Release date: AS OF 2022-06-11
PostgreSQL 15 contains many new features and enhancements, including:
The above items and other new features of PostgreSQL 15 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 15 contains a number of changes that may affect compatibility with previous releases. Observe the following incompatibilities:
Remove PUBLIC
creation permission on the public
schema
(Noah Misch)
This is a change in the default for newly-created databases in
existing clusters and for new clusters; USAGE
permissions on the public
schema has not
been changed. Databases restored from previous Postgres releases
will be restored with their current permissions. Users wishing
to have the old permissions on new objects will need to grant
CREATE
permission for PUBLIC
on the public
schema; this change can be made
on template1
to cause all new databases
to have these permissions. template1
permissions for pg_dumpall and
pg_upgrade?
Change the owner of the public
schema to
pg_database_owner
(Noah Misch)
Previously it was the literal user name of the database owner. Databases restored from previous Postgres releases will be restored with their current owner specification.
Remove long-deprecated exclusive backup mode (David Steele, Nathan Bossart)
If the database server stops abruptly while in this mode, the
server could fail to start. The non-exclusive backup mode requires
a continuous database connection during the backup. Functions
pg_start_backup()
/pg_stop_backup()
have been renamed to
pg_backup_start()
/pg_backup_stop()
,
and the functions pg_backup_start_time()
and pg_is_in_backup()
have been removed.
Increase hash_mem_multiplier
default to 2.0 (Peter Geoghegan)
This allows query hash operations to use double the amount of
work_mem
memory as other operations.
Remove server-side language plpython2u
and generic
Python language plpythonu
(Andres Freund)
Mark the interval
output
function as stable, not immutable, since it depends on IntervalStyle
(Tom Lane)
This will cause the creation of indexes relying on the text output
of interval
values to fail.
Generate an error if array_to_tsvector()
is passed an empty array element (Jean-Christophe Arnu)
This is prohibited because lexemes should never be empty. Users of previous Postgres releases should verify that no empty lexemes are stored because they can lead to dump/restore failures and inconsistent results.
Generate an error when chr()
is supplied with a negative argument (Peter Eisentraut)
Prevent Unicode zero-length identifiers, e.g., U&"" (Peter Eisentraut)
Non-Unicode zero-length identifiers were already prevented.
Remove pg_dump's
--no-synchronized-snapshots
option since all
supported server versions support synchronized snapshots (Tom Lane)
Prevent CREATE OR REPLACE
VIEW
from changing the collation of an output column
(Tom Lane)
Prevent numeric literals from having non-numeric trailing characters (Peter Eisentraut)
Previously literals like 123abc
would be
interpreted as 123
and abc
.
Adjust JSON numeric literal processing to match the SQL/JSON-standard (Peter Eisentraut)
This accepts numeric formats like .1
and
1.
, and disallows trailing junk after numeric
literals, like 1.type()
.
Improve consistency of interval parsing with trailing periods (Tom Lane)
Some platforms disallowed trailing periods.
When specifying fractional interval values in units greater than months, round to the nearest month (Bruce Momjian)
For example, report 1.99 years
as 2
years
, not 1 year 11 months
.
Detect integer overflow in interval justification functions (Joe Koshakow)
Specifically, functions justify_interval()
,
justify_hours()
, and
justify_days()
are affected.
Remove the default ADMIN
OPTION
privilege a login role has on its own role
membership (Robert Haas)
Previously, login roles could add/remove members of its own role,
even without ADMIN OPTION
privilege.
Allow logical replication to run as the owner of the subscription (Mark Dilger)
Because row-level security policies are not checked, only superusers,
roles with bypassrls
, and table owners can
replicate into tables with row-level security policies.
Prevent UPDATE
and DELETE
logical replication
operations on tables where the subscription owner does not have
SELECT
permission on the table (Jeff Davis)
UPDATE
and DELETE
perform
SELECT
, so require the subscription owner to
have table SELECT
permission.
