PostgreSQL 16

Release history

Every indexed release keeps its original occurrences. CVE counts below are mentions in its notes, including follow-up corrections; they do not count newly fixed vulnerabilities.

Initial release changes

Original entries from 16.0, including feature changes and compatibility notes. Categories aid browsing; they are not upstream classifications.

206 of 206 original entries.

• Change assignment rules for PL/pgSQL bound cursor variables Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/001

• Disallow NULLS NOT DISTINCT indexes for primary keys Compatibility Migration

  Disallow NULLS NOT DISTINCT indexes for primary keys (Daniel Gustafsson) §

  Original release occurrence · 16.0/migration/002

• Change REINDEX DATABASE and reindexdb to not process indexes on system catalogs Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/003

• Tighten GENERATED expression restrictions on inherited and partitioned tables Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/004

• Remove pg_walinspect functions pg_get_wal_records_info_till_end_of_wal() and pg_get_wal_stats_till_end_of_wal() Compatibility Migration

  Remove pg_walinspect functions pg_get_wal_records_info_till_end_of_wal() and pg_get_wal_stats_till_end_of_wal() (Bharath Rupireddy) §

  Original release occurrence · 16.0/migration/005

• Rename server variable force_parallel_mode to debug_parallel_query Compatibility Migration

  Rename server variable force_parallel_mode to debug_parallel_query (David Rowley) § §

  Original release occurrence · 16.0/migration/006

• Remove the ability to create views manually with ON SELECT rules Compatibility Migration

  Remove the ability to create views manually with ON SELECT rules (Tom Lane) §

  Original release occurrence · 16.0/migration/007

• Remove the server variable vacuum_defer_cleanup_age Compatibility Migration

  Remove the server variable vacuum_defer_cleanup_age (Andres Freund) §

  This has been unnecessary since hot_standby_feedback and replication slots were added.

  Original release occurrence · 16.0/migration/008

• Remove server variable promote_trigger_file Compatibility Migration

  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().

  Original release occurrence · 16.0/migration/009

• Remove read-only server variables lc_collate and lc_ctype Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/010

• Role inheritance now controls the default inheritance status of member roles added during GRANT Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/011

• Restrict the privileges of CREATEROLE and its ability to modify other roles Compatibility Migration

  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.

  Original release occurrence · 16.0/migration/012

• Remove symbolic links for the postmaster binary Compatibility Migration

  Remove symbolic links for the postmaster binary (Peter Eisentraut) §

  Original release occurrence · 16.0/migration/013

• Allow incremental sorts in more cases, including DISTINCT Features

  Allow incremental sorts in more cases, including DISTINCT (David Rowley) § §

  Original release occurrence · 16.0/changes/001

• Add the ability for aggregates having ORDER BY or DISTINCT to use pre-sorted data Features

  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.

  Original release occurrence · 16.0/changes/002

• Allow memoize atop a UNION ALL Features

  Allow memoize atop a UNION ALL (Richard Guo) §

  Original release occurrence · 16.0/changes/003

• Allow anti-joins to be performed with the non-nullable input as the inner relation Features

  Allow anti-joins to be performed with the non-nullable input as the inner relation (Richard Guo) §

  Original release occurrence · 16.0/changes/004

• Allow parallelization of FULL and internal right OUTER hash joins Features

  Allow parallelization of FULL and internal right OUTER hash joins (Melanie Plageman, Thomas Munro) §

  Original release occurrence · 16.0/changes/005

• Improve the accuracy of GIN index access optimizer costs Features

  Improve the accuracy of GIN index access optimizer costs (Ronan Dunklau) §

  Original release occurrence · 16.0/changes/006

• Allow more efficient addition of heap and index pages Performance

  Allow more efficient addition of heap and index pages (Andres Freund) § §

  Original release occurrence · 16.0/changes/007

• During non-freeze operations, perform page freezing where appropriate Performance

  During non-freeze operations, perform page freezing where appropriate (Peter Geoghegan) § § §

  This makes full-table freeze vacuums less necessary.

  Original release occurrence · 16.0/changes/008

• Allow window functions to use the faster ROWS mode internally when RANGE mode is active but unnecessary Performance

  Allow window functions to use the faster ROWS mode internally when RANGE mode is active but unnecessary (David Rowley) §

  Original release occurrence · 16.0/changes/009

• Allow optimization of always-increasing window functions ntile(), cume_dist() and percent_rank() Performance

  Allow optimization of always-increasing window functions ntile(), cume_dist() and percent_rank() (David Rowley) §

  Original release occurrence · 16.0/changes/010

• Allow aggregate functions string_agg() and array_agg() to be parallelized Performance

  Allow aggregate functions string_agg() and array_agg() to be parallelized (David Rowley) §

  Original release occurrence · 16.0/changes/011

• Improve performance by caching RANGE and LIST partition lookups Performance

  Improve performance by caching RANGE and LIST partition lookups (Amit Langote, Hou Zhijie, David Rowley) §

  Original release occurrence · 16.0/changes/012

• Allow control of the shared buffer usage by vacuum and analyze Performance

  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.

