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This was broken in d6464fdc0a591662e5e5ee1b0303932e89cb027c.
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When wal_level=logical, we'll log columns from the old tuple as
configured by the REPLICA IDENTITY facility added in commit
07cacba983ef79be4a84fcd0e0ca3b5fcb85dd65. This makes it possible
a properly-configured logical replication solution to correctly
follow table updates even if they change the chosen key columns,
or, with REPLICA IDENTITY FULL, even if the table has no key at
all. Note that updates which do not modify the replica identity
column won't log anything extra, making the choice of a good key
(i.e. one that will rarely be changed) important to performance
when wal_level=logical is configured.
Each insert, update, or delete to a catalog table will also log
the CMIN and/or CMAX values of stamped by the current transaction.
This is necessary because logical decoding will require access to
historical snapshots of the catalog in order to decode some data
types, and the CMIN/CMAX values that we may need in order to judge
row visibility may have been overwritten by the time we need them.
Andres Freund, reviewed in various versions by myself, Heikki
Linnakangas, KONDO Mitsumasa, and many others.
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SQL-standard TABLE() is a subset of UNNEST(); they deal with arrays and
other collection types. This feature, however, deals with set-returning
functions. Use a different syntax for this feature to keep open the
possibility of implementing the standard TABLE().
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Miles Elam
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Noted by Peter Geoghegan
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This sets up ECDH key exchange, when compiling against OpenSSL that
supports EC. Then the ECDHE-RSA and ECDHE-ECDSA cipher suites can be
used for SSL connections. The latter one means that EC keys are now
usable.
The reason for EC key exchange is that it's faster than DHE and it
allows to go to higher security levels where RSA will be horribly slow.
There is also new GUC option ssl_ecdh_curve that specifies the curve
name used for ECDH. It defaults to "prime256v1", which is the most
common curve in use in HTTPS.
From: Marko Kreen <markokr@gmail.com>
Reviewed-by: Adrian Klaver <adrian.klaver@gmail.com>
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The query ID is the internal hash identifier of the statement,
and was not available in pg_stat_statements view so far.
Daniel Farina, Sameer Thakur and Peter Geoghegan, reviewed by me.
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By default, OpenSSL (and SSL/TLS in general) lets the client cipher
order take priority. This is OK for browsers where the ciphers were
tuned, but few PostgreSQL client libraries make the cipher order
configurable. So it makes sense to have the cipher order in
postgresql.conf take priority over client defaults.
This patch adds the setting "ssl_prefer_server_ciphers" that can be
turned on so that server cipher order is preferred. Per discussion,
this now defaults to on.
From: Marko Kreen <markokr@gmail.com>
Reviewed-by: Adrian Klaver <adrian.klaver@gmail.com>
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Text from Adam Vande More
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Previously, the requirements of how intermediate certificates were
handled and their chain to root certificates was unclear.
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Report from Erik Rijkers
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Previously missing or invalid service files returned NULL. Also fix
pg_upgrade to report "out of memory" for a null return from
PQconndefaults().
Patch by Steve Singer, rewritten by me
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Add more documentation about how different exit codes and signals are
handled in each case.
Reviewed-by: Peter Geoghegan <pg@heroku.com>
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Wording by Alvaro Herrera
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Per suggestions from Andres Freund. Also fix spelling of
Sergey Burladyan's name.
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I'm putting these up for review before I start to extract the relevant
subsets for the older branches. It'll be easier to make any suggested
wording improvements at this stage.
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The makes the output more consistent with the existing DSSSL setup.
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This is mostly to fix incorrect migration instructions: since the preceding
minor releases advised reindexing some GIST indexes, it's important that
we back-link to that advice rather than earlier instances.
Also improve some bug descriptions and fix a few typos.
No back-patch yet; these files will get copied into the back branches
later in the release process.
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The previously used custom template is no longer necessary because
parameters provided by the standard style sheet can achieve the same
outcome.
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Adjust order of fields to match view order.
Jaime Casanova
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From: Andreas Karlsson <andreas@proxel.se>
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Per report from AK
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The latest fixes removed a limitation that was still in the docs, so Zoltan updated the docs, too.
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Haribabu kommi, slightly modified by me.
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Backpatch to 9.1.
Josh Kupershmidt
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Reviewed-by: Ali Dar <ali.munir.dar@gmail.com>
Reviewed-by: Amit Khandekar <amit.khandekar@enterprisedb.com>
Reviewed-by: Rodolfo Campero <rodolfo.campero@anachronics.com>
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That way, the HTML file name of the index will be the same as currently
for the DSSSL build.
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Change SET LOCAL/CONSTRAINTS/TRANSACTION behavior outside of a
transaction block from error (post-9.3) to warning. (Was nothing in <=
9.3.) Also change ABORT outside of a transaction block from notice to
warning.
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ECPG is not supposed to allow and output nested comments in C. These comments
are only allowed in the SQL parts and must not be written into the C file.
Also the different handling of different comments is documented.
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From: Dimitri Fontaine <dimitri@2ndQuadrant.fr>
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This patch adds the ability to write TABLE( function1(), function2(), ...)
as a single FROM-clause entry. The result is the concatenation of the
first row from each function, followed by the second row from each
function, etc; with NULLs inserted if any function produces fewer rows than
others. This is believed to be a much more useful behavior than what
Postgres currently does with multiple SRFs in a SELECT list.
