aboutsummaryrefslogtreecommitdiff
path: root/doc/src
Commit message (Collapse)AuthorAge
...
* Fix whitespacePeter Eisentraut2023-11-10
| | | | Fix trailing whitespace from commit 322f55bdbd.
* doc: fix wording describing the checkpoint_flush_after GUCBruce Momjian2023-11-09
| | | | | | | | Reported-by: Evan Macbeth Discussion: https://postgr.es/m/155208475619.1380.12815553062985622271@wrigleys.postgresql.org Backpatch-through: master
* doc: remove unnecessary comma in postgres-fdwBruce Momjian2023-11-09
| | | | Backpatch-through: master
* doc:: simplify introductory textBruce Momjian2023-11-08
| | | | | | | | | | Reported-by: Joshua D. Drake Discussion: https://postgr.es/m/5ac2c96d-37a6-18aa-08c4-327a6fbff24b@commandprompt.com Author: Joshua D. Drake Backpatch-through: master
* doc: change "system" to "cluster" where appropriateBruce Momjian2023-11-08
| | | | | | | | Reported-by: Jeff Davis Discussion: https://postgr.es/m/d040a1144e0127a49e335d1244a4de102a2a443b.camel@j-davis.com Backpatch-through: master
* doc: mention that ANALYZE does block DDLBruce Momjian2023-11-08
| | | | | | | | | | Reported-by: Aramaki Zyake Discussion: https://postgr.es/m/156628723253.1296.7377373462603881976%40wrigleys.postgresql.org Author: Aramaki Zyake Backpatch-through: master
* Remove distprepPeter Eisentraut2023-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A PostgreSQL release tarball contains a number of prebuilt files, in particular files produced by bison, flex, perl, and well as html and man documentation. We have done this consistent with established practice at the time to not require these tools for building from a tarball. Some of these tools were hard to get, or get the right version of, from time to time, and shipping the prebuilt output was a convenience to users. Now this has at least two problems: One, we have to make the build system(s) work in two modes: Building from a git checkout and building from a tarball. This is pretty complicated, but it works so far for autoconf/make. It does not currently work for meson; you can currently only build with meson from a git checkout. Making meson builds work from a tarball seems very difficult or impossible. One particular problem is that since meson requires a separate build directory, we cannot make the build update files like gram.h in the source tree. So if you were to build from a tarball and update gram.y, you will have a gram.h in the source tree and one in the build tree, but the way things work is that the compiler will always use the one in the source tree. So you cannot, for example, make any gram.y changes when building from a tarball. This seems impossible to fix in a non-horrible way. Second, there is increased interest nowadays in precisely tracking the origin of software. We can reasonably track contributions into the git tree, and users can reasonably track the path from a tarball to packages and downloads and installs. But what happens between the git tree and the tarball is obscure and in some cases non-reproducible. The solution for both of these issues is to get rid of the step that adds prebuilt files to the tarball. The tarball now only contains what is in the git tree (*). Getting the additional build dependencies is no longer a problem nowadays, and the complications to keep these dual build modes working are significant. And of course we want to get the meson build system working universally. This commit removes the make distprep target altogether. The make dist target continues to do its job, it just doesn't call distprep anymore. (*) - The tarball also contains the INSTALL file that is built at make dist time, but not by distprep. This is unchanged for now. The make maintainer-clean target, whose job it is to remove the prebuilt files in addition to what make distclean does, is now just an alias to make distprep. (In practice, it is probably obsolete given that git clean is available.) The following programs are now hard build requirements in configure (they were already required by meson.build): - bison - flex - perl Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Andres Freund <andres@anarazel.de> Discussion: https://www.postgresql.org/message-id/flat/e07408d9-e5f2-d9fd-5672-f53354e9305e@eisentraut.org
