On 28th of January, Andrew Dunstan committed patch:
New json functions.
json_build_array() and json_build_object allow for the construction of
arbitrarily complex json trees. json_object() turns a one or two
dimensional array, or two separate arrays, into a json_object of
name/value pairs, similarly to the hstore() function.
json_object_agg() aggregates its two arguments into a single json object
as name value pairs.
Catalog version bumped.
Andrew Dunstan, reviewed by Marko Tiikkaja.
Continue reading Waiting for 9.4 – New json functions.
On 28th of January, Fujii Masao committed patch:
Add pg_stat_archiver statistics view.
This view shows the statistics about the WAL archiver process's activity.
Gabriele Bartolini, reviewed by Michael Paquier, refactored a bit by me.
Continue reading Waiting for 9.4 – Add pg_stat_archiver statistics view.
On 25th of January, Heikki Linnakangas committed patch:
Add recovery_target='immediate' option.
This allows ending recovery as a consistent state has been reached. Without
this, there was no easy way to e.g restore an online backup, without
replaying any extra WAL after the backup ended.
MauMau and me.
Continue reading Waiting for 9.4 – Add recovery_target='immediate' option.
On 18th of January, Stephen Frost committed patch:
Add ALTER TABLESPACE ... MOVE command
This adds a 'MOVE' sub-command to ALTER TABLESPACE which allows moving sets of
objects from one tablespace to another. This can be extremely handy and avoids
a lot of error-prone scripting. ALTER TABLESPACE ... MOVE will only move
objects the user owns, will notify the user if no objects were found, and can
be used to move ALL objects or specific types of objects (TABLES, INDEXES, or
He followed it, with another commit:
Add CREATE TABLESPACE ... WITH ... Options
Tablespaces have a few options which can be set on them to give PG hints
as to how the tablespace behaves (perhaps it's faster for sequential
scans, or better able to handle random access, etc). These options were
only available through the ALTER TABLESPACE command.
This adds the ability to set these options at CREATE TABLESPACE time,
removing the need to do both a CREATE TABLESPACE and ALTER TABLESPACE to
get the correct options set on the tablespace.
Vik Fearing, reviewed by Michael Paquier.
Continue reading Waiting for 9.4 – Tablespace changes
On 23rd of December, Tom Lane committed patch:
Support ordered-set (WITHIN GROUP) aggregates.
This patch introduces generic support for ordered-set and hypothetical-set
aggregate functions, as well as implementations of the instances defined in
SQL:2008 (percentile_cont(), percentile_disc(), rank(), dense_rank(),
percent_rank(), cume_dist()). We also added mode() though it is not in the
spec, as well as versions of percentile_cont() and percentile_disc() that
can compute multiple percentile values in one pass over the data.
Unlike the original submission, this patch puts full control of the sorting
process in the hands of the aggregate's support functions. To allow the
support functions to find out how they're supposed to sort, a new API
function AggGetAggref() is added to nodeAgg.c. This allows retrieval of
the aggregate call's Aggref node, which may have other uses beyond the
immediate need. There is also support for ordered-set aggregates to
install cleanup callback functions, so that they can be sure that
infrastructure such as tuplesort objects gets cleaned up.
In passing, make some fixes in the recently-added support for variadic
aggregates, and make some editorial adjustments in the recent FILTER
additions for aggregates. Also, simplify use of IsBinaryCoercible() by
allowing it to succeed whenever the target type is ANY or ANYELEMENT.
It was inconsistent that it dealt with other polymorphic target types
but not these.
Atri Sharma and Andrew Gierth; reviewed by Pavel Stehule and Vik Fearing,
and rather heavily editorialized upon by Tom Lane
Continue reading Waiting for 9.4 – Support ordered-set (WITHIN GROUP) aggregates.
On 20th of December, Robert Haas committed patch:
pg_prewarm, a contrib module for prewarming relationd data.
Patch by me. Review by Álvaro Herrera, Amit Kapila, Jeff Janes,
Gurjeet Singh, and others.
Continue reading Waiting for 9.4 – pg_prewarm, a contrib module for prewarming relationd data.
On 18th of December, Tatsuo Ishii committed patch:
Add ALTER SYSTEM command to edit the server configuration file.
Patch contributed by Amit Kapila. Reviewed by Hari Babu, Masao Fujii,
Boszormenyi Zoltan, Andres Freund, Greg Smith and others.
On the next day, Fujii Masao committed patch:
Add tab completion for ALTER SYSTEM SET in psql.
Continue reading Waiting for 9.4 – Add ALTER SYSTEM command to edit the server configuration file.
On 12th of December, Simon Riggs committed patch:
Allow time delayed standbys and recovery
Set min_recovery_apply_delay to force a delay in recovery apply for commit and
restore point WAL records. Other records are replayed immediately. Delay is
measured between WAL record time and local standby time.
Robert Haas, Fabrízio de Royes Mello and Simon Riggs
Detailed review by Mitsumasa Kondo
Continue reading Waiting for 9.4 – Allow time delayed standbys and recovery
On 12th of December, Tom Lane committed patch:
Improve EXPLAIN to print the grouping columns in Agg and Group nodes.
Per request from Kevin Grittner.
Continue reading Waiting for 9.4 – Improve EXPLAIN to print the grouping columns in Agg and Group nodes.
On 11th of December, Peter Eisentraut committed patch:
PL/Perl: Add event trigger support
From: Dimitri Fontaine <dimitri@2ndQuadrant.fr>
Continue reading Waiting for 9.4 – PL/Perl: Add event trigger support