We are going to configure logical replication between two different major versions of PostgreSQL (10 and 11), and of course, after you have this working, it is only a matter of performing an application failover into the database with the newer version. (CVE-2020-25695), Fix usage of complex connection-string parameters in pg_dump, pg_restore, clusterdb, reindexdb, and vacuumdb (Tom Lane), The -d parameter of pg_dump and pg_restore, or the --maintenance-db parameter of the other programs mentioned, can be a connection string containing multiple connection parameters rather than just a database name. \gset without a prefix would overwrite whatever variables the server told it to. Previously, if a page range was desummarized at just the wrong time, an index scan might falsely raise an error indicating index corruption. Allow polygons to be indexed with SP-GiST (Nikita Glukhov, Alexander Korotkov), Allow SP-GiST to use lossy representation of leaf keys (Teodor Sigaev, Heikki Linnakangas, Alexander Korotkov, Nikita Glukhov), Improve selection of the most common values for statistics (Jeff Janes, Dean Rasheed). However, if both interpretations are feasible, the column interpretation was always chosen, leading to surprising results if the user intended the function interpretation. As side note: are you aware that before Postgres 10, the version numbering was a bit different? Many prebuilt installers do this step automatically. Prior Releases. rev2023.5.1.43405. Avoid misoptimization of subquery qualifications that reference apparently-constant grouping columns (Tom Lane). georgia forensic audit pulitzer; pelonis box fan manual This allows psql's default pager to be specified as a separate environment variable from the pager for other applications. Channel binding is intended to prevent man-in-the-middle attacks, but SCRAM cannot prevent them unless it can be forced to be active. The above items are explained in more detail in the sections below. Previously, WAL was retained for two checkpoints. PostgreSQL: Documentation: 10: Appendix E. Release Notes PostgreSQL: Documentation: 15: Appendix E. Release Notes Add the ability to define PL/pgSQL composite-type variables as not null, constant, or with initial values (Tom Lane), Allow PL/pgSQL to handle changes to composite types (e.g., record, row) that happen between the first and later function executions in the same session (Tom Lane). Perform a database backup. Add pg_trgm function strict_word_similarity() to compute the similarity of whole words (Alexander Korotkov). Also, if any table mentioned in VACUUM uses a column list, then the ANALYZE keyword must be supplied; previously, ANALYZE was implied in such cases. Partitioning Allow the creation of partitions based on hashing a key column (Amul Sul) Support indexes on partitioned tables (lvaro Herrera, Amit Langote) The real-world impact is small, since the failure is unlikely, and if it does happen the worker would just exit and be restarted. This process will create its own temporary replication slot and copy the existing data. If your file system supports file system snapshots or copy-on-write file copies, you can use that to make a backup of the old cluster and tablespaces, though the snapshot and copies must be created simultaneously or while the database server is down. Make sure both database servers are stopped using, on Unix, e.g. pg_upgrade accepts the following command-line arguments: -b bindir. pg_dumpall's output script will now always create databases with their original locale and encoding, and hence will fail if the locale or encoding name is unknown to the destination system. This reduces the likelihood of serialization conflicts in serializable-mode transactions. Overhaul the way that initial system catalog contents are defined (John Naylor). Also, table_constraints.enforced now exists but is not yet usefully populated. Add storage parameter toast_tuple_target to control the minimum tuple length before TOAST storage will be considered (Simon Riggs). Migration to Version 11.10. Install the same extension shared object files on the new standbys that you installed in the new primary cluster. PostgreSQL13 requires smdba version 1.7.6 or later. Add Vietnamese letter handling to the unaccent extension (Dang Minh Huong, Michael Paquier), Enhance amcheck to check that each heap tuple has an index entry (Peter Geoghegan), Have adminpack use the new default file system access roles (Stephen Frost). The release notes contain the significant changes in each PostgreSQL release, with major features and migration issues listed at the top. This oversight could lead to failed to find parent tuple for heap-only tuple errors. pg_upgrade will connect to the old and new servers several times, so you might want to set authentication to peer in pg_hba.conf or use a ~/.pgpass file (see Section34.16). To learn more, see our tips on writing great answers. PostgreSQL 9.6. If you are already using PostgreSQL version 13, you do not need to perform this migration. The directory structure under the specified directories on the primary and standbys must match. Large objects are not replicated. You can also delete the old installation