* Add XMLText function (SQL/XML X038)Daniel Gustafsson2023-11-06
| | | | | | | | | | | | | | | | | | | This function implements the standard XMLTest function, which converts text into xml text nodes. It uses the libxml2 function xmlEncodeSpecialChars to escape predefined entities (&"<>), so that those do not cause any conflict when concatenating the text node output with existing xml documents. This also adds a note in features.sgml about not supporting XML(SEQUENCE). The SQL specification defines a RETURNING clause to a set of XML functions, where RETURNING CONTENT or RETURNING SEQUENCE can be defined. Since PostgreSQL doesn't support XML(SEQUENCE) all of these functions operate with an implicit RETURNING CONTENT. Author: Jim Jones <jim.jones@uni-muenster.de> Reviewed-by: Vik Fearing <vik@postgresfriends.org> Discussion: https://postgr.es/m/86617a66-ec95-581f-8d54-08059cca8885@uni-muenster.de
* doc: pg_resetwal: Add comments how the multipliers are derivedPeter Eisentraut2023-11-06
| | | | | Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Discussion: https://www.postgresql.org/message-id/flat/0f3ab4a1-ae80-56e8-3426-6b4a02507687@eisentraut.org
* meson: docs: Install all manpages, not just ones in man1Andres Freund2023-11-03
| | | | | | | | | In f13eb16485f I made a mistake leading to only man1 being installed. I will report a bug suggesting that meson warn about mistakes of this sort. Reported-by: Christoph Berg <myon@debian.org> Discussion: https://postgr.es/m/ZUU5pRQO6ZUeBsi6@msg.df7cb.de Backpatch: 16-, where the meson build was introduced
* doc: move HBA reload instructions above the syntax detailsBruce Momjian2023-11-03
| | | | | | | | Reported-by: John <johrss@amazon.com> Discussion: https://postgr.es/m/165947088723.651.7641196693246068619@wrigleys.postgresql.org Backpatch-through: master
* doc: \copy can get data values \. and end-of-input confusedBruce Momjian2023-11-03
| | | | | | | | Reported-by: Svante Richter Discussion: https://postgr.es/m/fcd57e4-8f23-4c3e-a5db-2571d09208e2@beta.fastmail.com Backpatch-through: 11
* doc: CREATE DATABASE doesn't copy db-level perms. from templateBruce Momjian2023-11-03
| | | | | | | | Reported-by: david@kapitaltrading.com Discussion: https://postgr.es/m/166007719137.995877.13951579839074751714@wrigleys.postgresql.org Backpatch-through: 11
* doc: mention ORDER BY for some aggregates, add ORDER BY examplesBruce Momjian2023-11-03
| | | | | | | | Discussion: https://postgr.es/m/CAKFQuwb+4SWnfrfQKB-UM1P1x97Xk+ybSar4xM32XGLd=fq9bA@mail.gmail.com Co-authored-by: David G. Johnston Backpatch-through: master
* Doc: update CREATE RULE ref page's hoary discussion of views.Tom Lane2023-11-03
| | | | | | | | | | | | | | | | | | | | This text left one with the impression that an ON SELECT rule could be attached to a plain table, which has not been true since commit 264c06820 (meaning the text was already misleading when written, evidently by me in 96bd67f61). However, it didn't get really bad until b23cd185f removed the convert-a-table-to-a-view logic, which had made it possible for scripts that thought they were attaching ON SELECTs to tables to still work. Rewrite into a form that makes it clear that an ON SELECT rule is better regarded as an implementation detail of a view. Pre-v16, point out that adding ON SELECT to a table actually converts it to a view. Per bug #18178 from Joshua Uyehara. Back-patch to all supported branches. Discussion: https://postgr.es/m/18178-05534d7064044d2d@postgresql.org
* doc: ALTER DEFAULT PRIVILEGES does not affect inherited rolesBruce Momjian2023-11-03
| | | | | | | | | | Reported-by: Jordi Gutiérrez Hermoso Discussion: https://postgr.es/m/72652d72e1816bfc3c05d40f9e0e0373d07823c8.camel@octave.org Co-authored-by: Laurenz Albe Backpatch-through: 11
