas Karlsson |
| Andreas Scherbaum |
| Andrei Zubkov |
| Andres Freund |
| Andrew Alsup |
| Andrew Bille |
| Andrew Dunstan |
| Andrew Gierth |
| Andrew Kesper |
| Andrey Borodin |
| Andrey Lepikhov |
| Andrey Sokolov |
| Ankit Kumar Pandey |
| Ante Kresic |
| Anton Melnikov |
| Anton Sidyakin |
| Anton Voloshin |
| Antonin Houska |
| Arne Roland |
| Artem Anisimov |
| Arthur Zakirov |
| Ashutosh Bapat |
| Ashutosh Sharma |
| Asim Praveen |
| Atsushi Torikoshi |
| Ayaki Tachikake |
| Balazs Szilfai |
| Benoit Lobréau |
| Bernd Helmle |
| Bertrand Drouvot |
| Bharath Rupireddy |
| Bilva Sanaba |
| Bob Krier |
| Boris Zentner |
| Brad Nicholson |
| Brar Piening |
| Bruce Momjian |
| Bruno da Silva |
| Carl Sopchak |
| Cary Huang |
| Changhong Fei |
| Chris Travers |
| Christoph Berg |
| Christophe Pettus |
| Corey Huinker |
| Craig Ringer |
| Curt Kolovson |
| Dag Lem |
| Dagfinn Ilmari Mannsåker |
| Daniel Gustafsson |
| Daniel Vérité |
| Daniel Watzinger |
| Daniel Westermann |
| Daniele Varrazzo |
| Daniil Anisimov |
| Danny Shemesh |
| Dave Page |
| David Christensen |
| David G. Johnston |
| David Geier |
| David Gilman |
| David Kimura |
| David Rowley |
| David Steele |
| David Turon |
| David Zhang |
| Davinder Singh |
| Dean Rasheed |
| Denis Laxalde |
| Dilip Kumar |
| Dimos Stamatakis |
| Dmitriy Kuzmin |
| Dmitry Astapov |
| Dmitry Dolgov |
| Dmitry Koval |
| Dong Wook Lee |
| Dongming Liu |
| Drew DeVault |
| Duncan Sands |
| Ed Maste |
| Egor Chindyaskin |
| Ekaterina Kiryanova |
| Elena Indrupskaya |
| Emmanuel Quincerot |
| Eric Mutta |
| Erik Rijkers |
| Erki Eessaar |
| Erwin Brandstetter |
| Etsuro Fujita |
| Eugeny Zhuzhnev |
| Euler Taveira |
| Evan Jones |
| Evgeny Morozov |
| Fabrízio de Royes Mello |
| Farias de Oliveira |
| Florin Irion |
| Franz-Josef Färber |
| Garen Torikian |
| Georgios Kokolatos |
| Gilles Darold |
| Greg Stark |
| Guillaume Lelarge |
| Gunnar Bluth |
| Gunnar Morling |
| Gurjeet Singh |
| Haiyang Wang |
| Haiying Tang |
| Hamid Akhtar |
| Hans Buschmann |
| Hao Wu |
| Hayato Kuroda |
| Heath Lord |
| Heikki Linnakangas |
| Himanshu Upadhyaya |
| Hisahiro Kauchi |
| Hongyu Song |
| Hubert Lubaczewski |
| Hung Nguyen |
| Ian Barwick |
| Ibrar Ahmed |
| Ilya Gladyshev |
| Ilya Nenashev |
| Isaac Morland |
| Israel Barth Rubio |
| Jacob Champion |
| Jacob Speidel |
| Jaime Casanova |
| Jakub Wartak |
| James Coleman |
| James Inform |
| James Vanns |
| Jan Wieck |
| Japin Li |
| Jeevan Ladhe |
| Jeff Davis |
| Jeff Janes |
| Jehan-Guillaume de Rorthais |
| Jelte Fennema |
| Jian He |
| Jim Jones |
| Jinbao Chen |
| Joe Conway |
| Joel Jacobson |
| John Naylor |
| Jonathan Katz |
| Josef Simanek |
| Joseph Koshakow |
| Juan José Santamaría Flecha |
| Julien Rouhaud |
| Julien Roze |
| Junwang Zhao |
| Justin Pryzby |
| Justin Zhang |
| Karina Litskevich |
| Karl O. Pinc |
| Keisuke Kuroda |
| Ken Kato |
| Kevin McKibbin |
| Kieran McCusker |
| Kirk Wolak |
| Konstantin Knizhnik |
| Koshi Shibagaki |
| Kotaro Kawamoto |
| Kui Liu |
| Kyotaro Horiguchi |
| Lakshmi Narayanan Sreethar |