  Original release occurrence · 16.0/changes/013

• Support wal_sync_method=fdatasync on Windows Performance

  Support wal_sync_method=fdatasync on Windows (Thomas Munro) §

  Original release occurrence · 16.0/changes/014

• Allow HOT updates if only BRIN-indexed columns are updated Performance

  Allow HOT updates if only BRIN-indexed columns are updated (Matthias van de Meent, Josef Simanek, Tomas Vondra) §

  Original release occurrence · 16.0/changes/015

• Improve the speed of updating the process title Performance

  Improve the speed of updating the process title (David Rowley) §

  Original release occurrence · 16.0/changes/016

• Allow xid/subxid searches and ASCII string detection to use vector operations Performance

  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.

  Original release occurrence · 16.0/changes/017

• Reduce overhead of memory allocations Performance

  Reduce overhead of memory allocations (Andres Freund, David Rowley) §

  Original release occurrence · 16.0/changes/018

• Add system view pg_stat_io view to track I/O statistics Features

  Add system view pg_stat_io view to track I/O statistics (Melanie Plageman) § § § § §

  Original release occurrence · 16.0/changes/019

• Record statistics on the last sequential and index scans on tables Features

  Record statistics on the last sequential and index scans on tables (Dave Page) §

  This information appears in pg_stat_*_tables and pg_stat_*_indexes.

  Original release occurrence · 16.0/changes/020

• Record statistics on the occurrence of updated rows moving to new pages Features

  Record statistics on the occurrence of updated rows moving to new pages (Corey Huinker) §

  The pg_stat_*_tables column is n_tup_newpage_upd.

  Original release occurrence · 16.0/changes/021

• Add speculative lock information to the pg_locks system view Features

  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.

  Original release occurrence · 16.0/changes/022

• Add the display of prepared statement result types to the pg_prepared_statements view Features

  Add the display of prepared statement result types to the pg_prepared_statements view (Dagfinn Ilmari Mannsåker) § §

  Original release occurrence · 16.0/changes/023

• Create subscription statistics entries at subscription creation time so stats_reset is accurate Features

  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.

  Original release occurrence · 16.0/changes/024

• Correct the I/O accounting for temp relation writes shown in pg_stat_database Bug fixes

  Correct the I/O accounting for temp relation writes shown in pg_stat_database (Melanie Plageman) §

  Original release occurrence · 16.0/changes/025

• Add function pg_stat_get_backend_subxact() to report on a session's subtransaction cache Features

  Add function pg_stat_get_backend_subxact() to report on a session's subtransaction cache (Dilip Kumar) §

  Original release occurrence · 16.0/changes/026

• Have pg_stat_get_backend_idset(), pg_stat_get_backend_activity(), and related functions use the unchanging backend id Features

  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.

  Original release occurrence · 16.0/changes/027

• Report stand-alone backends with a special backend type Features

  Report stand-alone backends with a special backend type (Melanie Plageman) §

  Original release occurrence · 16.0/changes/028

• Add wait event SpinDelay to report spinlock sleep delays Features

  Add wait event SpinDelay to report spinlock sleep delays (Andres Freund) §

  Original release occurrence · 16.0/changes/029

• Create new wait event DSMAllocate to indicate waiting for dynamic shared memory allocation Features

  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.

  Original release occurrence · 16.0/changes/030

• Add the database name to the process title of logical WAL senders Features

  Add the database name to the process title of logical WAL senders (Tatsuhiro Nakamori) §

  Physical WAL senders do not display a database name.

  Original release occurrence · 16.0/changes/031

• Add checkpoint and REDO LSN information to log_checkpoints messages Features

  Add checkpoint and REDO LSN information to log_checkpoints messages (Bharath Rupireddy, Kyotaro Horiguchi) §

  Original release occurrence · 16.0/changes/032

• Provide additional details during client certificate failures Features

  Provide additional details during client certificate failures (Jacob Champion) §

  Original release occurrence · 16.0/changes/033

• Add predefined role pg_create_subscription with permission to create subscriptions Features

  Add predefined role pg_create_subscription with permission to create subscriptions (Robert Haas) §

  Original release occurrence · 16.0/changes/034

• Allow subscriptions to not require passwords Features

  Allow subscriptions to not require passwords (Robert Haas) § § §

  This is accomplished with the option password_required=false.

  Original release occurrence · 16.0/changes/035

• Simplify permissions for LOCK TABLE Features

  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.

  Original release occurrence · 16.0/changes/036

• Allow ALTER GROUP group_name ADD USER user_name to be performed with ADMIN OPTION Features

  Allow ALTER GROUP group_name ADD USER user_name to be performed with ADMIN OPTION (Robert Haas) §

  Previously CREATEROLE permission was required.

  Original release occurrence · 16.0/changes/037

• Allow GRANT to use WITH ADMIN TRUE/FALSE syntax Features

  Allow GRANT to use WITH ADMIN TRUE/FALSE syntax (Robert Haas) §

  Previously only the WITH ADMIN OPTION syntax was supported.

