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* Allow table AM tuple_insert() method to return the different slotAlexander Korotkov2024-03-21
| | | | | | | | | | | This allows table AM to return a native tuple slot even if VirtualTupleTableSlot is given as an input. Native tuple slots have knowledge about system attributes, which could be accessed in the future. table_multi_insert() method already can modify the input 'slots' array. Discussion: https://postgr.es/m/CAPpHfdurb9ycV8udYqM%3Do0sPS66PJ4RCBM1g-bBpvzUfogY0EA%40mail.gmail.com Reviewed-by: Matthias van de Meent, Mark Dilger, Pavel Borisov Reviewed-by: Nikita Malakhov, Japin Li
* Allow table AM to store complex data structures in rd_amcacheAlexander Korotkov2024-03-21
| | | | | | | | | | | The new table AM method free_rd_amcache is responsible for freeing all the memory related to rd_amcache and setting free_rd_amcache to NULL. If the new method is not specified, we still assume rd_amcache to be a single chunk of memory, which could be just pfree'd. Discussion: https://postgr.es/m/CAPpHfdurb9ycV8udYqM%3Do0sPS66PJ4RCBM1g-bBpvzUfogY0EA%40mail.gmail.com Reviewed-by: Matthias van de Meent, Mark Dilger, Pavel Borisov Reviewed-by: Nikita Malakhov, Japin Li
* Explicitly require password for SCRAM exchangeDaniel Gustafsson2024-03-21
| | | | | | | | | | | | | | This refactors the SASL init flow to set password_needed on the two SCRAM exchanges currently supported. The code already required this but was set up in such a way that all SASL exchanges required using a password, a restriction which may not hold for all exchanges (the example at hand being the proposed OAuthbearer exchange). This was extracted from a larger patchset to introduce OAuthBearer authentication and authorization. Author: Jacob Champion <jacob.champion@enterprisedb.com> Discussion: https://postgr.es/m/d1b467a78e0e36ed85a09adf979d04cf124a9d4b.camel@vmware.com
* Refactor SASL exchange to return tri-state statusDaniel Gustafsson2024-03-21
| | | | | | | | | | | | | | The SASL exchange callback returned state in to output variables: done and success. This refactors that logic by introducing a new return variable of type SASLStatus which makes the code easier to read and understand, and prepares for future SASL exchanges which operate asynchronously. This was extracted from a larger patchset to introduce OAuthBearer authentication and authorization. Author: Jacob Champion <jacob.champion@enterprisedb.com> Discussion: https://postgr.es/m/d1b467a78e0e36ed85a09adf979d04cf124a9d4b.camel@vmware.com
* Temporarily install debugging in partition_prune testDavid Rowley2024-03-21
| | | | | | | | | | | | | | | | | | | The buildfarm animal parula has been sporadically failing in the partition_prune test for the past week or so. It appears like an auto-vacuum or auto-analyze has run on one of the partitions of the "ab" table, causing the plan to change. This is unexpected as the table is empty. Here we install some telemetry to find out if this is the case. This also joins in pg_index to see if something has gone wrong with the index which could result in the planner being unable to use that index. We can revert this once we've figured out the cause of the plan instability. Reported-by: Tom Lane Investigation-by: Tom Lane Discussion: https://postgr.es/m/4009739.1710878318%40sss.pgh.pa.us
* Add SQL/JSON query functionsAmit Langote2024-03-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces the following SQL/JSON functions for querying JSON data using jsonpath expressions: JSON_EXISTS(), which can be used to apply a jsonpath expression to a JSON value to check if it yields any values. JSON_QUERY(), which can be used to to apply a jsonpath expression to a JSON value to get a JSON object, an array, or a string. There are various options to control whether multi-value result uses array wrappers and whether the singleton scalar strings are quoted or not. JSON_VALUE(), which can be used to apply a jsonpath expression to a JSON value to return a single scalar value, producing an error if it multiple values are matched. Both JSON_VALUE() and JSON_QUERY() functions have options for handling EMPTY and ERROR conditions, which can be used to specify the behavior when no values are matched and when an error occurs during jsonpath evaluation, respectively. Author: Nikita Glukhov <n.gluhov@postgrespro.ru> Author: Teodor Sigaev <teodor@sigaev.ru> Author: Oleg Bartunov <obartunov@gmail.com> Author: Alexander Korotkov <aekorotkov@gmail.com> Author: Andrew Dunstan <andrew@dunslane.net> Author: Amit Langote <amitlangote09@gmail.com> Author: Peter Eisentraut <peter@eisentraut.org> Author: Jian He <jian.universality@gmail.com> Reviewers have included (in no particular order): Andres Freund, Alexander Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu, Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby, Álvaro Herrera, Jian He, Anton A. Melnikov, Nikita Malakhov, Peter Eisentraut, Tomas Vondra Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru Discussion: https://postgr.es/m/20220616233130.rparivafipt6doj3@alap3.anarazel.de Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org Discussion: https://postgr.es/m/CA+HiwqHROpf9e644D8BRqYvaAPmgBZVup-xKMDPk-nd4EpgzHw@mail.gmail.com Discussion: https://postgr.es/m/CA+HiwqE4XTdfb1nW=Ojoy_tQSRhYt-q_kb6i5d4xcKyrLC1Nbg@mail.gmail.com
