Hi,
On 5/12/19 11:28 AM, Jonathan S. Katz wrote:
> Hi,
>
> Now that a draft of the release notes are available[1] this seems like a
> good time to begin determining what features we want to highlight prior
> to the Beta 1 announcement.
Thank you everyone for your feedback. Below is v2 of the list for the
Beta 1 announcement. A few things to note:
- Based on feedback I made several INSERT/UPDATE/DELETE operations on
the list ;)
- I know it's listing out a lot of features, but this is the Beta 1
release, which, among several goals, is to make people aware of as many
impactful features as possible for purposes of awareness and getting
people to help test.
- The press release will be better worded - this is just a list :)
Without further ado:
# Feature Highlights
1. Indexing
- Improvements overall performance to standard (B-tree) indexes with
writes as well as with bloat
- REINDEX CONCURRENTLY
- GiST indexes now support covering indexes (INCLUDE clause)
- SP-GiST indexes now support K-NN queries
- WAL overhead reduced on GiST, GIN, & SP-GiST index creation
2. Partitioning Improvements
- Improved partition pruning, which improves performance on queries over
tables with thousands of partitions that only need to use a few partitions
- Improvements to COPY performance and ATTACH PARTITION
- Allow foreign keys to reference partitioned tables
3. WITH queries (CTEs) can now be inlined, subject to certain restrictions
4. Support for JSON path queries per the SQL/JSON specification in the
SQL:2016 standard. A subset of these expressions can be accelerated with
on-disk indexes.
5. Support for case-insensitive and accent-insensitive collations
6. CREATE STATISTICS now supports most-common value statistics, which
leads to improved query plans for distributions that are non-uniform
7. Introduction of generated columns that compute and store an
expression as a value on the table
8. Introduction of CREATE ACCESS METHOD that permits the addition of new
table storage types
9. Enable / disable page checksums for an offline cluster
10. Authentication
- GSSAPI client/server encryption support
- LDAP server discovery
# Changes That Can Affect Existing Operating Environments
1. recovery.conf merged into postgresql.conf;
recovery.signal/standby.signal being used for switching into non-primary
mode
2. JIT enabled by default
Thanks,
Jonathan