* Additional unicode primitive functions.Jeff Davis2023-11-01
| | | | | | | | | | | | Introduce unicode_version(), icu_unicode_version(), and unicode_assigned(). The latter requires introducing a new lookup table for the Unicode General Category, which is generated along with the other Unicode lookup tables. Discussion: https://postgr.es/m/CA+TgmoYzYR-yhU6k1XFCADeyj=Oyz2PkVsa3iKv+keM8wp-F_A@mail.gmail.com Reviewed-by: Peter Eisentraut
* doc: Replace reference to ERRCODE_RAISE_EXCEPTION by "raise_exception"Michael Paquier2023-11-02
| | | | | | | | | | | This part of the documentation refers to exceptions as handled by PL/pgSQL, and using the internal error code is confusing. Per thinko in 66bde49d96a9. Reported-by: Euler Taveira, Bruce Momjian Discussion: https://postgr.es/m/ZUEUnLevXyW7DlCs@momjian.us Backpatch-through: 11
* doc: add reference to wire protocol detailsBruce Momjian2023-11-01
| | | | | | | | Discussion: https://postgr.es/m/143A51B2-80B1-4ECD-AF67-F7061377FF63@hotmail.com Author: Li Japin Backpatch-through: master
* doc: Expand section related to LWLocks and shared memoryMichael Paquier2023-11-01
| | | | | | | | | | | | | | | | | | | | | | The documentation includes a section describing how to define custom LWLocks in extensions using the shmem hooks. However, it has never mentioned the second, more flexible method based on the following routines: - LWLockNewTrancheId() to allocate a tranche ID. - LWLockRegisterTranche() to associate a name to a tranche ID. - LWLockInitialize() to initialize a LWLock with a tranche ID. autoprewarm.c is the only example of extension in the tree that allocates a LWLock this way. This commit adds some documentation about all that. While on it, a comment is added about the need of AddinShmemInitLock. This is required especially for EXEC_BACKEND builds (aka Windows, normally), as per a remark from Alexander, because backends can execute shmem initialization paths concurrently. Author: Aleksander Alekseev, Michael Paquier Discussion: https://postgr.es/m/CAJ7c6TPKhFgL+54cdTD9yGpG4+sNcyJ+N1GvQqAxgWENAOa3VA@mail.gmail.com
* doc: add missing word to sentence about ParisBruce Momjian2023-10-31
| | | | | | | | Reported-by: Tang <tanghy.fnst@fujitsu.com> Discussion: https://postgr.es/m/OS0PR01MB6113393560A1DF115ADFB153FB2D9@OS0PR01MB6113.jpnprd01.prod.outlook.com Backpatch-through: master
* C comment: improve statistics computation comment exampleBruce Momjian2023-10-31
| | | | | | | | Discussion: https://postgr.es/m/CAKFQuwbD672Sc0EXv0ifx3pzfQ5UAEpiAeaBGKz_Ox-4d2NGCA@mail.gmail.com Author: David G. Johnston Backpatch-through: master
* doc: improve ALTER SYSTEM description of value list quotingBruce Momjian2023-10-31
| | | | | | | | Reported-by: splarv@ya.ru Discussion: https://postgr.es/m/167105927893.1897.13227723035830709578@wrigleys.postgresql.org Backpatch-through: 11
* doc: improve bpchar and character type length detailsBruce Momjian2023-10-31
| | | | | | | | | | Reported-by: Jeff Davis Discussion: https://postgr.es/m/32a9b8357e8e29b04f395f92c53b64e015a4caf1.camel@j-davis.com Author: Jeff Davis, adjustments by me Backpatch-through: 16
* doc: add function argument and query parameter limitsBruce Momjian2023-10-31
| | | | | | | | | | | | Also reorder entries and add commas. Reported-by: David G. Johnston Discussion: https://postgr.es/m/CAKFQuwYeNPxeocV3_0+Zx=_Xwvg+sNyEMdzyG5s2E2e0hZLQhg@mail.gmail.com Author: David G. Johnston (partial) Backpatch-through: 12
* doc: 1-byte varlena headers can be used for user PLAIN storageBruce Momjian2023-10-31
| | | | | | | | | | | | This also updates some C comments. Reported-by: suchithjn22@gmail.com Discussion: https://postgr.es/m/167336599095.2667301.15497893107226841625@wrigleys.postgresql.org Author: Laurenz Albe (doc patch) Backpatch-through: 11
* Doc: Make link names consistent in logical replication commands.Amit Kapila2023-10-30