* Allow dbname to be written as part of connstring via pg_basebackup's -R option.Amit Kapila2024-03-21
| | | | | | | | | | | | | | | | Commit cca97ce6a665 allowed dbname in pg_basebackup connstring and in this commit we allow it to be written in postgresql.auto.conf when -R option is used. The database name in the connection string will be used by the logical replication slot synchronization on standby. The dbname will be recorded only if specified explicitly in the connection string or environment variable. Masahiko Sawada hasn't reviewed the code in detail but endorsed the idea. Author: Vignesh C, Kuroda Hayato Reviewed-by: Amit Kapila Discussion: https://postgr.es/m/CAB8KJ=hdKdg+UeXhReeHpHA6N6v3e0qFF+ZsPFHk9_ThWKf=2A@mail.gmail.com
* Add TIDStore, to store sets of TIDs (ItemPointerData) efficiently.Masahiko Sawada2024-03-21
| | | | | | | | | | | | | | | | | | | | | TIDStore is a data structure designed to efficiently store large sets of TIDs. For TID storage, it employs a radix tree, where the key is a block number, and the value is a bitmap representing offset numbers. The TIDStore can be created on a DSA area and used by multiple backend processes simultaneously. There are potential future users such as tidbitmap.c, though it's very likely the interface will need to evolve as we come to understand the needs of different kinds of users. For example, we can support updating the offset bitmap of existing values. Currently, the TIDStore is not used for anything yet, aside from the test code. But an upcoming patch will use it. This includes a unit test module, in src/test/modules/test_tidstore. Co-authored-by: John Naylor Discussion: https://postgr.es/m/CAD21AoAfOZvmfR0j8VmZorZjL7RhTiQdVttNuC4W-Shdc2a-AA%40mail.gmail.com
* Un-break genbki.pl's error reporting capabilities.Tom Lane2024-03-20
| | | | | | | | | | | | | | | | | | | | | This essentially reverts commit 69eb643b2, which added a fast path in Catalog::ParseData, but neglected to preserve the behavior of adding a line_number field in each hash. That makes it impossible for genbki.pl to provide any localization of error reports, which is bad enough; but actually the affected error reports failed entirely, producing useless bleats like "use of undefined value in sprintf". 69eb643b2 claimed to get a 15% speedup, but I'm not sure I believe that: the time to rebuild the bki files changes by less than 1% for me. In any case, making debugging of mistakes in .dat files more difficult would not be justified by even an order of magnitude speedup here; it's just not that big a chunk of the total build time. Per report from David Wheeler. Although it's also broken in v16, I don't think this is worth a back-patch, since we're very unlikely to touch the v16 catalog data again. Discussion: https://postgr.es/m/19238.1710953049@sss.pgh.pa.us
* Add to_regtypemod function to extract typemod from a string type name.Tom Lane2024-03-20
| | | | | | | | | | | | | | | | | | | | | | | In combination with to_regtype, this allows converting a string to the "canonicalized" form emitted by format_type. That usage requires parsing the string twice, which is slightly annoying but not really too expensive. We considered alternatives such as returning a record type, but that way was notationally uglier than this, and possibly less flexible. Like to_regtype(), we'd rather that this return NULL for any bad input, but the underlying type-parsing logic isn't yet capable of not throwing syntax errors. Adjust the documentation for both functions to point that out. In passing, fix up a couple of nearby entries in the System Catalog Information Functions table that had not gotten the word about our since-v13 convention for displaying function usage examples. David Wheeler and Erik Wienhold, reviewed by Pavel Stehule, Jim Jones, and others. Discussion: https://postgr.es/m/DF2324CA-2673-4ABE-B382-26B5770B6AA3@justatheory.com
* Avoid overflow in MaybeRemoveOldWalSummaries().Nathan Bossart2024-03-20