When EXPLAIN
references the temporary object schema, refer to it as
pg_temp
(Amul Sul)
Previously the actual schema name was used.
Modify SPI's
SPI_commit()
and
SPI_commit_and_chain()
to automatically start
a new transaction at completion (Peter Eisentraut, Tom Lane)
BACKPATCHED?
Fix pg_statio_all_tables
to sum values for the rare case of TOAST tables
with multiple indexes (Andrei Zubkov)
Previously such cases would have one row for each index.
Disallow setting of server variables matching the prefixes of installed extension (Florin Irion, Tom Lane)
This also deletes any matching server variables during extension load.
Remove unnecessary server variable
stats_temp_directory
(Andres Freund, Kyotaro
Horiguchi)
Improve the algorithm used to compute random()
(Fabien Coelho)
This will cause random()
to differ from what
was emitted by prior versions for the same seed values.
Reduce casting of constants in postgres_fdw queries (Dian Fay)
If column types were mismatched between local and remote databases, such casting could cause errors.
Remove xml2's function
xml_is_well_formed()
(Tom Lane)
This function has been implemented in the core backend since Postgres 9.1.
Allow custom scan provders to indicate if they support projections (Sven Klemm)
The default is now that custom scan providers can't support projections, so they need to be updated for this release.
Below you will find a detailed account of the changes between PostgreSQL 15 and the previous major release.
Record and check the collation of each database (Peter Eisentraut)
This is designed to detect collation
mismatches to avoid data corruption. Function
pg_database_collation_actual_version()
reports the underlying operating system collation version, and
ALTER DATABASE ... REFRESH
sets the database
to match the operating system collation version. DETAILS?
Allow ICU collations to be set as the default for clusters and databases (Peter Eisentraut)
Previously, ICU collations could only be
specified in CREATE
COLLATION
and used with the
COLLATE
clause.
Add system view pg_ident_file_mappings
to report pg_ident.conf
information (Julien
Rouhaud)
Improve planning time for queries referencing partitioned tables (David Rowley)
Specifically this helps if only a small number of the many partitions are relevant.
Allow ordered scans of partitions to avoid sorting in more cases (David Rowley)
Previously, a partitioned table with a DEFAULT
partition or a LIST
partition containing
multiple values could not be used for ordered partition scans.
Now they can be used if these partitions are pruned.
Improve foreign key behavior of updates on partitioned tables that move rows between partitions (Amit Langote)
Previously, such updates ran delete actions on the source partition and insert actions on the target partition. PostgreSQL will now run update actions on the referenced partition root.
Allow CLUSTER
on partitioned tables (Justin Pryzby)
Fix ALTER TRIGGER
RENAME
on partitioned tables to properly rename
triggers an all partitions (Arne Roland, Álvaro Herrera)
Also prohibit cloned triggers from being renamed.
Enable system and TOAST btree indexes to efficiently store duplicates (Peter Geoghegan)
Previously de-duplication was disabled for these types of indexes.
Improve lookup performance of GiST indexes built using sorting (Aliaksandr Kalenik, Sergei Shoulbakov, Andrey Borodin)
Prevent changes to columns only indexed by BRIN indexes from disabling HOT updates (Josef Simanek)
Allow unique constraints and indexes to treat
NULL
values as not distinct (Peter Eisentraut)
Previously NULL
values were always indexed
as distinct values, but this can now be changed by creating
constraints and indexes using UNIQUE NULLS NOT
DISTINCT
.
Allow ^@
and starts_with()
to use btree indexes if
using a C collation (Tom Lane)
Previously these could only use SP-GiST indexes.
Allow extended statistics to record statistics for a parent with all its children (Tomas Vondra, Justin Pryzby)
Regular statistics already tracked parent and parent/all-children statistics separately.
Allow GROUP
BY
sorting to optimize column order (Dmitry
Dolgov, Teodor Sigaev, Tomas Vondra)
This optimization can be disabled using the server variable enable_group_by_reordering
.