| | | | | | | | | | | | | Commit 536f410111 added links in the ALTER SUBSCRIPTION command page. The link names used were slightly different from what other logical replication commands like CREATE SUBSCRIPTION/PUBLICATION have but were consistent with other docs. This patch changes the link names for all the parameters to have 'params' word in the CREATE SUBSCRIPTION/PUBLICATION pages. Author: Peter Smith Reviewed-by: Amit Kapila Discussion: http://postgr.es/m/CAHut%2BPu2S4RdzYKR7H5_E7QYWyq5hB0hL4EFrYbP91Qso62jeg%40mail.gmail.com
* Introduce pg_stat_checkpointerMichael Paquier2023-10-30
| | | | | | | | | | | | | | | | | | | | | | | | Historically, the statistics of the checkpointer have been always part of pg_stat_bgwriter. This commit removes a few columns from pg_stat_bgwriter, and introduces pg_stat_checkpointer with equivalent, renamed columns (plus a new one for the reset timestamp): - checkpoints_timed -> num_timed - checkpoints_req -> num_requested - checkpoint_write_time -> write_time - checkpoint_sync_time -> sync_time - buffers_checkpoint -> buffers_written The fields of PgStat_CheckpointerStats and its SQL functions are renamed to match with the new field names, for consistency. Note that background writer and checkpointer have been split into two different processes in commits 806a2aee3791 and bf405ba8e460. The pgstat structures were already split, making this change straight-forward. Bump catalog version. Author: Bharath Rupireddy Reviewed-by: Bertrand Drouvot, Andres Freund, Michael Paquier Discussion: https://postgr.es/m/CALj2ACVxX2ii=66RypXRweZe2EsBRiPMj0aHfRfHUeXJcC7kHg@mail.gmail.com
* doc: add links to Postgres features introBruce Momjian2023-10-28
| | | | | | | | Reported-by: Elena Indrupskaya Discussion: https://postgr.es/m/1a666b2e-d373-1c94-1005-1700e023670d@postgrespro.ru Backpatch-through: master
* doc: improve text around consistency of statistics valuesBruce Momjian2023-10-27
| | | | | | | | Discussion: https://postgr.es/m/CAKFQuwZ4CXtTyR19vFbd9WwmW-4BvgAenmF2CfUpx0LWwRPGYg@mail.gmail.com Author: David G. Johnston Backpatch-through: master
* doc: improve config syncfs wordingBruce Momjian2023-10-27
| | | | | | | | Reported-by: Eric Mutta Discussion: https://postgr.es/m/166126549332.651.12934187158820082671@wrigleys.postgresql.org Backpatch-through: master
* Clarify the result order of unnest(multirange).Jeff Davis2023-10-27
| | | | | | | | | | | | | | | It is best not to mention the storage order, because that is an implementation detail and has confused at least one user, who assumed that the storage order is the order in which the constituent ranges were written in SQL. Since the sorting order is explained at the beginning of the page, it should be sufficient to say that the ranges are returned in ascending order. Author: Laurenz Albe Reviewed-by: Daniel Fredouille Discussion: https://postgr.es/m/169627213477.3727338.17653654241633692682%40wrigleys.postgresql.org
* doc: wording improvementsBruce Momjian2023-10-27
| | | | | | | | Discussion: https://postgr.es/m/a5180360-ec04-ac58-25ce-3d795d3d1f6c@postgrespro.ru Author: Ekaterina Kiryanova Backpatch-through: master
* Teach contrib/amcheck to check the unique constraint violationAlexander Korotkov2023-10-28
| | | | | | | | | | | | | | | | | | | | Add the 'checkunique' argument to bt_index_check() and bt_index_parent_check(). When the flag is specified the procedures will check the unique constraint violation for unique indexes. Only one heap entry for all equal keys in the index should be visible (including posting list entries). Report an error otherwise. pg_amcheck called with the --checkunique option will do the same check for all the indexes it checks. Author: Anastasia Lubennikova <lubennikovaav@gmail.com> Author: Pavel Borisov <pashkin.elfe@gmail.com> Author: Maxim Orlov <orlovmg@gmail.com> Reviewed-by: Mark Dilger <mark.dilger@enterprisedb.com> Reviewed-by: Zhihong Yu <zyu@yugabyte.com> Reviewed-by: Peter Geoghegan <pg@bowt.ie> Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Discussion: https://postgr.es/m/CALT9ZEHRn5xAM5boga0qnrCmPV52bScEK2QnQ1HmUZDD301JEg%40mail.gmail.com