| | | | | | | | | | This commit limits the maximum value of wal_summary_keep_time to INT_MAX / SECS_PER_MINUTE to avoid overflow when it is converted to seconds. In passing, use the HOURS_PER_DAY, MINS_PER_HOUR, and SECS_PER_MINUTE macros in the code for this GUC instead of hard- coding those values. Discussion: https://postgr.es/m/20240314210010.GA3056455%40nathanxps13
* Inline basic UTF-8 functions.Jeff Davis2024-03-20
| | | | | | | | Shows a measurable speedup when processing UTF-8 data, such as with the new builtin collation provider. Discussion: https://postgr.es/m/163f4e2190cdf67f67016044e503c5004547e5a9.camel@j-davis.com Reviewed-by: Peter Eisentraut
* Revert "Temporary patch to help debug pg_walsummary test failures."Nathan Bossart2024-03-20
| | | | | | | | | | Thanks to commits ea18eb7d62, b6ee30ec08, and 19a829a327, the 002_blocks.pl test now consistently passes, so we can remove this temporary debugging code. This reverts commit 5ddf9973477729cf161b4ad0a1efd52f4fea9c88. Discussion: https://postgr.es/m/20240314210010.GA3056455%40nathanxps13
* Review wording on tablespaces w.r.t. partitioned tablesAlvaro Herrera2024-03-20
| | | | | | | | | | | Remove a redundant comment, and document pg_class.reltablespace properly in catalogs.sgml. After commits a36c84c3e4a9, 87259588d0ab and others. Backpatch to 12. Discussion: https://postgr.es/m/202403191013.w2kr7wqlamqz@alvherre.pgsql
* Rework lwlocknames.txt to become lwlocklist.hAlvaro Herrera2024-03-20
| | | | | | | | | | | | | | This way, we can fold the list of lock names to occur in BuiltinTrancheNames instead of having its own separate array. This saves two lines of code in GetLWTrancheName and some space in BuiltinTrancheNames, as foreseen in commit 74a730631065, as well as removing the need for a separate lwlocknames.c file. We still have to build lwlocknames.h using Perl code, which initially I wanted to avoid, but it gives us the chance to cross-check wait_event_names.txt. Discussion: https://postgr.es/m/202401231025.gbv4nnte5fmm@alvherre.pgsql
* Catalog domain not-null constraintsPeter Eisentraut2024-03-20
| | | | | | | | | | This applies the explicit catalog representation of not-null constraints introduced by b0e96f3119 for table constraints also to domain not-null constraints. Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Reviewed-by: jian he <jian.universality@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/9ec24d7b-633d-463a-84c6-7acff769c9e8%40eisentraut.org
* Remove unused PruneState member relHeikki Linnakangas2024-03-20
| | | | | | | PruneState->rel is no longer being used, so just remove it. Author: Melanie Plageman <melanieplageman@gmail.com> Discussion: https://www.postgresql.org/message-id/20240320013602.6sypr4cx6sefpemg@liskov
* Reorganize heap_page_prune() function commentHeikki Linnakangas2024-03-20
| | | | | | | | heap_page_prune()'s function header comment didn't explain the parameters in the same order they appear in the function. Fix that. Author: Melanie Plageman <melanieplageman@gmail.com> Discussion: https://www.postgresql.org/message-id/20240320013602.6sypr4cx6sefpemg@liskov
* Add "--exclude-extension" to pg_dump's options.Dean Rasheed2024-03-20
| | | | | | | | | | | This option (or equivalently specifying "exclude extension pattern" in a filter file) allows extensions matching the specified pattern to be excluded from the dump. Ayush Vatsa, reviewed by Junwang Zhao, Dean Rasheed, and Daniel Gustafsson. Discussion: https://postgr.es/m/CACX+KaP=VgVy9h-EUh598DTu+-fNr1jyEmpghC8rRp9s=w33Kg@mail.gmail.com
* Remove assertions that some compiler say are tautologicalHeikki Linnakangas2024-03-20
| | | | | | | | | | | | | | | | | To avoid the compiler warnings: launch_backend.c:211:39: warning: comparison of constant 16 with expression of type 'BackendType' (aka 'enum BackendType') is always true [-Wtautological-constant-out-of-range-compare] launch_backend.c:233:39: warning: comparison of constant 16 with expression of type 'BackendType' (aka 'enum BackendType') is always true [-Wtautological-constant-out-of-range-compare] The point of the assertions was to fail more explicitly if someone adds a new BackendType to the end of the enum, but forgets to add it to the child_process_kinds array. It was a pretty weak assertion to begin with, because it wouldn't catch if you added a new BackendType in the middle of the enum. So let's just remove it. Per buildfarm member ayu and a few others, spotted by Tom Lane. Discussion: https://www.postgresql.org/message-id/4119680.1710913067@sss.pgh.pa.us
* Add tests for domain-related information schema viewsPeter Eisentraut2024-03-20
| | | | | Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Discussion: https://www.postgresql.org/message-id/flat/9ec24d7b-633d-463a-84c6-7acff769c9e8%40eisentraut.org