Add server variable recursive_worktable_factor
to allow the user to specify the expected recursive query worktable
size (Simon Riggs)
WHAT IS A WORKTABLE? NOT DEFINED.
Allow hash lookup for NOT IN
clauses with many constants (David Rowley, James Coleman)
Previously the code always sequentially scanned the list of values.
Improve validation of UTF-8 text (even if only ASCII) by processing 16 bytes at a time (John Naylor, Heikki Linnakangas)
This will improve text-heavy operations like COPY FROM
.
Improve performance for sorts that exceed work_mem
(Heikki Linnakangas)
Specifically, switch to a batch sorting algorithm that uses more output streams internally.
Improve performance and reduce memory consumption of in-memory sorts (Ronan Dunklau, David Rowley, Thomas Munro, John Naylor)
Allow WAL full page writes to use LZ4 and Zstandard compression (Andrey Borodin, Justin Pryzby)
This is controlled by the wal_compression
server setting.
Add direct I/O support to macOS (Thomas Munro)
This only works if max_wal_senders=0
and wal_level=minimal
, and only for
WAL.
Allow vacuum to be more aggressive in setting the oldest frozenxid (Peter Geoghegan)
Allow a query referencing multiple foreign tables to perform parallel foreign table scans in more cases (Andrey Lepikhov, Etsuro Fujita)
Improve the performance of window
functions that use row_number()
,
rank()
, and count()
(David Rowley)
Improve the performance of spinlocks on high-core-count ARM64 systems (Geoffrey Blake)
Enable default logging of checkpoints and slow autovacuum operations (Bharath Rupireddy)
Specifically, this changes the default of log_checkpoints
to on and log_autovacuum_min_duration
to 10 minutes. This will cause idle servers to generate log
output, which might cause problems on resource-constrained
servers with insufficient log file removal. The defaults should
be changed in such cases.
Generate periodic log message during slow server starts (Nitin Jadhav, Robert Haas)
Messages report the cause of the delay. The time interval for
notification is controlled by the new server variable log_startup_progress_interval
.
Store server-level statistics in shared memory (Kyotaro Horiguchi, Andres Freund, Melanie Plageman)
Previously this was updated via UDP packets, stored in the file system, and read by sessions. There is no longer a statistics collector process.
Add additional information to VACUUM VERBOSE
and autovacuum logging messages (Peter Geoghegan)
Add EXPLAIN
(BUFFERS)
output for temporary file block I/O
(Masahiko Sawada)
Allow log output in JSON format (Sehrope Sarkuni, Michael Paquier)
The new setting is log_destination=jsonlog
.
Allow pg_stat_reset_single_table_counters()
to reset the counters of relations shared across all databases
(B Sadhu, Prasad Patro)
Add wait events for local shell commands (Fujii Masao)
Specifically the new wait events are related to
commands archive_command
,
archive_cleanup_command
,
restore_command
and
recovery_end_command
.
Allow view access to be controlled by privileges of the view user (Christoph Heiss)
Previously, view access could only be based on the view owner.
Allow members of the pg_write_server_files
predefined role to perform server-side base backups (Dagfinn
Ilmari Mannsåker)
Previously only the superusers could perform such backups.
Allow GRANT
to assign permission to change server variables via
SET
and ALTER SYSTEM
(Mark Dilger)
New function has_parameter_privilege()
reports on this privilege.
Add predefined role pg_checkpointer
that allows members to run CHECKPOINT
(Jeff Davis)
Previously checkpoints could only be run by superusers.
Allow members of the pg_read_all_stats
predefined role to access the views pg_backend_memory_contexts
and pg_shmem_allocations
(Bharath Rupireddy)
Previously these views could only be accessed by superusers.
Allow GRANT
to assign permissions on pg_log_backend_memory_contexts()
(Jeff Davis)
Previously this function could only be run by superusers.