* doc: clarify logical decoding's deadlock of system tablesBruce Momjian2023-10-27
| | | | | | | | Reported-by: andyatkinson@gmail.com Discussion: https://postgr.es/m/166631875298.630.2861049399528658047@wrigleys.postgresql.org Backpatch-through: master
* |--- gitweb subject length limit ----------------|-email limit-|Bruce Momjian2023-10-27
| | | | | | | | | | doc: fix first-person wording Reported-by: wolakk@gmail.com Discussion: https://postgr.es/m/166692581961.630.17489529868325734636@wrigleys.postgresql.org Backpatch-through: master
* Remove buffers_backend and buffers_backend_fsync from pg_stat_checkpointerMichael Paquier2023-10-27
| | | | | | | | | | | | | | | | | | | | | | | Two attributes related to checkpointer statistics are removed in this commit: - buffers_backend, that counts the number of buffers written directly by a backend. - buffers_backend_fsync, that counts the number of times a backend had to do fsync() by its own. These are actually not checkpointer properties but backend properties. Also, pg_stat_io provides a more accurate and equivalent report of these numbers, by tracking all the I/O stats related to backends, including writes and fsyncs, so storing them in pg_stat_checkpointer was redundant. Thanks also to Robert Haas and Amit Kapila for their input. Bump catalog version. Author: Bharath Rupireddy Reviewed-by: Bertrand Drouvot, Andres Freund Discussion: https://postgr.es/m/20230210004604.mcszbscsqs3bc5nx@awork3.anarazel.de
* Migrate logical slots to the new node during an upgrade.Amit Kapila2023-10-26
| | | | | | | | | | | | | | | | | | | | | | | | While reading information from the old cluster, a list of logical slots is fetched. At the later part of upgrading, pg_upgrade revisits the list and restores slots by executing pg_create_logical_replication_slot() on the new cluster. Migration of logical replication slots is only supported when the old cluster is version 17.0 or later. If the old node has invalid slots or slots with unconsumed WAL records, the pg_upgrade fails. These checks are needed to prevent data loss. The significant advantage of this commit is that it makes it easy to continue logical replication even after upgrading the publisher node. Previously, pg_upgrade allowed copying publications to a new node. With this patch, adjusting the connection string to the new publisher will cause the apply worker on the subscriber to connect to the new publisher automatically. This enables seamless continuation of logical replication, even after an upgrade. Author: Hayato Kuroda, Hou Zhijie Reviewed-by: Peter Smith, Bharath Rupireddy, Dilip Kumar, Vignesh C, Shlok Kyal Discussion: http://postgr.es/m/TYAPR01MB58664C81887B3AF2EB6B16E3F5939@TYAPR01MB5866.jpnprd01.prod.outlook.com Discussion: http://postgr.es/m/CAA4eK1+t7xYcfa0rEQw839=b2MzsfvYDPz3xbD+ZqOdP3zpKYg@mail.gmail.com
* Doc: remove misleading info about ecpg's CONNECT/DISCONNECT DEFAULT.Tom Lane2023-10-25
| | | | | | | | | | | | | | | | | | | | | | | | | As far as I can see, ecpg has no notion of a "default" open connection. You can do "CONNECT TO DEFAULT" but that just specifies letting libpq use all its default connection parameters --- the resulting connection is not special subsequently. In particular, SET CONNECTION = DEFAULT and DISCONNECT DEFAULT simply act on a connection named DEFAULT, if you've made one; they do not have special lookup rules. But the documentation of these commands makes it look like they do. Simplest fix, I think, is just to remove the paras suggesting that DEFAULT is special here. Also, SET CONNECTION *does* have one special lookup rule, which is that it recognizes CURRENT as an alias for the currently selected connection. SET CONNECTION = CURRENT is a no-op, so it's pretty useless, but nonetheless it does something different from selecting a connection by name; so we'd better document it. Per report from Sylvain Frandaz. Back-patch to all supported versions. Discussion: https://postgr.es/m/169824721149.1769274.1553568436817652238@wrigleys.postgresql.org