This syntax also provides a reasonable way to combine use of column
definition lists with WITH ORDINALITY: put the column definition list
inside TABLE(), where it's clear that it doesn't control the ordinality
column as well.
Also implement SQL-compliant multiple-argument UNNEST(), by turning
UNNEST(a,b,c) into TABLE(unnest(a), unnest(b), unnest(c)).
The SQL standard specifies TABLE() with only a single function, not
multiple functions, and it seems to require an implicit UNNEST() which is
not what this patch does. There may be something wrong with that reading
of the spec, though, because if it's right then the spec's TABLE() is just
a pointless alternative spelling of UNNEST(). After further review of
that, we might choose to adopt a different syntax for what this patch does,
but in any case this functionality seems clearly worthwhile.
Andrew Gierth, reviewed by Zoltán Böszörményi and Heikki Linnakangas, and
significantly revised by me
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Backpatch to 9.3
Per report from Steffen Hildebrandt
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Pavel Stehule, reviewed by Jeevan Chalke and Atri Sharma
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Formerly the planner had a hard-wired rule of thumb for guessing the amount
of space consumed by an aggregate function's transition state data. This
estimate is critical to deciding whether it's OK to use hash aggregation,
and in many situations the built-in estimate isn't very good. This patch
adds a column to pg_aggregate wherein a per-aggregate estimate can be
provided, overriding the planner's default, and infrastructure for setting
the column via CREATE AGGREGATE.
It may be that additional smarts will be required in future, perhaps even
a per-aggregate estimation function. But this is already a step forward.
This is extracted from a larger patch to improve the performance of numeric
and int8 aggregates. I (tgl) thought it was worth reviewing and committing
this infrastructure separately. In this commit, all built-in aggregates
are given aggtransspace = 0, so no behavior should change.
Hadi Moshayedi, reviewed by Pavel Stehule and Tomas Vondra
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Colin 't Hart
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The previous text was a bit misleading, as well as unnecessarily vague
about what information would be discarded. Per gripe from Craig Skinner.
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Reported by Thom Brown.
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Set per file type attributes in .gitattributes to fine-tune whitespace
checks. With the associated cleanups, the tree is now clean for git
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Inspired by, but different from, a patch from Ivan Lezhnjov IV
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Pending patches for logical replication will use this to determine
which columns of a tuple ought to be considered as its candidate key.
Andres Freund, with minor, mostly cosmetic adjustments by me
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These things didn't work because the planner omitted to do the necessary
preprocessing of a WindowFunc's argument list. Add the few dozen lines
of code needed to handle that.
Although this sounds like a feature addition, it's really a bug fix because
the default-argument case was likely to crash previously, due to lack of
checking of the number of supplied arguments in the built-in window
functions. It's not a security issue because there's no way for a
non-superuser to create a window function definition with defaults that
refers to a built-in C function, but nonetheless people might be annoyed
that it crashes rather than producing a useful error message. So
back-patch as far as the patch applies easily, which turns out to be 9.2.
I'll put a band-aid in earlier versions as a separate patch.
(Note that these features still don't work for aggregates, and fixing that
case will be harder since we represent aggregate arg lists as target lists
not bare expression lists. There's no crash risk though because CREATE
AGGREGATE doesn't accept defaults, and we reject named-argument notation
when parsing an aggregate call.)
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For rather inscrutable reasons, SQL:2008 disallows copying-and-modifying a
window definition that has any explicit framing clause. The error message
we gave for this only made sense if the referencing window definition
itself contains an explicit framing clause, which it might well not.
Moreover, in the context of an OVER clause it's not exactly obvious that
"OVER (windowname)" implies copy-and-modify while "OVER windowname" does
not. This has led to multiple complaints, eg bug #5199 from Iliya
Krapchatov. Change to a hopefully more intelligible error message, and
in the case where we have just "OVER (windowname)", add a HINT suggesting
that omitting the parentheses will fix it. Also improve the related
documentation. Back-patch to all supported branches.
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These variables no longer have any useful purpose, since there's no reason
to special-case brute force timezones now that we have a valid
session_timezone setting for them. Remove the variables, and remove the
SET/SHOW TIME ZONE code that deals with them.
The user-visible impact of this is that SHOW TIME ZONE will now show a
POSIX-style zone specification, in the form "<+-offset>-+offset", rather
than an interval value when a brute-force zone has been set. While perhaps
less intuitive, this is a better definition than before because it's
actually possible to give that string back to SET TIME ZONE and get the
same behavior, unlike what used to happen.
We did not previously mention the angle-bracket syntax when describing
POSIX timezone specifications; add some documentation so that people
can figure out what these strings do. (There's still quite a lot of
undocumented functionality there, but anybody who really cares can
go read the POSIX spec to find out about it. In practice most people
seem to prefer Olsen-style city names anyway.)
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SGML documentation, as well as code comments, failed to note that an FDW's
validator will be applied to foreign-table options for foreign tables using
the FDW.
Etsuro Fujita
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