Add server variable shared_memory_size
to report the size of allocated shared memory (Nathan Bossart)
Add server variable shared_memory_size_in_huge_pages
to report the number of huge memory pages required (Nathan Bossart)
This is only supported on Linux.
Allow postgres
-C
to properly report runtime-computed values
(Nathan Bossart)
Previously runtime-computed values data_checksums
,
wal_segment_size
,
and data_directory_mode
would report values that would not be accurate on the running
server. However, this does not work on a running server.
Add support for LZ4 and Zstandard compression of server-side base backups (Jeevan Ladhe, Robert Haas)
Run checkpointer and bgwriter during crash recovery (Thomas Munro)
Allow WAL processing to pre-fetch needed file contents (Thomas Munro)
This is controlled by the server variable recovery_prefetch
.
Add server variable archive_library
to specify the library to be called for archiving (Nathan Bossart)
Previously only shell commands could be called to perform archiving.
No longer require IDENTIFY_SYSTEM
to be run before START_REPLICATION
(Jeff Davis)
Allow publication of all tables in a schema (Vignesh C, Hou Zhijie, Amit Kapila)
For example, this syntax is now supported: CREATE PUBLICATION pub1
FOR ALL TABLES IN SCHEMA s1,s2;
ALTER
PUBLICATION
supports a similar syntax. Tables added
to the listed schemas in the future will also be replicated.
Allow publication content to be filtered using a
WHERE
clause (Hou Zhijie, Euler Taveira,
Peter Smith, Ajin Cherian, Tomas Vondra, Amit Kapila)
Allow publications to be restricted to specific columns (Tomas Vondra, Álvaro Herrera, Rahila Syed)
Allow skipping of transactions on a subscriber using ALTER SUBSCRIPTION
... SKIP
(Masahiko Sawada)
Add support for prepared transactions to built-in logical replication (Peter Smith, Ajin Cherian, Amit Kapila, Nikhil Sontakke, Stas Kelvich)
Add two-phase information to the logical replication stream (Ajin Cherian)
The new CREATE_REPLICATION_SLOT
option is called TWO_PHASE
.
pg_recvlogical now supports a new
--two-phase
option during slot creation.
Prevent logical replication of empty transactions (Ajin Cherian, Hou Zhijie, Euler Taveira)
Previously, write transactions would send empty transactions to subscribers if subscribed tables were not modified.
Add SQL functions to monitor the directory contents of logical replication slots (Bharath Rupireddy)
Specifically, the functions are pg_ls_logicalsnapdir()
,
pg_ls_logicalmapdir()
, and
pg_ls_replslotdir()
. They can be run by
members of the predefined pg_monitor
role.
Allow subscribers to stop logical replication application on error (Osumi Takamichi, Mark Dilger)
This is enabled with the subscriber option disable_on_error
and avoids possible infinite error loops during stream application.
Adjust subscriber server variables to match the publisher so datetime and float8 values are interpreted consistently (Japin Li)
Some publishers might be relying on inconsistent behavior.
Add system view pg_stat_subscription_stats
to report on subscriber activity (Masahiko Sawada)
New function pg_stat_reset_subscription_stats()
allows the resetting of subscriber statistics.
Remove incorrect duplicate partitions in system view pg_publication_tables
(Hou Zhijie)
Add SQL MERGE
command to
adjust one table to match another (Simon Riggs, Pavan Deolasee,
Álvaro Herrera, Amit Langote)
This is similar to INSERT ... ON CONFLICT
but more batch-oriented.
Add support for HEADER
option in COPY
text format
(Rémi Lapeyre)
The new option causes the column names to be output, and optionally verified on input.
Add new default WAL-logged method for database creation (Dilip Kumar)
This avoids the need for checkpoints during database creation; the old method is still available.
Allow CREATE
DATABASE
to set the database OID
(Shruthi KC, Antonin Houska)
Prevent DROP
DATABASE
, DROP
TABLESPACE
, and ALTER DATABASE SET
TABLESPACE
from occasionally failing during
concurrent use on Windows (Thomas Munro)
Allow foreign key ON
DELETE SET
actions to affect only specified columns
(Paul Martinez)
Previously, all of the columns in the foreign key were always affected.