  Original release occurrence · 16.0/changes/038

• Allow roles that create other roles to automatically inherit the new role's rights or the ability to SET ROLE to the new role Features

  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.

  Original release occurrence · 16.0/changes/039

• Prevent users from changing the default privileges of non-inherited roles Features

  Prevent users from changing the default privileges of non-inherited roles (Robert Haas) §

  This is now only allowed for inherited roles.

  Original release occurrence · 16.0/changes/040

• When granting role membership, require the granted-by role to be a role that has appropriate permissions Features

  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.

  Original release occurrence · 16.0/changes/041

• Allow non-superusers to grant permissions using a granted-by user that is not the current user Features

  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.

  Original release occurrence · 16.0/changes/042

• Add GRANT to control permission to use SET ROLE Features

  Add GRANT to control permission to use SET ROLE (Robert Haas) §

  This is controlled by a new GRANT ... SET option.

  Original release occurrence · 16.0/changes/043

• Add dependency tracking to roles which have granted privileges Features

  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.

  Original release occurrence · 16.0/changes/044

• Add dependency tracking of grantors for GRANT records Features

  Add dependency tracking of grantors for GRANT records (Robert Haas) §

  This guarantees that pg_auth_members.grantor values are always valid.

  Original release occurrence · 16.0/changes/045

• Allow multiple role membership records Features

  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.

  Original release occurrence · 16.0/changes/046

• Prevent removal of superuser privileges for the bootstrap user Features

  Prevent removal of superuser privileges for the bootstrap user (Robert Haas) §

  Restoring such users could lead to errors.

  Original release occurrence · 16.0/changes/047

• Allow makeaclitem() to accept multiple privilege names Features

  Allow makeaclitem() to accept multiple privilege names (Robins Tharakan) §

  Previously only a single privilege name, like SELECT, was accepted.

  Original release occurrence · 16.0/changes/048

• Add support for Kerberos credential delegation Features

  Add support for Kerberos credential delegation (Stephen Frost) § § § §

  This is enabled with server variable gss_accept_delegation and libpq connection parameter gssdelegation.

  Original release occurrence · 16.0/changes/049

• Allow the SCRAM iteration count to be set with server variable scram_iterations Features

  Allow the SCRAM iteration count to be set with server variable scram_iterations (Daniel Gustafsson) §

  Original release occurrence · 16.0/changes/050

• Improve performance of server variable management Performance

  Improve performance of server variable management (Tom Lane) § §

  Original release occurrence · 16.0/changes/051

• Tighten restrictions on which server variables can be reset Features

  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.

  Original release occurrence · 16.0/changes/052

• Move various postgresql.conf items into new categories Features

  Move various postgresql.conf items into new categories (Shinya Kato) §

  This also affects the categories displayed in the pg_settings view.

  Original release occurrence · 16.0/changes/053

• Prevent configuration file recursion beyond 10 levels Features

  Prevent configuration file recursion beyond 10 levels (Julien Rouhaud) §

  Original release occurrence · 16.0/changes/054

• Allow autovacuum to more frequently honor changes to delay settings Features

  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.

  Original release occurrence · 16.0/changes/055

• Remove restrictions that archive files be durably renamed Features

  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.

  Original release occurrence · 16.0/changes/056

• Prevent archive_library and archive_command from being set at the same time Features

  Prevent archive_library and archive_command from being set at the same time (Nathan Bossart) §

  Previously archive_library would override archive_command.

  Original release occurrence · 16.0/changes/057

• Allow the postmaster to terminate children with an abort signal Features

  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.

  Original release occurrence · 16.0/changes/058

• Remove the non-functional postmaster -n option Features

  Remove the non-functional postmaster -n option (Tom Lane) §

  Original release occurrence · 16.0/changes/059

• Allow the server to reserve backend slots for roles with pg_use_reserved_connections membership Features

  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.

  Original release occurrence · 16.0/changes/060

• Allow huge pages to work on newer versions of Windows 10 Features

  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.

  Original release occurrence · 16.0/changes/061

• Add debug_io_direct setting for developer usage Features

  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.

  Original release occurrence · 16.0/changes/062

• Add function pg_split_walfile_name() to report the segment and timeline values of WAL file names Features

  Add function pg_split_walfile_name() to report the segment and timeline values of WAL file names (Bharath Rupireddy) § §

  Original release occurrence · 16.0/changes/063

• Add support for regular expression matching on database and role entries in pg_hba.conf Features

  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.

  Original release occurrence · 16.0/changes/064

• Improve user-column handling of pg_ident.conf to match pg_hba.conf Features

  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.

  Original release occurrence · 16.0/changes/065

• Allow include files in pg_hba.conf and pg_ident.conf Features

  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.