directories (e.g., bin, share). Notes on updating to PostgreSQL 14.3, 13.7, 12.11, 11.16, and 10.21 19.6. Upgrading a PostgreSQL Cluster - PostgreSQL Documentation If you are running Leap 15.2, use PostgreSQL 12. Speed up construction of query results (Andres Freund), Improve speed of access to system caches (Andres Freund), Add a generational memory allocator which is optimized for serial allocation/deallocation (Tomas Vondra). This is helpful for allowing user-defined aggregate functions to be optimized and to work as window functions. PostgreSQL expects the names of a table's constraints to be distinct, and likewise for the names of a domain's constraints. The default partition will store rows that don't match any of the other defined partitions, and is searched accordingly. But if some tables to be truncated on the subscriber have foreign-key links to tables that are not part of the same (or any) subscription, then the application of the truncate action on the subscriber will fail. Subscribers pull data from the publications they subscribe to. This speeds access to partitioned tables with many partitions. This allows workers to reduce returned results and use targeted index scans. An attacker having permission to create non-temporary SQL objects could parlay this leak to execute arbitrary SQL code as a superuser. Creation of a trigger on a partitioned table automatically creates triggers on all existing and future partitions. The most intuitive upgrade way you can think of is to generate a replica in a new version and perform a failover of the application into it. Such cases will now generate an error. But in PostgreSQL 13, it returns the NULL which is correct behavior, but you need to modify your application if expecting . You have to read through all of these sections for all of the base releases between 8.x and 13. Allow LOCK TABLE to succeed on a self-referential view (Tom Lane). This is essentially a leak in the security restricted operation sandbox mechanism. (They are usually small.) Update time zone data files to tzdata release 2020d for DST law changes in Fiji, Morocco, Palestine, the Canadian Yukon, Macquarie Island, and Casey Station (Antarctica); plus historical corrections for France, Hungary, Monaco, and Palestine. This is largely the same problem as just cited for pg_dump et al, although psql's behavior is more complex since the user may intentionally override some connection parameters. Allow psql to test for the existence of a variable (Fabien Coelho). Compression is already disabled in modern OpenSSL versions, so that the libpq setting had no effect with such libraries. your experience with the particular feature or requires further clarification, If you are going to be using link or clone mode, you should use the option --link or --clone with --check to enable mode-specific checks. Add a similar hint for help. If you see anything in the documentation that is not correct, does not match 1 - SIMILAR TO . Improve optimizer's row count estimates for EXISTS and NOT EXISTS queries (Tom Lane), Make the optimizer account for evaluation costs and selectivity of HAVING clauses (Tom Lane), Add Just-in-Time (JIT) compilation of some parts of query plans to improve execution speed (Andres Freund). PostgreSQL 10: November 10, 2022 PostgreSQL 11: November 9, 2023 PostgreSQL 12: November 14, 2024 (released on October 3rd, 2019) parallel merge joins the support for parallel index scans has been improved it's also possible to customize the number of parallel workers in a single query (defaults to 8) parallel hash joins (helps with inner joins) When replicating a truncate action, the subscriber will truncate the same group of tables that was truncated on the publisher, either explicitly specified or implicitly collected via CASCADE, minus tables that are not part of the subscription. The other parameters that also need to be set here are: So, we must configure our subscriber (in this case our PostgreSQL 11 server) as follows: As this PostgreSQL 11 will be our new master soon, we should consider adding the wal_level and archive_mode parameters in this step, to avoid a new restart of the service later. Sure, that's a lot of changes, but that's to be expected for such a jump. Now, if there is ambiguity, the interpretation that matches the syntactic form is chosen. L and TH now only consume characters that are not digits, positive/negative signs, decimal points, or commas. Logical replication starts by taking a snapshot of the data on the publisher database and copying that to the subscriber. This is accomplished by having pg_prewarm store the shared buffers' relation and block number data to disk occasionally during server operation, and at shutdown. power(float8, float8) followed the standard if the C library does; but on some old Unix platforms the library doesn't, and there were also problems on some versions of Windows. Thanks for your help. Allow the creation of arrays of domains (Tom Lane). -c. Add text search function websearch_to_tsquery() that supports a query syntax similar to that used by web search engines (Victor Drobny, Dmitry Ivanov), Add functions json(b)_to_tsvector() to create a text search