* Support C.UTF-8 locale in the new builtin collation provider.Jeff Davis2024-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The builtin C.UTF-8 locale has similar semantics to the libc locale of the same name. That is, code point sort order (fast, memcmp-based) combined with Unicode semantics for character operations such as pattern matching, regular expressions, and LOWER()/INITCAP()/UPPER(). The character semantics are based on Unicode simple case mappings. The builtin provider's C.UTF-8 offers several important advantages over libc: * faster sorting -- benefits from additional optimizations such as abbreviated keys and varstrfastcmp_c * faster case conversion, e.g. LOWER(), at least compared with some libc implementations * available on all platforms with identical semantics, and the semantics are stable, testable, and documentable within a given Postgres major version Being based on memcmp, the builtin C.UTF-8 locale does not offer natural language sort order. But it is an improvement for most use cases that might otherwise use libc's "C.UTF-8" locale, as well as many use cases that use libc's "C" locale. Discussion: https://postgr.es/m/ff4c2f2f9c8fc7ca27c1c24ae37ecaeaeaff6b53.camel%40j-davis.com Reviewed-by: Daniel Vérité, Peter Eisentraut, Jeremy Schneider
* Improve EXPLAIN's display of SubPlan nodes and output parameters.Tom Lane2024-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Historically we've printed SubPlan expression nodes as "(SubPlan N)", which is pretty uninformative. Trying to reproduce the original SQL for the subquery is still as impractical as before, and would be mighty verbose as well. However, we can still do better than that. Displaying the "testexpr" when present, and adding a keyword to indicate the SubLinkType, goes a long way toward showing what's really going on. In addition, this patch gets rid of EXPLAIN's use of "$n" to represent subplan and initplan output Params. Instead we now print "(SubPlan N).colX" or "(InitPlan N).colX" to represent the X'th output column of that subplan. This eliminates confusion with the use of "$n" to represent PARAM_EXTERN Params, and it's useful for the first part of this change because it eliminates needing some other indication of which subplan is referenced by a SubPlan that has a testexpr. In passing, this adds simple regression test coverage of the ROWCOMPARE_SUBLINK code paths, which were entirely unburdened by testing before. Tom Lane and Dean Rasheed, reviewed by Aleksander Alekseev. Thanks to Chantal Keller for raising the question of whether this area couldn't be improved. Discussion: https://postgr.es/m/2838538.1705692747@sss.pgh.pa.us
* Inline pg_popcount{32,64} into pg_popcount().Nathan Bossart2024-03-19
| | | | | | | | | | | | | | On some systems, calls to pg_popcount{32,64} are indirected through a function pointer. This commit converts pg_popcount() to a function pointer on those systems so that we can inline the appropriate pg_popcount{32,64} implementations into each of the pg_popcount() implementations. Since pg_popcount() may call pg_popcount{32,64} several times, this can significantly improve its performance. Suggested-by: David Rowley Reviewed-by: David Rowley Discussion: https://postgr.es/m/CAApHDvrb7MJRB6JuKLDEY2x_LKdFHwVbogpjZBCX547i5%2BrXOQ%40mail.gmail.com
* Postpone reparameterization of paths until create_plan().Tom Lane2024-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When considering nestloop paths for individual partitions within a partitionwise join, if the inner path is parameterized, it is parameterized by the topmost parent of the outer rel, not the corresponding outer rel itself. Therefore, we need to translate the parameterization so that the inner path is parameterized by the corresponding outer rel. Up to now, we did this while generating join paths. However, that's problematic because we must also translate some expressions that are shared across all paths for a relation, such as restriction clauses (kept in the RelOptInfo and/or IndexOptInfo) and TableSampleClauses (kept in the RangeTblEntry). The existing code fails to translate these at all, leading to wrong answers, odd failures such as "variable not found in subplan target list", or executor crashes. But we can't modify them during path generation, because that would break things if we end up choosing some non-partitioned-join path. So this patch postpones reparameterization of the inner path until createplan.c, where it is safe to modify the referenced RangeTblEntry, RelOptInfo or IndexOptInfo, because we have made a final choice of which Path to use. We do still have to check during path generation that the reparameterization will be possible. So we introduce a new function path_is_reparameterizable_by_child() to