  Original release occurrence · 16.0/changes/066

• Allow pg_hba.conf tokens to be of unlimited length Features

  Allow pg_hba.conf tokens to be of unlimited length (Tom Lane) §

  Original release occurrence · 16.0/changes/067

• Add rule and map numbers to the system view pg_hba_file_rules Features

  Add rule and map numbers to the system view pg_hba_file_rules (Julien Rouhaud) §

  Original release occurrence · 16.0/changes/068

• Determine the default encoding from the locale when using ICU Features

  Determine the default encoding from the locale when using ICU (Jeff Davis) §

  Previously the default was always UTF-8.

  Original release occurrence · 16.0/changes/069

• Have CREATE DATABASE and CREATE COLLATION's LOCALE options, and initdb and createdb --locale options, control non-libc collation providers Features

  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.

  Original release occurrence · 16.0/changes/070

• Add predefined collations unicode and ucs_basic Features

  Add predefined collations unicode and ucs_basic (Peter Eisentraut) §

  This only works if ICU support is enabled.

  Original release occurrence · 16.0/changes/071

• Allow custom ICU collation rules to be created Features

  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.

  Original release occurrence · 16.0/changes/072

• Allow Windows to import system locales automatically Features

  Allow Windows to import system locales automatically (Juan José Santamaría Flecha) §

  Previously, only ICU locales could be imported on Windows.

  Original release occurrence · 16.0/changes/073

• Allow logical decoding on standbys Features

  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.

  Original release occurrence · 16.0/changes/074

• Add server variable to control how logical decoding publishers transfer changes and how subscribers apply them Features

  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.

  Original release occurrence · 16.0/changes/075

• Allow logical replication initial table synchronization to copy rows in binary format Features

  Allow logical replication initial table synchronization to copy rows in binary format (Melih Mutlu) §

  This is only possible for subscriptions marked as binary.

  Original release occurrence · 16.0/changes/076

• Allow parallel application of logical replication Features

  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.

  Original release occurrence · 16.0/changes/077

• Improve performance for logical replication apply without a primary key Performance

  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.

  Original release occurrence · 16.0/changes/078

• Allow logical replication subscribers to process only changes that have no origin Features

  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.

  Original release occurrence · 16.0/changes/079

• Perform logical replication SELECT and DML actions as the table owner Features

  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.

  Original release occurrence · 16.0/changes/080

• Have wal_retrieve_retry_interval operate on a per-subscription basis Features

  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.

  Original release occurrence · 16.0/changes/081

• Add EXPLAIN option GENERIC_PLAN to display the generic plan for a parameterized query Features

  Add EXPLAIN option GENERIC_PLAN to display the generic plan for a parameterized query (Laurenz Albe) §

  Original release occurrence · 16.0/changes/082

• Allow a COPY FROM value to map to a column's DEFAULT Features

  Allow a COPY FROM value to map to a column's DEFAULT (Israel Barth Rubio) §

  Original release occurrence · 16.0/changes/083

• Allow COPY into foreign tables to add rows in batches Features

  Allow COPY into foreign tables to add rows in batches (Andrey Lepikhov, Etsuro Fujita) §

  This is controlled by the postgres_fdw option batch_size.

  Original release occurrence · 16.0/changes/084

• Allow the STORAGE type to be specified by CREATE TABLE Features

  Allow the STORAGE type to be specified by CREATE TABLE (Teodor Sigaev, Aleksander Alekseev) § §

  Previously only ALTER TABLE could control this.

  Original release occurrence · 16.0/changes/085

• Allow truncate triggers on foreign tables Features

  Allow truncate triggers on foreign tables (Yugo Nagata) §

  Original release occurrence · 16.0/changes/086

• Allow VACUUM and vacuumdb to only process TOAST tables Features

  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.

  Original release occurrence · 16.0/changes/087

• Add VACUUM options to skip or update all frozen statistics Features

  Add VACUUM options to skip or update all frozen statistics (Tom Lane, Nathan Bossart) §

  The options are SKIP_DATABASE_STATS and ONLY_DATABASE_STATS.

  Original release occurrence · 16.0/changes/088

• Change REINDEX DATABASE and REINDEX SYSTEM to no longer require an argument Features

  Change REINDEX DATABASE and REINDEX SYSTEM to no longer require an argument (Simon Riggs) § §

  Previously the database name had to be specified.

  Original release occurrence · 16.0/changes/089

• Allow CREATE STATISTICS to generate a statistics name if none is specified Features

  Allow CREATE STATISTICS to generate a statistics name if none is specified (Simon Riggs) §

  Original release occurrence · 16.0/changes/090

• Allow non-decimal integer literals Features

  Allow non-decimal integer literals (Peter Eisentraut) §

  For example, 0x42F, 0o273, and 0b100101.

  Original release occurrence · 16.0/changes/091

• Allow NUMERIC to process hexadecimal, octal, and binary integers of any size Features

  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.

  Original release occurrence · 16.0/changes/092

• Allow underscores in integer and numeric constants Features

  Allow underscores in integer and numeric constants (Peter Eisentraut, Dean Rasheed) §

  This can improve readability for long strings of digits.