| Laurence Parry |
| Laurenz Albe |
| Luca Ferrari |
| Lukas Fittl |
| Maciek Sakrejda |
| Magnus Hagander |
| Maja Zaloznik |
| Marcel Hofstetter |
| Marina Polyakova |
| Mark Dilger |
| Marko Tiikkaja |
| Markus Winand |
| Martijn van Oosterhout |
| Martin Jurca |
| Martin Kalcher |
| Mary Xu |
| Masahiko Sawada |
| Masahiro Ikeda |
| Masao Fujii |
| Mason Sharp |
| Matheus Alcantara |
| Mats Kindahl |
| Matthias van de Meent |
| Matthijs van der Vleuten |
| Maxim Orlov |
| Maxim Yablokov |
| Mehmet Emin Karakas |
| Melanie Plageman |
| Melih Mutlu |
| Micah Gates |
| Michael Banck |
| Michael Paquier |
| Michail Nikolaev |
| Michel Pelletier |
| Mike Oh |
| Mikhail Gribkov |
| Mingli Zhang |
| Miroslav Bendik |
| Mitsuru Hinata |
| Myo Wai Thant |
| Naeem Akhter |
| Naoki Okano |
| Nathan Bossart |
| Nazir Bilal Yavuz |
| Neha Sharma |
| Nick Babadzhanian |
| Nicola Contu |
| Nikhil Shetty |
| Nikita Glukhov |
| Nikolay Samokhvalov |
| Nikolay Shaplov |
| Nishant Sharma |
| Nitin Jadhav |
| Noah Misch |
| Noboru Saito |
| Noriyoshi Shinoda |
| Nuko Yokohama |
| Oleg Bartunov |
| Oleg Tselebrovskiy |
| Olly Betts |
| Onder Kalaci |
| Onur Tirtir |
| Pablo Federico |
| Palle Girgensohn |
| Paul Guo |
| Paul Jungwirth |
| Paul Ramsey |
| Pavel Borisov |
| Pavel Kulakov |
| Pavel Luzanov |
| Pavel Stehule |
| Peifeng Qiu |
| Peter Eisentraut |
| Peter Geoghegan |
| Peter Smith |
| Phil Florent |
| Philippe Godfrin |
| Platon Pronko |
| Przemyslaw Sztoch |
| Rachel Heaton |
| Ranier Vilela |
| Regina Obe |
| Reid Thompson |
| Reiner Peterke |
| Richard Guo |
| Riivo Kolka |
| Rishu Bagga |
| Robert Haas |
| Robert Sjöblom |
| Robert Treat |
| Roberto Mello |
| Robins Tharakan |
| Roman Zharkov |
| Ronan Dunklau |
| Rushabh Lathia |
| Ryo Matsumura |
| Samay Sharma |
| Sami Imseih |
| Sandeep Thakkar |
| Sandro Santilli |
| Sebastien Flaesch |
| Sébastien Lardière |
| Sehrope Sarkuni |
| Sergey Belyashov |
| Sergey Pankov |
| Sergey Shinderuk |
| Shi Yu |
| Shinya Kato |
| Sho Kato |
| Shruthi Gowda |
| Shveta Mallik |
| Simon Riggs |
| Sindy Senorita |
| Sirisha Chamarthi |
| Sravan Kumar |
| Stéphane Tachoires |
| Stephen Frost |
| Steve Chavez |
| Stone Tickle |
| Sven Klemm |
| Takamichi Osumi |
| Takeshi Ideriha |
| Tatsuhiro Nakamori |
| Tatsuo Ishii |
| Teja Mupparti |
| Tender Wang |
| Teodor Sigaev |
| Thiago Nunes |
| Thom Brown |
| Thomas Habets |
| Thomas Mc Kay |
| Thomas Munro |
| Tim Carey-Smith |
| Tim Field |
| Timo Stolz |
| Tom Lane |
| Tomas Vondra |
| Tor Erik Linnerud |
| Torsten Förtsch |
| Tristan Partin |
| Troy Frericks |
| Tushar Ahuja |
| Valerie Woolard |
| Vibhor Kumar |
| Victor Spirin |
| Victoria Shepard |
| Vignesh C |
| Vik Fearing |
| Vitaly Burovoy |
| Vitaly Davydov |
| Wang Wei |
| Wenjing Zeng |
| Whale Song |
| Will Mortensen |
| Wolfgang Walther |
| Xin Wen |
| Xing Guo |
| Xingwang Xu |
| XueJing Zhao |
| Yanliang Lei |
| Youmiu Mo |
| Yugo Nagata |
| Yura Sokolov |
| Yuta Katsuragi |
| Zhen Mingyang |
| Zheng Li |
| Zhihong Yu |
| Zhijie Hou |
| Zongliang Quan |
| Zuming Jiang |