detect that. The duplication between path_is_reparameterizable_by_child() and reparameterize_path_by_child() is a bit annoying, but there seems no other good answer. A small benefit is that we can avoid building useless reparameterized trees in cases where a non-partitioned join is ultimately chosen. Also, reparameterize_path_by_child() can now be allowed to scribble on the input paths, saving a few cycles. This fix repairs the same problems previously addressed in the back branches by commits 62f120203 et al. Richard Guo, reviewed at various times by Ashutosh Bapat, Andrei Lepikhov, Alena Rybakina, Robert Haas, and myself Discussion: https://postgr.es/m/CAMbWs496+N=UAjOc=rcD3P7B6oJe4rZw08e_TZRUsWbPxZW3Tw@mail.gmail.com
* gen_node_support.pl: Mark location fields as type alias ParseLocPeter Eisentraut2024-03-19
| | | | | | | | | | Instead of the rather ugly type=int + name ~= location$, we now have a marker type for offset pointers or sizes that are only relevant when a query text is included, which decreases the complexity required in gen_node_support.pl for handling these values. Author: Matthias van de Meent <boekewurm+postgres@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/CAEze2WgrCiR3JZmWyB0YTc8HV7ewRdx13j0CqD6mVkYAW+SFGQ@mail.gmail.com
* pg_upgrade: run all data type checks per connectionDaniel Gustafsson2024-03-19
| | | | | | | | | | | | | The checks for data type usage were each connecting to all databases in the cluster and running their query. On clusters which have a lot of databases this can become unnecessarily expensive. This moves the checks to run in a single connection instead to minimize setup and teardown overhead. Reviewed-by: Nathan Bossart <nathandbossart@gmail.com> Reviewed-by: Justin Pryzby <pryzby@telsasoft.com> Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Discussion: https://postgr.es/m/BB4C76F-D416-4F9F-949E-DBE950D37787@yesql.se
* Use half-open interval notation in without_overlaps testsPeter Eisentraut2024-03-19
| | | | | | | This way, the input literals match the output in any error messages. Author: Paul A. Jungwirth <pj@illuminatedcomputing.com> Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
* Fix misleading commentsPeter Eisentraut2024-03-19
| | | | To match code changes in 229fb58d4f.
* Use daterange and YMD in without_overlaps tests instead of tsrange.Peter Eisentraut2024-03-19
| | | | | | | | This makes things a lot easier to read, especially when we get to the FOREIGN KEY tests later. Author: Paul A. Jungwirth <pj@illuminatedcomputing.com> Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
* Add some UUID support functionsPeter Eisentraut2024-03-19
| | | | | | | | | | Add uuid_extract_timestamp() and uuid_extract_version(). Author: Andrey Borodin Reviewed-by: Sergey Prokhorenko, Kirk Wolak, Przemysław Sztoch Reviewed-by: Nikolay Samokhvalov, Jelte Fennema-Nio, Aleksander Alekseev Reviewed-by: Peter Eisentraut, Chris Travers, Lukas Fittl Discussion: https://postgr.es/m/CAAhFRxitJv%3DyoGnXUgeLB_O%2BM7J2BJAmb5jqAT9gZ3bij3uLDA%40mail.gmail.com
* Activate perlcritic InputOutput::RequireCheckedSyscalls and fix resulting ↵Peter Eisentraut2024-03-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | warnings This checks that certain I/O-related Perl functions properly check their return value. Some parts of the PostgreSQL code had been a bit sloppy about that. The new perlcritic warnings are fixed here. I didn't design any beautiful error messages, mostly just used "or die $!", which mostly matches existing code, and also this is developer-level code, so having the system error plus source code reference should be ok. Initially, we only activate this check for a subset of what the perlcritic check would warn about. The effective list is chmod flock open read rename seek symlink system The initial set of functions is picked because most existing code already checked the return value of those, so any omissions are probably unintended, or because it seems important for test correctness. The actual perlcritic configuration is written as an exclude list. That seems better so that we are clear on what we are currently not checking. Maybe future patches want to investigate checking some of the other functions. (In principle, we might eventually want to check all of them, but since this is test and build support code, not production code, there are probably some reasonable compromises to be made.) Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Discussion: https://www.postgresql.org/message-id/flat/88b7d4f2-46d9-4cc7-b1f7-613c90f9a76a%40eisentraut.org
* Update src/common/unicode/README.Jeff Davis2024-03-18
| | | | | Change the test description to include the case mapping test. Oversight in 5c40364dd6.