  Original release occurrence · 16.0/changes/093

• Accept the spelling +infinity in datetime input Features

  Accept the spelling +infinity in datetime input (Vik Fearing) §

  Original release occurrence · 16.0/changes/094

• Prevent the specification of epoch and infinity together with other fields in datetime strings Features

  Prevent the specification of epoch and infinity together with other fields in datetime strings (Joseph Koshakow) §

  Original release occurrence · 16.0/changes/095

• Remove undocumented support for date input in the form YyearMmonthDday Features

  Remove undocumented support for date input in the form YyearMmonthDday (Joseph Koshakow) §

  Original release occurrence · 16.0/changes/096

• Add functions pg_input_is_valid() and pg_input_error_info() to check for type conversion errors Features

  Add functions pg_input_is_valid() and pg_input_error_info() to check for type conversion errors (Tom Lane) § §

  Original release occurrence · 16.0/changes/097

• Allow subqueries in the FROM clause to omit aliases Features

  Allow subqueries in the FROM clause to omit aliases (Dean Rasheed) §

  Original release occurrence · 16.0/changes/098

• Add support for enhanced numeric literals in SQL/JSON paths Features

  Add support for enhanced numeric literals in SQL/JSON paths (Peter Eisentraut) §

  For example, allow hexadecimal, octal, and binary integers and underscores between digits.

  Original release occurrence · 16.0/changes/099

• Add SQL/JSON constructors Features

  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.

  Original release occurrence · 16.0/changes/100

• Add SQL/JSON object checks Features

  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.

  Original release occurrence · 16.0/changes/101

• Allow JSON string parsing to use vector operations Features

  Allow JSON string parsing to use vector operations (John Naylor) §

  Original release occurrence · 16.0/changes/102

• Improve the handling of full text highlighting function ts_headline() for OR and NOT expressions Features

  Improve the handling of full text highlighting function ts_headline() for OR and NOT expressions (Tom Lane) §

  Original release occurrence · 16.0/changes/103

• Add functions to add, subtract, and generate timestamptz values in a specified time zone Features

  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().

  Original release occurrence · 16.0/changes/104

• Change date_trunc(unit, timestamptz, time_zone) to be an immutable function Features

  Change date_trunc(unit, timestamptz, time_zone) to be an immutable function (Przemyslaw Sztoch) §

  This allows the creation of expression indexes using this function.

  Original release occurrence · 16.0/changes/105

• Add server variable SYSTEM_USER Features

  Add server variable SYSTEM_USER (Bertrand Drouvot) §

  This reports the authentication method and its authenticated user.

  Original release occurrence · 16.0/changes/106

• Add functions array_sample() and array_shuffle() Features

  Add functions array_sample() and array_shuffle() (Martin Kalcher) §

  Original release occurrence · 16.0/changes/107

• Add aggregate function ANY_VALUE() which returns any value from a set Features

  Add aggregate function ANY_VALUE() which returns any value from a set (Vik Fearing) §

  Original release occurrence · 16.0/changes/108

• Add function random_normal() to supply normally-distributed random numbers Features

  Add function random_normal() to supply normally-distributed random numbers (Paul Ramsey) §

  Original release occurrence · 16.0/changes/109

• Add error function erf() and its complement erfc() Features

  Add error function erf() and its complement erfc() (Dean Rasheed) §

  Original release occurrence · 16.0/changes/110

• Improve the accuracy of numeric power() for integer exponents Features

  Improve the accuracy of numeric power() for integer exponents (Dean Rasheed) §

  Original release occurrence · 16.0/changes/111

• Add XMLSERIALIZE() option INDENT to pretty-print its output Features

  Add XMLSERIALIZE() option INDENT to pretty-print its output (Jim Jones) §

  Original release occurrence · 16.0/changes/112

• Change pg_collation_actual_version() to return a reasonable value for the default collation Features

  Change pg_collation_actual_version() to return a reasonable value for the default collation (Jeff Davis) §

  Previously it returned NULL.

  Original release occurrence · 16.0/changes/113

• Allow pg_read_file() and pg_read_binary_file() to ignore missing files Features

  Allow pg_read_file() and pg_read_binary_file() to ignore missing files (Kyotaro Horiguchi) §

  Original release occurrence · 16.0/changes/114

• Add byte specification (B) to pg_size_bytes() Features

  Add byte specification (B) to pg_size_bytes() (Peter Eisentraut) §

  Original release occurrence · 16.0/changes/115

• Allow to_reg* functions to accept numeric OIDs as input Features

  Allow to_reg* functions to accept numeric OIDs as input (Tom Lane) §

  Original release occurrence · 16.0/changes/116

• Add the ability to get the current function's OID in PL/pgSQL Features

  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.

  Original release occurrence · 16.0/changes/117

• Add libpq connection option require_auth to specify a list of acceptable authentication methods Features

  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.

  Original release occurrence · 16.0/changes/118

• Allow multiple libpq-specified hosts to be randomly selected Features

  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.