Allow ALTER
TABLE
to modify a table's ACCESS
METHOD
(Justin Pryzby, Jeff Davis)
Properly call object access hooks when ALTER TABLE
causes table rewrites (Michael Paquier)
Allow numeric
scale to be negative or greater than precision (Dean Rasheed,
Tom Lane)
This allows rounding of values to the left of the decimal point,
e.g., '1234'::numeric(4, -2)
returns 1200.
Improve overflow detection when casting values to interval (Joe Koshakow)
Allow the creation of unlogged sequences (Peter Eisentraut)
Update the display width information of modern Unicode characters, like emojis (Jacob Champion)
Also update from Unicode 5.0 to 14.0.0. There is now an automated way to keep Postgres updated with Unicode releases.
Add multirange input to range_agg()
(Paul Jungwirth)
Add MIN()
and MAX()
aggregates for the xid8
data type (Ken Kato)
Add regular expression functions for compatibility with other relational systems (Gilles Darold, Tom Lane)
Specifically, the new functions are regexp_count()
,
regexp_instr()
,
regexp_like()
, and
regexp_substr()
. Some new optional arguments
were also added to regexp_replace()
.
Add the ability to compute the distance between polygons
(Tom Lane)
Add to_char()
format codes of
, tzh
, and
tzm
format codes (Nitin Jadhav)
The upper-case versions of these were already supported.
Improve the optimization of timetz_zone()
by
stabilizing its value at transaction start (Aleksander Alekseev,
Tom Lane)
HOW IS THIS USED?
Allow tsvector_delete_arr()
and
tsvector_setweight_by_filter()
to accept
empty array elements (Jean-Christophe Arnu)
These lexemes are not stored so the acceptance of empty array elements is not a problem. NOT DOCUMENTED, USER API?
Add support for petabyte units to pg_size_pretty()
and pg_size_bytes()
(David Christensen)
Change pg_event_trigger_ddl_commands()
to output references to non-local temporary schemas using the
actual schema name (Tom Lane)
Previously this function referred to temporary schemas as
pg_temp
.
Add SQL/JSON-standard JSON constructors (Nikita Glukhov)
The construction functions are json()
,
json_scalar()
, and
json_serialize()
,
json_array()
,
json_arrayagg()
,
json_object()
, and
json_objectagg()
. They have a few functional
advantages over the existing JSON functions.
Add SQL/JSON
query functions json_exists()
,
json_query()
, and
json_value()
(Nikita Glukhov)
Add JSON predicates to test
JSON
/JSONB
values (Nikita Glukhov)
The clauses are IS
JSON
[ VALUE
|
ARRAY
| OBJECT
| SCALAR
|
[WITH
| WITHOUT
]
UNIQUE KEYS
].
Add function JSON_TABLE()
to cause JSON data to be treated as a table
(Nikita Glukhov)
Fix enforcement of PL/pgSQL variable CONSTANT
markings (Tom Lane)
Previously, a variable used as a CALL
output parameter or refcursor OPEN
variable
would not enforce CONSTANT
.
Allow IP address matching against a server certificate's Subject Alternative Name (Jacob Champion)
Allow PQsslAttribute()
to report the
SSL library type without requiring a libpq
connection (Jacob Champion)
Change query cancellations sent by the client to use the same TCP settings as normal client connections (Jelte Fennema)
This allows configured TCP timeouts to apply to query cancel connections.
Prevent libpq event callback failures from forcing an error result (Tom Lane)
On Unix platforms, have client applications like psql
check HOME
environment variable for the user's
home directory before checking the operating system definition
(Anders Kaseorg)
Improve performance of psql's \copy command (Heikki Linnakangas)
Add psql command \getenv to assign the value of an environment variable to a psql variable (Tom Lane)
Add '+' option to psql's
\lo_list
/\dl
to show object
privileges (Pavel Luzanov)
Add psql \dconfig to report server variables (Mark Dilger, Tom Lane)
This is similar to the server-side SHOW
command but can process patterns.