* Fix another warning, introduced by 846311051e.Jeff Davis2024-03-18
| | | | | Discussion: https://postgr.es/m/3703896.1710799495@sss.pgh.pa.us Reported-by: Tom Lane
* Address more review comments on commit 2d819a08a1.Jeff Davis2024-03-18
| | | | | | | | | | | | | Based on comments from Peter Eisentraut. * Document CREATE DATABASE ... BUILTIN_LOCALE. * Determine required encoding based on locale name for CREATE COLLATION. Use -1 for "C" (requires catversion bump). * initdb output fixups. * Make ctype_is_c a constant true for now. * Fixups to ICU 010_create_database.pl test. Discussion: https://postgr.es/m/4135cf11-206d-40ed-96c0-9363c1232379@eisentraut.org
* dblink/isolationtester/fe_utils: Use new cancel APIAlvaro Herrera2024-03-18
| | | | | | | | | | | | | Commit 61461a300c1c introduced new functions to libpq for cancelling queries. This replaces the usage of the old ones in parts of the codebase with these newer ones. This specifically leaves out changes to psql and pgbench, as those would need a much larger refactor to be able to call them due to the new functions not being signal-safe; and also postgres_fdw, because the original code there is not clear to me (Álvaro) and not fully tested. Author: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAGECzQT_VgOWWENUqvUV9xQmbaCyXjtRRAYO8W07oqashk_N+g@mail.gmail.com
* Fix unreachable code warning from commit 2d819a08a1.Jeff Davis2024-03-18
| | | | | | | Found by Coverity. Discussion: https://postgr.es/m/3422201.1710711993@sss.pgh.pa.us Reported-by: Tom Lane
* Add missing source files to nls.mkPeter Eisentraut2024-03-18
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* Put libpq_pipeline cancel test backAlvaro Herrera2024-03-18
| | | | | | | | | | I disabled it in cc6e64afda53 because it was unstable; hopefully the changes here make it more stable. (Jelte proposed to submit the queries using simple query protocol, but I chose to instead make the monitor connection wait until the PgSleep wait event is seen. This is probably not a terribly meaningful increase in coverage ...) Discussion: https://postgr.es/m/CAGECzQRQh_5tSy+5cndgv08eNJ2O0Zpwn2YddJtSsmC=Wpy1BQ@mail.gmail.com
* Fix EXPLAIN Bitmap heap scan to count pages with no visible tuplesHeikki Linnakangas2024-03-18
| | | | | | | | | | | | | | | | | Previously, bitmap heap scans only counted lossy and exact pages for explain when there was at least one visible tuple on the page. heapam_scan_bitmap_next_block() returned true only if there was a "valid" page with tuples to be processed. However, the lossy and exact page counters in EXPLAIN should count the number of pages represented in a lossy or non-lossy way in the constructed bitmap, regardless of whether or not the pages ultimately contained visible tuples. Backpatch to all supported versions. Author: Melanie Plageman Discussion: https://www.postgresql.org/message-id/CAAKRu_ZwCwWFeL_H3ia26bP2e7HiKLWt0ZmGXPVwPO6uXq0vaA@mail.gmail.com Discussion: https://www.postgresql.org/message-id/CAAKRu_bxrXeZ2rCnY8LyeC2Ls88KpjWrQ%2BopUrXDRXdcfwFZGA@mail.gmail.com
* Add some const decorationsPeter Eisentraut2024-03-18
| | | | Discussion: https://www.postgresql.org/message-id/flat/5ac50071-f2ed-4ace-a8fd-b892cffd33eb@www.fastmail.com
* Move code for backend startup to separate fileHeikki Linnakangas2024-03-18
| | | | | | | | This is code that runs in the backend process after forking, rather than postmaster. Move it out of postmaster.c for clarity. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi
* Refactor postmaster child process launchingHeikki Linnakangas2024-03-18
