Release 12:
General performance improvements, including:
* Optimizations to space utilization and read/write performance for B-tree indexes
* Partitioning performance enhancements, including improved query performance on tables with thousands of partitions, improved insertion performance with INSERT and COPY, and the ability to execute ALTER TABLE ATTACH PARTITION without blocking queries
* Automatic (but overridable) inlining of common table expressions (CTEs)
* Reduction of WAL overhead for creation of GiST, GIN, and SP-GiST indexes
* Support for covering GiST indexes, via the INCLUDE clause
* Multi-column most-common-value (MCV) statistics can be defined via CREATE STATISTICS, to support better plans for queries that test several non-uniformly-distributed columns
Enhancements to administrative functionality, including:
* REINDEX CONCURRENTLY can rebuild an index without blocking writes to its table
* pg_checksums can enable/disable page checksums (used for detecting data corruption) in an offline cluster
* Progress reporting statistics for CREATE INDEX, REINDEX, CLUSTER, VACUUM FULL, and pg_checksums
Support for the SQL/JSON path language
Stored generated columns
Nondeterministic ICU collations, enabling case-insensitive and accent-insensitive grouping and ordering
New authentication features, including:
* Encryption of TCP/IP connections when using GSSAPI authentication
* Discovery of LDAP servers using DNS SRV records
* Multi-factor authentication, using the clientcert=verify-full option combined with an additional authentication method in pg_hba.conf
PostgreSQL 11 provides users with improvements to overall performance of the database system, with specific enhancements associated with very large databases and high computational workloads. Further, PostgreSQL 11 makes significant improvements to the table partitioning system, adds support for stored procedures capable of transaction management, improves query parallelism and adds parallelized data definition capabilities, and introduces just-in-time (JIT) compilation for accelerating the execution of expressions in queries.
This release adds many new features which enhance PostgreSQL's flexibility, scalability and performance for many different types of database users, including improvements to JSON support, replication and index performance.
A major security issue fixed in this release, CVE-2013-1899, makes it possible for a connection request containing a database name that begins with "-" to be crafted that can damage or destroy files within a server's data directory. Anyone with access to the port the PostgreSQL server listens on can initiate this request.
Two lesser security fixes are also included in this release: CVE-2013-1900, wherein random numbers generated by contrib/pgcrypto functions may be easy for another database user to guess, and CVE-2013-1901, which mistakenly allows an unprivileged user to run commands that could interfere with in-progress backups. Finally, this release fixes two security issues with the graphical installers for Linux and Mac OS X: insecure passing of superuser passwords to a script, CVE-2013-1903 and the use of predictable filenames in /tmp CVE-2013-1902.
to tech-pkg:
=====
* USE_BUILDLINK3=YES will be unconditional. (In fact, USE_BUILDLINK3 will
be ignored altogether by mk/; but see below.)
* NO_BUILDLINK and NO_WRAPPER will be ignored by mk/. If a build happens,
these phases will happen.
* The existing NO_BUILD will imply the previous NO_BUILDLINK and NO_WRAPPER.
If no build happens, those phases are not needed.
* NO_TOOLS will be ignored by mk/. The tools phase, which provides much
more than just the C compiler, will always happen regardless of package.
This will make metapackage builds only slightly slower, in trade for far
less user error.
pkgsrc. It is modeled after lang/python/pyversion.mk and like it
could be influenced by user- and package-settable variables.
More precisely, tt's behaviour is controlled by the following
two variables:
- PGSQL_VERSION_DEFAULT
A user-settable variable to choose the default PostgreSQL version.
Default: 74
- PGSQL_VERSIONS_ACCEPTED
A package-settable list of PostgreSQL versions accepted by the package.
Default: 74 73
After postgresql-* has been reimported as postgresql73* all depending
packages should be changed to use mk/pgsql.buildlink3.mk.