* Doc fix: Interfacing Extensions to IndexesJeff Davis2023-10-25
| | | | | | | | | Refer to CREATE ACCESS METHOD rather than suggesting direct changes to pg_am. Also corrects index-specific language that predated table access methods. Discussion: https://postgr.es/m/20231025172551.685b7799455f9a6addcf5afa@sraoss.co.jp Reported-by: Yugo NAGATA <nagata@sraoss.co.jp>
* Remove useless self-joinsAlexander Korotkov2023-10-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Self Join Elimination (SJE) feature removes an inner join of a plain table to itself in the query tree if is proved that the join can be replaced with a scan without impacting the query result. Self join and inner relation are replaced with the outer in query, equivalence classes, and planner info structures. Also, inner restrictlist moves to the outer one with removing duplicated clauses. Thus, this optimization reduces the length of the range table list (this especially makes sense for partitioned relations), reduces the number of restriction clauses === selectivity estimations, and potentially can improve total planner prediction for the query. The SJE proof is based on innerrel_is_unique machinery. We can remove a self-join when for each outer row: 1. At most one inner row matches the join clause. 2. Each matched inner row must be (physically) the same row as the outer one. In this patch we use the next approach to identify a self-join: 1. Collect all merge-joinable join quals which look like a.x = b.x 2. Add to the list above the baseretrictinfo of the inner table. 3. Check innerrel_is_unique() for the qual list. If it returns false, skip this pair of joining tables. 4. Check uniqueness, proved by the baserestrictinfo clauses. To prove the possibility of self-join elimination inner and outer clauses must have an exact match. The relation replacement procedure is not trivial and it is partly combined with the one, used to remove useless left joins. Tests, covering this feature, were added to join.sql. Some regression tests changed due to self-join removal logic. Discussion: https://postgr.es/m/flat/64486b0b-0404-e39e-322d-0801154901f3%40postgrespro.ru Author: Andrey Lepikhov, Alexander Kuzmenkov Reviewed-by: Tom Lane, Robert Haas, Andres Freund, Simon Riggs, Jonathan S. Katz Reviewed-by: David Rowley, Thomas Munro, Konstantin Knizhnik, Heikki Linnakangas Reviewed-by: Hywel Carver, Laurenz Albe, Ronan Dunklau, vignesh C, Zhihong Yu Reviewed-by: Greg Stark, Jaime Casanova, Michał Kłeczek, Alena Rybakina Reviewed-by: Alexander Korotkov
* doc: Fix some typos and grammarMichael Paquier2023-10-25
| | | | | | | Author: Ekaterina Kiryanova, Elena Indrupskaya, Oleg Sibiryakov, Maxim Yablokov Discussion: https://postgr.es/m/7aad518b-3e6d-47f3-9184-b1d69cb412e7@postgrespro.ru Backpatch-through: 11
* Reword memory terminology for PQresultMemorySizeDaniel Gustafsson2023-10-24
| | | | | | | | | | | | | Rather than using the generic word "space" we might as well use "memory" since that's precisely what we're dealing with here. This was extracted from a larger patch around terminology changes where the remaining hunks were rejected. Author: Gurjeet Singh <gurjeet@singh.im> Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/CABwTF4UHO_NtcsOL6_XZfnpKg_0XBFKa7B-7_x5zs3MRZm3-Tg@mail.gmail.com
* Doc: indexUnchanged is strictly a hint.Peter Geoghegan2023-10-24
| | | | | | | | | | | | | | Clearly spell out the limitations of aminsert()'s indexUnchanged hinting mechanism in the index AM documentation. Oversight in commit 9dc718bd, which added the "logically unchanged index" hint (which is used to trigger bottom-up index deletion). Author: Peter Geoghegan <pg@bowt.ie> Reported-By: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/CAH2-WzmU_BQ=-H9L+bxTSMQBqHMjp1DSwGypvL0gKs+dTOfkKg@mail.gmail.com Backpatch: 14-, where indexUnchanged hinting was introduced.