| | | | | | | | | | | | | | | | Introduce new postmaster_child_launch() function that deals with the differences in EXEC_BACKEND mode. Refactor the mechanism of passing information from the parent to child process. Instead of using different command-line arguments when launching the child process in EXEC_BACKEND mode, pass a variable-length blob of startup data along with all the global variables. The contents of that blob depend on the kind of child process being launched. In !EXEC_BACKEND mode, we use the same blob, but it's simply inherited from the parent to child process. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi
* Move some functions from postmaster.c to a new source fileHeikki Linnakangas2024-03-18
| | | | | | | | | This just moves the functions, with no other changes, to make the next commits smaller and easier to review. The moved functions are related to launching postmaster child processes in EXEC_BACKEND mode. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi
* Split registration of Win32 deadchild callback to separate functionHeikki Linnakangas2024-03-18
| | | | | | | | | | The next commit will move the internal_forkexec() function to a different source file, but it makes sense to keep all the code related to the win32 waitpid() emulation in postmaster.c. Split it off to a separate function now, to make the next commit more mechanical. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi
* Remove references to backup_fs_hot() in Cluster.pmMichael Paquier2024-03-18
| | | | | | | This routine has been removed in 39969e2a1e4d with the exclusive backup mode but there were still references to it. Issue noticed while working on 071e3ad59d6f.
* Initialize variables to placate compiler.Nathan Bossart2024-03-17
| | | | | | | | | Since commit 012460ee93, some compilers have been warning that a couple of variables may be used uninitialized. There doesn't appear to be any actual risk, so let's just initialize these variables to 0 to silence the compiler warnings. Discussion: https://postgr.es/m/20240317192927.GA3978212%40nathanxps13
* Support json_errdetail in FRONTEND codeDaniel Gustafsson2024-03-17
| | | | | | | | | | | | | Allocate memory for the error message inside memory owned by the JsonLexContext and move responsibility away from the caller for freeing it. This means that we can partially revert b44669b2ca as this is now safe to use in FRONTEND code. The motivation for this comes from the OAuth and incremental JSON patchsets but it also adds value on its own. Author: Jacob Champion <jacob.champion@enterprisedb.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/CAOYmi+mWdTd6ujtyF7MsvXvk7ToLRVG_tYAcaGbQLvf=N4KrQw@mail.gmail.com
* Mark hash_corrupted() as pg_attribute_noreturn.Tom Lane2024-03-17
| | | | | | Coverity started complaining about this after cc5ef90ed. The code's not really different from before, but might as well clarify its intent.
* Add RETURNING support to MERGE.Dean Rasheed2024-03-17
| | | | | | | | | | | | | | | | | | | | | | | | | | This allows a RETURNING clause to be appended to a MERGE query, to return values based on each row inserted, updated, or deleted. As with plain INSERT, UPDATE, and DELETE commands, the returned values are based on the new contents of the target table for INSERT and UPDATE actions, and on its old contents for DELETE actions. Values from the source relation may also be returned. As with INSERT/UPDATE/DELETE, the output of MERGE ... RETURNING may be used as the source relation for other operations such as WITH queries and COPY commands. Additionally, a special function merge_action() is provided, which returns 'INSERT', 'UPDATE', or 'DELETE', depending on the action executed for each row. The merge_action() function can be used anywhere in the RETURNING list, including in arbitrary expressions and subqueries, but it is an error to use it anywhere outside of a MERGE query's RETURNING list. Dean Rasheed, reviewed by Isaac Morland, Vik Fearing, Alvaro Herrera, Gurjeet Singh, Jian He, Jeff Davis, Merlin Moncure, Peter Eisentraut, and Wolfgang Walther. Discussion: http://postgr.es/m/CAEZATCWePEGQR5LBn-vD6SfeLZafzEm2Qy_L_Oky2=qw2w3Pzg@mail.gmail.com