query for matching JSON/JSONB values (Dmitry Dolgov), Add SQL-level procedures, which can start and commit their own transactions (Peter Eisentraut). The PostgreSQL Project thanks Etienne Stalmans for reporting this problem. E.3.3. (CVE-2020-25696), Prevent possible data loss from concurrent truncations of SLRU logs (Noah Misch). For example, in the version number 10.1, the 10 is the major version number and the 1 is the minor version number, meaning this would be the first minor release of the major release 10. Previously, option names in certain SQL commands were forcibly lower-cased even if entered with double quotes; thus for example "FillFactor" would be accepted as an index storage option, though properly its name is lower-case. The release notes contain the significant changes in each PostgreSQL release, with major features and migration issues listed at the top. In order to be able to copy the initial data, the role used for the replication connection must have the SELECT privilege on a published table. Widen pg_stat_statement's query ID to 64 bits (Robert Haas). : or on Windows, using the proper service names: Streaming replication and log-shipping standby servers can remain running until a later step. Change the ps process display labels for background workers to match the pg_stat_activity.backend_type labels (Peter Eisentraut), Cause large object permission checks to happen during large object open, lo_open(), not when a read or write is attempted (Tom Lane, Michael Paquier). (CVE-2020-25694), Prevent psql's \gset command from modifying specially-treated variables (Noah Misch). Is there such a thing as aspiration harmony? Allow single-evaluation queries, e.g., WHERE clause aggregate queries, and functions in the target list to be parallelized (Amit Kapila, Robert Haas), Add server parameter parallel_leader_participation to control whether the leader also executes subplans (Thomas Munro). In case id ESCAPE NULL, the application will get NULL instead of any value. If, after running pg_upgrade, you wish to revert to the old cluster, there are several options: If the --check option was used, the old cluster was unmodified; it can be restarted. Consult the rsync manual page for details on specifying the remote directory, e.g.. You can verify what the command will do using rsync's --dry-run option. This new TLS LDAP method for encrypted LDAP is enabled with ldapscheme=ldaps or ldapurl=ldaps://. this form The release notes contain the significant changes in each PostgreSQL release, with major features and migration issues listed at the top. How to subdivide triangles into four triangles with Geometry Nodes? This greatly reduces the chance of query ID hash collisions. Again, use compatible initdb flags that match the old cluster. My tip is not to spend too much time with this huge list, most of which you won't understand. This is another good reason to upgrade early: the pain is much smaller and it's usually much less work. PostgreSQL only allows superusers to access postgres_fdw tables without passwords, e.g., via peer. E.20.3.1. If you did not use link mode, do not have or do not want to use rsync, or want an easier solution, skip the instructions in this section and simply recreate the standby servers once pg_upgrade completes and the new primary is running. This feature is disabled by default but can be enabled by changing enable_partitionwise_aggregate. postgres 9 to 12 breaking changes - demo.bobbiclayton.com Remove WITH clause in CREATE FUNCTION (Michael Paquier). There is no workaround for that, other than storing data in normal tables. E.20. Release 11 - PostgreSQL Documentation It also caused autovacuum to cease functioning, which could have dire long-term effects if the surviving client sessions make a lot of data changes. Previously returned true, if ESCAPE NULL is specified. Allow partition elimination during query execution (David Rowley, Beena Emerson). Replication of TRUNCATE commands is supported, but some care must be taken when truncating groups of tables connected by foreign keys. Such a backslash now escapes the character after it, particularly a double-quote or another backslash. Thus, a compromised server could set specially-treated variables such as PROMPT1, giving the ability to execute arbitrary shell code in the user's session. In the extended query protocol, make statement_timeout apply to each Execute message separately, not to all commands before Sync (Tatsuo Ishii, Andres Freund), Remove the relhaspkey column from system catalog pg_class (Peter Eisentraut). If you see anything in the documentation that is not correct, does not match Eigenvalues of position operator in higher dimensions is vector, not scalar? When x is a table name or composite column, PostgreSQL has traditionally considered the syntactic forms f(x) and x.f to be equivalent, allowing tricks such as writing a function and then using it as though it were a computed-on-demand column. The database schema and DDL commands are not replicated. The BYPASSRLS attribute is only allowed to be changed by superusers, but other ALTER ROLE operations, such as password changes, should be allowed with only ordinary permission checks.