  Original release occurrence · 16.0/changes/119

• Add libpq option sslcertmode to control transmission of the client certificate Features

  Add libpq option sslcertmode to control transmission of the client certificate (Jacob Champion) §

  The option values are disable, allow, and require.

  Original release occurrence · 16.0/changes/120

• Allow libpq to use the system certificate pool for certificate verification Features

  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.

  Original release occurrence · 16.0/changes/121

• Allow ECPG variable declarations to use typedef names that match unreserved SQL keywords Features

  Allow ECPG variable declarations to use typedef names that match unreserved SQL keywords (Tom Lane) §

  This change does prevent keywords which match C typedef names from being processed as keywords in later EXEC SQL blocks.

  Original release occurrence · 16.0/changes/122

• Allow psql to control the maximum width of header lines in expanded format Features

  Allow psql to control the maximum width of header lines in expanded format (Platon Pronko) §

  This is controlled by xheader_width.

  Original release occurrence · 16.0/changes/123

• Add psql command \drg to show role membership details Features

  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.

  Original release occurrence · 16.0/changes/124

• Allow psql's access privilege commands to show system objects Features

  Allow psql's access privilege commands to show system objects (Nathan Bossart) § §

  The options are \dpS and \zS.

  Original release occurrence · 16.0/changes/125

• Add FOREIGN designation to psql \d+ for foreign table children and partitions Features

  Add FOREIGN designation to psql \d+ for foreign table children and partitions (Ian Lawrence Barwick) §

  Original release occurrence · 16.0/changes/126

• Prevent \df+ from showing function source code Features

  Prevent \df+ from showing function source code (Isaac Morland) §

  Function bodies are more easily viewed with \sf.

  Original release occurrence · 16.0/changes/127

• Allow psql to submit queries using the extended query protocol Features

  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.

  Original release occurrence · 16.0/changes/128

• Allow psql \watch to limit the number of executions Features

  Allow psql \watch to limit the number of executions (Andrey Borodin) §

  The \watch options can now be named when specified.

  Original release occurrence · 16.0/changes/129

• Detect invalid values for psql \watch, and allow zero to specify no delay Features

  Detect invalid values for psql \watch, and allow zero to specify no delay (Andrey Borodin) §

  Original release occurrence · 16.0/changes/130

• Allow psql scripts to obtain the exit status of shell commands and queries Features

  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.

  Original release occurrence · 16.0/changes/131

• Various psql tab completion improvements Features

  Various psql tab completion improvements (Vignesh C, Aleksander Alekseev, Dagfinn Ilmari Mannsåker, Shi Yu, Michael Paquier, Ken Kato, Peter Smith) § § § § § § § § § § § §

  Original release occurrence · 16.0/changes/132

• Add pg_dump control of dumping child tables and partitions Features

  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.

  Original release occurrence · 16.0/changes/133

• Add LZ4 and Zstandard compression to pg_dump Features

  Add LZ4 and Zstandard compression to pg_dump (Georgios Kokolatos, Justin Pryzby)

  Original release occurrence · 16.0/changes/134

• Allow pg_dump and pg_basebackup to use long mode for compression Features

  Allow pg_dump and pg_basebackup to use long mode for compression (Justin Pryzby) § § § §

  Original release occurrence · 16.0/changes/135

• Improve pg_dump to accept a more consistent compression syntax Features

  Improve pg_dump to accept a more consistent compression syntax (Georgios Kokolatos) §

  Options like --compress=gzip:5.

  Original release occurrence · 16.0/changes/136

• Add initdb option to set server variables for the duration of initdb and all future server starts Features

  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.

  Original release occurrence · 16.0/changes/137

• Add options to createuser to control more user options Features

  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.

  Original release occurrence · 16.0/changes/138

• Deprecate createuser option --role Features

  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.

  Original release occurrence · 16.0/changes/139

• Allow control of vacuumdb schema processing Features

  Allow control of vacuumdb schema processing (Gilles Darold) §

  These are controlled by options --schema and --exclude-schema.

  Original release occurrence · 16.0/changes/140

• Use new VACUUM options to improve the performance of vacuumdb Performance

  Use new VACUUM options to improve the performance of vacuumdb (Tom Lane, Nathan Bossart) §

  Original release occurrence · 16.0/changes/141

• Have pg_upgrade set the new cluster's locale and encoding Features

  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.

  Original release occurrence · 16.0/changes/142

• Add pg_upgrade option to specify the default transfer mode Features

  Add pg_upgrade option to specify the default transfer mode (Peter Eisentraut) §

  The option is --copy.

  Original release occurrence · 16.0/changes/143

• Improve pg_basebackup to accept numeric compression options Features

  Improve pg_basebackup to accept numeric compression options (Georgios Kokolatos, Michael Paquier) §

  Options like --compress=server-5 are now supported.