Add pager option for psql's \watch command (Pavel Stehule, Thomas Munro)
This is only supported on Unix, and is controlled by
PSQL_WATCH_PAGER
.
Have psql send intra-query double-hyphen comments to the server (Tom Lane, Greg Nancarrow)
Previously such comments were removed from the query before being sent. Double-hyphen comments that are before query text are not sent, and are not recorded as separate psql history entries.
Adjust psql's readline meta-# to insert a double-hyphen comment marker (Tom Lane)
Previously an unhelpful pound marker was inserted.
Have psql output all results if multiple queries are passed to the server at once (Fabien Coelho)
This can be disabled by setting SHOW_ALL_RESULTS
.
Improve psql's tab completion (Shinya Kato, Dagfinn Ilmari Mannsåker, Peter Smith, Koyu Tanigawa, Ken Kato, David Fetter, Haiying Tang, Peter Eisentraut, Álvaro Herrera, Tom Lane, Masahiko Sawada)
Limit support of psql to servers running PostgreSQL 9.2 and later (Tom Lane)
Add new pg_basebackup
option --target
to control the base backup location
(Robert Haas)
New output options are server
to write the
backup locally and blackhole
to discard the
backup (for testing).
Allow pg_basebackup to use LZ4 and Zstandard compression on server-side base backup files (Dipesh Pandit, Jeevan Ladhe)
Allow pg_basebackup's
--compress
option to control the compression
method and options (Michael Paquier, Robert Haas)
New options include server-gzip
(gzip
on the server), client-gzip
(same as
gzip
).
Allow pg_basebackup to compress on the server side and decompress on the client side before storage (Dipesh Pandit)
This is accomplished by specifying compression on the server side and plain output format.
Add the LZ4 compression method to pg_receivewal (Georgios Kokolatos)
This is enabled via --compress=lz4
and requires
binaries to be built using --with-lz4
.
Add additional capabilities to
pg_receivewal's
--compress
option (Georgios Kokolatos)
Improve pg_receivewal's ability to restart at the proper WAL location (Ronan Dunklau)
Previously, pg_receivewal would start based on the WAL file stored in the local archive directory, or at the sending server's current WAL flush location. With this change, if the sending server is running Postgres 15 or later, the local archive directory is empty, and a replication slot is specified, the replication slot's restart point will be used.
Add pg_rewind option
--config-file
to simplify use when server
configuration files are stored outside the data directory (Gunnar
Bluth)
Allow pgbench to retry after serialization and deadlock failures (Yugo Nagata, Marina Polyakova)
Have pg_dump dump
public
schema ownership changes and security
labels (Noah Misch)
It also dumps public
schema comments.
Improve performance of dumping databases with many objects (Tom Lane)
This will also improve the performance of pg_upgrade.
Improve the parallel pg_dump performance of TOAST tables (Tom Lane)
Add dump/restore option --no-table-access-method
to force restore to only use the default table access method
(Justin Pryzby)
Limit support of pg_dump and pg_dumpall to servers running PostgreSQL 9.2 and later (Tom Lane)
Disable default status reporting during pg_upgrade operation if the output is not a terminal (Andres Freund)
The status reporting output can be enabled for non-tty usage by
using --verbose
.
Have pg_upgrade report all databases with invalid connection settings (Jeevan Ladhe)
Previously only the first database with an invalid connection setting was reported.
Store pg_upgrade
temporary files in a new cluster subdirectory called
pg_upgrade_output.d
(Justin Pryzby)
Previously temporary files were stored in the current directory.
Have pg_upgrade preserve relfilenodes, tablespace, and database OIDs between old and new clusters (Shruthi KC, Antonin Houska)
Add a --no-sync
option to
pg_upgrade (Michael Paquier)
This useful only for testing.