* doc: Improve example query related to pg_wait_eventsMichael Paquier2023-10-24
| | | | | Author: Pavel Luzanov Discussion: https://postgr.es/m/4f79be75-7e30-4817-b0da-4a691ea5427f@postgrespro.ru
* doc: Fix some grammar and inconsistent tagsMichael Paquier2023-10-23
| | | | | | Author: Ekaterina Kiryanova, Elena Indrupskaya, Oleg Sibiryakov, Maxim Yablokov Discussion: https://postgr.es/m/4c2a430b-32e2-44e2-aeca-03b7db6824e4@postgrespro.ru
* Doc: update CREATE OPERATOR's statement about => as an operator.Tom Lane2023-10-20
| | | | | | | This doco said that use of => as an operator "is deprecated". It's been fully disallowed since 865f14a2d back in 9.5, but evidently that commit missed updating this statement. Do so now.
* Extend ALTER OPERATOR to allow setting more optimization attributes.Tom Lane2023-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the COMMUTATOR, NEGATOR, MERGES, and HASHES attributes to be set by ALTER OPERATOR. However, we don't allow COMMUTATOR/NEGATOR to be changed once set, nor allow the MERGES/HASHES flags to be unset once set. Changes like that might invalidate plans already made, and dealing with the consequences seems like more trouble than it's worth. The main use-case we foresee for this is to allow addition of missed properties in extension update scripts, such as extending an existing operator to support hashing. So only transitions from not-set to set states seem very useful. This patch also causes us to reject some incorrect cases that formerly resulted in inconsistent catalog state, such as trying to set the commutator of an operator to be some other operator that already has a (different) commutator. While at it, move the InvokeObjectPostCreateHook call for CREATE OPERATOR to not occur until after we've fixed up commutator or negator links as needed. The previous ordering could only be justified by thinking of the OperatorUpd call as a kind of ALTER OPERATOR step; but we don't call InvokeObjectPostAlterHook therein. It seems better to let the hook see the final state of the operator object. In the documentation, move the discussion of how to establish commutator pairs from xoper.sgml to the CREATE OPERATOR ref page. Tommy Pavlicek, reviewed and editorialized a bit by me Discussion: https://postgr.es/m/CAEhP-W-vGVzf4udhR5M8Bdv88UYnPrhoSkj3ieR3QNrsGQoqdg@mail.gmail.com
* pg_stat_statements: Add local_blk_{read|write}_timeMichael Paquier2023-10-19
| | | | | | | | | | | | | | This commit adds to pg_stat_statements the two new fields for local buffers introduced by 295c36c0c1fa, adding the time spent to read and write these blocks. These are similar to what is done for temp and shared blocks. This information available only if track_io_timing is enabled. Like for 5a3423ad8ee17, no version bump is required in the module. Author: Nazir Bilal Yavuz Reviewed-by: Robert Haas, Melanie Plageman Discussion: https://postgr.es/m/CAN55FZ19Ss279mZuqGbuUNxka0iPbLgYuOQXqAKewrjNrp27VA@mail.gmail.com
* Add local_blk_{read|write}_time I/O timing statistics for local blocksMichael Paquier2023-10-19
| | | | | | | | | | | | | There was no I/O timing statistics for counting read and write timings on local blocks, contrary to the counterparts for temp and shared blocks. This information is available when track_io_timing is enabled. The output of EXPLAIN is updated to show this information. An update of pg_stat_statements is planned next. Author: Nazir Bilal Yavuz Reviewed-by: Robert Haas, Melanie Plageman Discussion: https://postgr.es/m/CAN55FZ19Ss279mZuqGbuUNxka0iPbLgYuOQXqAKewrjNrp27VA@mail.gmail.com
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-11 04:45:05 +0000