  Original release occurrence · 16.0/changes/144

• Fix pg_basebackup to handle tablespaces stored in the PGDATA directory Bug fixes

  Fix pg_basebackup to handle tablespaces stored in the PGDATA directory (Robert Haas) §

  Original release occurrence · 16.0/changes/145

• Add pg_waldump option --save-fullpage to dump full page images Features

  Add pg_waldump option --save-fullpage to dump full page images (David Christensen) §

  Original release occurrence · 16.0/changes/146

• Allow pg_waldump options -t/--timeline to accept hexadecimal values Features

  Allow pg_waldump options -t/--timeline to accept hexadecimal values (Peter Eisentraut) §

  Original release occurrence · 16.0/changes/147

• Add support for progress reporting to pg_verifybackup Features

  Add support for progress reporting to pg_verifybackup (Masahiko Sawada) §

  Original release occurrence · 16.0/changes/148

• Allow pg_rewind to properly track timeline changes Features

  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.

  Original release occurrence · 16.0/changes/149

• Have pg_receivewal and pg_recvlogical cleanly exit on SIGTERM Features

  Have pg_receivewal and pg_recvlogical cleanly exit on SIGTERM (Christoph Berg) §

  This signal is often used by systemd.

  Original release occurrence · 16.0/changes/150

• Build ICU support by default Features

  Build ICU support by default (Jeff Davis) §

  This removes build flag --with-icu and adds flag --without-icu.

  Original release occurrence · 16.0/changes/151

• Add support for SSE2 (Streaming SIMD Extensions 2) vector operations on x86-64 architectures Features

  Add support for SSE2 (Streaming SIMD Extensions 2) vector operations on x86-64 architectures (John Naylor) §

  Original release occurrence · 16.0/changes/152

• Add support for Advanced SIMD (Single Instruction Multiple Data) (NEON) instructions on ARM architectures Features

  Add support for Advanced SIMD (Single Instruction Multiple Data) (NEON) instructions on ARM architectures (Nathan Bossart) §

  Original release occurrence · 16.0/changes/153

• Have Windows binaries built with MSVC use RandomizedBaseAddress (ASLR) Features

  Have Windows binaries built with MSVC use RandomizedBaseAddress (ASLR) (Michael Paquier) §

  This was already enabled on MinGW builds.

  Original release occurrence · 16.0/changes/154

• Prevent extension libraries from exporting their symbols by default Features

  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.

  Original release occurrence · 16.0/changes/155

• Require Windows 10 or newer versions Features

  Require Windows 10 or newer versions (Michael Paquier, Juan José Santamaría Flecha) §

  Previously Windows Vista and Windows XP were supported.

  Original release occurrence · 16.0/changes/156

• Require Perl version 5.14 or later Features

  Require Perl version 5.14 or later (John Naylor) §

  Original release occurrence · 16.0/changes/157

• Require Bison version 2.3 or later Features

  Require Bison version 2.3 or later (John Naylor) §

  Original release occurrence · 16.0/changes/158

• Require Flex version 2.5.35 or later Features

  Require Flex version 2.5.35 or later (John Naylor) §

  Original release occurrence · 16.0/changes/159

• Require MIT Kerberos for GSSAPI support Features

  Require MIT Kerberos for GSSAPI support (Stephen Frost) §

  Original release occurrence · 16.0/changes/160

• Remove support for Visual Studio 2013 Features

  Remove support for Visual Studio 2013 (Michael Paquier) §

  Original release occurrence · 16.0/changes/161

• Remove support for HP-UX Features

  Remove support for HP-UX (Thomas Munro) §

  Original release occurrence · 16.0/changes/162

• Remove support for HP/Intel Itanium Features

  Remove support for HP/Intel Itanium (Thomas Munro) §

  Original release occurrence · 16.0/changes/163

• Remove support for M68K, M88K, M32R, and SuperH CPU architectures Features

  Remove support for M68K, M88K, M32R, and SuperH CPU architectures (Thomas Munro) § §

  Original release occurrence · 16.0/changes/164

• Remove libpq support for SCM credential authentication Features

  Remove libpq support for SCM credential authentication (Michael Paquier) §

  Backend support for this authentication method was removed in PostgresSQL 9.1.

  Original release occurrence · 16.0/changes/165

• Add meson build system Features

  Add meson build system (Andres Freund, Nazir Bilal Yavuz, Peter Eisentraut) §

  This eventually will replace the Autoconf and Windows-based MSVC build systems.

  Original release occurrence · 16.0/changes/166

• Allow control of the location of the openssl binary used by the build system Features

  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

  Original release occurrence · 16.0/changes/167

• Add build option to allow testing of small table segment sizes Features

  Add build option to allow testing of small table segment sizes (Andres Freund) §

  The build options are --with-segsize-blocks and -Dsegsize_blocks.

  Original release occurrence · 16.0/changes/168

• Add pgindent options Features

  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.

