Release date:
-
2018-??-?? (CURRENT AS OF 2018-07-30)
+
2018-10-?? (CURRENT AS OF 2018-09-20)
- Major improvements to partitioning:
+ Improvements to partitioning functionality, including:
- Improved SELECT query performance due to
- enhanced partition elimination during query processing and
- execution
+ Improved SELECT performance from enhanced partition
+ elimination strategies during query processing and execution
KEY, indexes, and triggers on partitioned tables
+
+ Having a "default" partition for storing data that does not match any
+ of the remaining partitions
+
+
- Improvements to parallelism:
+ Improvements to parallelism, including:
- Parallelized hash joins
+ B-tree indexes can now be built in parallel with
+ CREATE INDEX
- Parallelized CREATE INDEX for B-tree indexes
+ Parallelized CREATE TABLE .. AS,
+ CREATE MATERIALIZED VIEW, and certain
+ queries using UNION
- Parallelized CREATE TABLE .. AS,
- CREATE MATERIALIZED VIEW, and certain
- queries using UNION
+ Performance improvements for parallelized hash joins and parallelized
+ sequential scans
- SQL stored procedures, with support for embedded transactions
+ SQL stored procedures that support embedded transactions. Stored
+ procedures can be created with
+ CREATE PROCEDURE and executed with
+ CALL
+
+ Covering indexes, which can be utilized using the
+ INCLUDE clause of CREATE INDEX
+
+
+
Many other useful performance improvements, including making
would be dumped without such specifications if the database locale
and encoding matched the old cluster's defaults.
-
- DID I GET EVERYTHING?
-
The new command ALTER
INDEX ATTACH PARTITION allows indexes to be
attached to partitions. This does not behave as a global index
- since the contents are private to each index. WARN WHEN USING
- AN EXISTING INDEX?
+ since the contents are private to each index.
- This reduces the likelihood of serialization conflicts. ACCURATE?
+ This reduces the likelihood of serialization conflicts.
CALLs or in nested PL/pgSQL DO and
CALL blocks that only contain other PL/pgSQL
DO and CALL blocks.
- ACCURATE?
when the
WAL streaming method
() is used.
-
- IS IT CLEAR FROM THE DOCS THAT THE REPLICATION SLOT IS NOT
- TEMPORARY?
-
- This is useful for KNN-GiST searches. HOW?
+ This is useful for KNN-GiST searches when looking for coordinates in
+ descending order.