Limit support of pg_upgrade to old servers running PostgreSQL 9.2 and later (Tom Lane)
Allow pg_waldump to be filtered by relation file node, block number, fork number, and full page images (David Christensen, Thomas Munro)
Have pg_waldump report statistics before an interrupted exit (Bharath Rupireddy)
For example, issuing a control-C in a terminal running
pg_waldump --stats --follow
will report the
current statistics before exiting. This does not work on Windows.
Improve descriptions of some transaction WAL records reported by pg_waldump (Masahiko Sawada, Michael Paquier)
Allow pg_waldump to dump information about multiple resource managers (Heikki Linnakangas)
This is enabled by specifying the --rmgr
option
multiple times.
Add documentation for pg_encoding_to_char()
and pg_char_to_encoding()
(Ian Lawrence
Barwick)
Document the ^@
starts-with operator (Tom Lane)
Add support for continuous integration testing using cirrus-ci (Andres Freund, Thomas Munro, Melanie Plageman)
Add configure option --with-zstd
to enable Zstandard builds (Jeevan Ladhe, Robert Haas, Michael
Paquier)
Add module field which can be customized for non-community PostgreSQL distributions (Peter Eisentraut)
A module field mismatch would generate an error.
Create a new pg_type.typcategory
value for "char"
(Tom Lane)
Some internal-use-only types have also been assigned this column.
Add new protocol message TARGET
to specify a new COPY
method to be for base
backups (Robert Haas)
Modify pg_basebackup to use this method.
Add new protocol message COMPRESSION
and COMPRESSION_DETAIL
to specify the compression
method and options (Robert Haas)
Remove server support for old BASE_BACKUP
command syntax and base backup protocol (Robert Haas)
Add support for extensions to set custom backup targets (Robert Haas)
Allow extensions to define their own WAL resource managers (Jeff Davis)
Add function pg_settings_get_flags()
to get the flags of server-side variables (Justin Pryzby)
Add server variable allow_in_place_tablespaces
for tablespace testing (Thomas Munro)
Export all server variables on Windows using
PGDLLIMPORT
(Robert Haas)
Previously only specific variables where exported.
Require OpenSSL to build pgcrypto binaries (Peter Eisentraut)
Disallow building with Python 2 (Andres Freund)
Adjust configure to require Perl version 5.8.3 or later (Dagfinn Ilmari Mannsåker)
Add new module pg_walinspect (Bharath Rupireddy)
This gives SQL-level output similar to pg_waldump.
Add module basic_archive to perform archiving via a library (Nathan Bossart)
Add module basebackup_to_shell as a custom backup target (Robert Haas) contrib module.
Add pg_stat_statements output for temporary file block I/O (Masahiko Sawada)
Add JIT counters to pg_stat_statements (Magnus Hagander)
Allow amcheck to check sequences (Mark Dilger)
Improve amcheck sanity checks for TOAST tables (Mark Dilger)
Allow btree_gist indexes on boolean columns (Emre Hasegeli)
These can be used for exclusion constraints.
Indicate the permissive/enforcing state in sepgsql log messages (Dave Page)
Fix pageinspect's
page_header()
to handle 32 kilobyte page sizes
(Quan Zongliang)
Previously improper negative values could be returned in certain cases.
Allow postgres_fdw to push down CASE
expressions
(Alexander Pyhalov)
Add server variable
postgres_fdw.application_name
to control the
application name of postgres_fdw connections (Hayato Kuroda)
Previously the remote application_name
could only be set on the remote server or via
postgres_fdw connection specification.
postgres_fdw.application_name
also supports
escape sequences for customization.
Allow parallel commit on postgres_fdw servers (Etsuro Fujita)
This is enabled with the CREATE SERVER
option
parallel_commit
when using postgres_fdw.
The following individuals (in alphabetical order) have contributed to this release as patch authors, committers, reviewers, testers, or reporters of issues.