  Original release occurrence · 16.0/changes/169

• Add pg_bsd_indent source code to the main tree Features

  Add pg_bsd_indent source code to the main tree (Tom Lane) §

  Original release occurrence · 16.0/changes/170

• Improve make_ctags and make_etags Features

  Improve make_ctags and make_etags (Yugo Nagata) §

  Original release occurrence · 16.0/changes/171

• Adjust pg_attribute columns for efficiency Features

  Adjust pg_attribute columns for efficiency (Peter Eisentraut) §

  Original release occurrence · 16.0/changes/172

• Improve use of extension-based indexes on boolean columns Features

  Improve use of extension-based indexes on boolean columns (Zongliang Quan, Tom Lane) §

  Original release occurrence · 16.0/changes/173

• Add support for Daitch-Mokotoff Soundex to fuzzystrmatch Features

  Add support for Daitch-Mokotoff Soundex to fuzzystrmatch (Dag Lem) §

  Original release occurrence · 16.0/changes/174

• Allow auto_explain to log values passed to parameterized statements Features

  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.

  Original release occurrence · 16.0/changes/175

• Have auto_explain's log_verbose mode honor the value of compute_query_id Features

  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.

  Original release occurrence · 16.0/changes/176

• Change the maximum length of ltree labels from 256 to 1000 and allow hyphens Features

  Change the maximum length of ltree labels from 256 to 1000 and allow hyphens (Garen Torikian) §

  Original release occurrence · 16.0/changes/177

• Have pg_stat_statements normalize constants used in utility commands Features

  Have pg_stat_statements normalize constants used in utility commands (Michael Paquier) §

  Previously constants appeared instead of placeholders, e.g., $1.

  Original release occurrence · 16.0/changes/178

• Add pg_walinspect function pg_get_wal_block_info() to report WAL block information Features

  Add pg_walinspect function pg_get_wal_block_info() to report WAL block information (Michael Paquier, Melanie Plageman, Bharath Rupireddy) § § § §

  Original release occurrence · 16.0/changes/179

• Change how pg_walinspect functions pg_get_wal_records_info() and pg_get_wal_stats() interpret ending LSNs Features

  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.

  Original release occurrence · 16.0/changes/180

• Add detailed descriptions of WAL records in pg_walinspect and pg_waldump Features

  Add detailed descriptions of WAL records in pg_walinspect and pg_waldump (Melanie Plageman, Peter Geoghegan) § § § §

  Original release occurrence · 16.0/changes/181

• Add pageinspect function bt_multi_page_stats() to report statistics on multiple pages Features

  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.

  Original release occurrence · 16.0/changes/182

• Add empty range output column to pageinspect function brin_page_items() Features

  Add empty range output column to pageinspect function brin_page_items() (Tomas Vondra) §

  Original release occurrence · 16.0/changes/183

• Redesign archive modules to be more flexible Features

  Redesign archive modules to be more flexible (Nathan Bossart) §

  Initialization changes will require modules written for older versions of Postgres to be updated.

  Original release occurrence · 16.0/changes/184

• Correct inaccurate pg_stat_statements row tracking extended query protocol statements Bug fixes

  Correct inaccurate pg_stat_statements row tracking extended query protocol statements (Sami Imseih) §

  Original release occurrence · 16.0/changes/185

• Add pg_buffercache function pg_buffercache_usage_counts() to report usage totals Features

  Add pg_buffercache function pg_buffercache_usage_counts() to report usage totals (Nathan Bossart) §

  Original release occurrence · 16.0/changes/186

• Add pg_buffercache function pg_buffercache_summary() to report summarized buffer statistics Features

  Add pg_buffercache function pg_buffercache_summary() to report summarized buffer statistics (Melih Mutlu) §

  Original release occurrence · 16.0/changes/187

• Allow the schemas of required extensions to be referenced in extension scripts using the new syntax @extschema:referenced_extension_name@ Features

  Allow the schemas of required extensions to be referenced in extension scripts using the new syntax @extschema:referenced_extension_name@ (Regina Obe) §

  Original release occurrence · 16.0/changes/188

• Allow required extensions to be marked as non-relocatable using no_relocate Features

  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.

  Original release occurrence · 16.0/changes/189

• Allow postgres_fdw to do aborts in parallel Features

  Allow postgres_fdw to do aborts in parallel (Etsuro Fujita) §

  This is enabled with postgres_fdw option parallel_abort.

  Original release occurrence · 16.0/changes/190

• Make ANALYZE on foreign postgres_fdw tables more efficient Features

  Make ANALYZE on foreign postgres_fdw tables more efficient (Tomas Vondra) §

  The postgres_fdw option analyze_sampling controls the sampling method.

  Original release occurrence · 16.0/changes/191

• Restrict shipment of reg* type constants in postgres_fdw to those referencing built-in objects or extensions marked as shippable Features

  Restrict shipment of reg* type constants in postgres_fdw to those referencing built-in objects or extensions marked as shippable (Tom Lane) §

  Original release occurrence · 16.0/changes/192

• Have postgres_fdw and dblink handle interrupts during connection establishment Features

  Have postgres_fdw and dblink handle interrupts during connection establishment (Andres Freund) §

  Original release occurrence · 16.0/changes/193

Security evidence

60 records from the official security matrix and release-note mentions. A fixed version is shown only when the security snapshot explicitly names this branch. A mention alone does not establish applicability or a new fix.