Specifically, sha224(), sha256(), sha384(), sha512() were added. Because of the way PostgreSQL implements replication. pg_dumpall --clean now restores the original locale and encoding settings of the postgres and template1 databases, as well as those of user-created databases. Previously, references to these variables could be parsed but not executed. ), Handle concurrent desummarization correctly during BRIN index scans (Alexander Lakhin, lvaro Herrera). Start the upgrade. this form Replication is only possible from base tables to base tables. Sequence data is not replicated. Major enhancements in PostgreSQL 11 include: Improvements to partitioning functionality, including: Add support for partitioning by a hash key, Add support for PRIMARY KEY, FOREIGN KEY, indexes, and triggers on partitioned tables, Allow creation of a default partition for storing data that does not match any of the remaining partitions, UPDATE statements that change a partition key column now cause affected rows to be moved to the appropriate partitions, Improve SELECT performance through enhanced partition elimination strategies during query planning and execution, CREATE INDEX can now use parallel processing while building a B-tree index, Parallelization is now possible in CREATE TABLE AS, CREATE MATERIALIZED VIEW, and certain queries using UNION, Parallelized hash joins and parallelized sequential scans now perform better, SQL stored procedures that support embedded transactions, Optional Just-in-Time (JIT) compilation for some SQL code, speeding evaluation of expressions, Window functions now support all framing options shown in the SQL:2011 standard, including RANGE distance PRECEDING/FOLLOWING, GROUPS mode, and frame exclusion options, Covering indexes can now be created, using the INCLUDE clause of CREATE INDEX, Many other useful performance improvements, including the ability to avoid a table rewrite for ALTER TABLE ADD COLUMN with a non-null column default. In PL/pgSQL trigger functions, the OLD and NEW variables now read as NULL when not assigned (Tom Lane). The backup will only be taken for the schema, since the information will be replicated in the initial transfer. This process will create its own temporary replication slot and copy the existing data. Also indicate which partitions are themselves partitioned. pg_upgrade is included in a default installation. It might also be necessary to adjust other configuration files in the new cluster to match the old cluster, e.g., postgresql.conf (and any files included by it), postgresql.auto.conf. The script files will connect to each database that needs post-upgrade processing. You will not be running pg_upgrade on the standby servers, but rather rsync on the primary. Menu ESCAPE NULL and substring (text FROM pattern ESCAPE text) return NULL. (This also eliminates a performance issue from repeated DLL loads and unloads when a program performs a series of database connections.
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