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One example in create_table.sgml claimed to be showing table constraint
syntax, but it was really column constraint syntax due to the omission
of a comma. This is both wrong and confusing, so fix it in all
supported branches.
Per report from neil@postgrescompare.com.
Discussion: https://postgr.es/m/151871659877.1393.2431103178451978795@wrigleys.postgresql.org
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Since we now support the server side handler for git over https (so
we're no longer using the "dumb protocol"), make https the primary
choice for cloning the repository, and the git protocol the secondary
choice.
In passing, also change the links to git-scm.com from http to https.
Reviewed by Stefan Kaltenbrunner and David G. Johnston
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Security: CVE-2018-1052, CVE-2018-1053
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Also remove outdated comment about SPI subtransactions.
Reported-by: gregory@arenius.com
Discussion: https://postgr.es/m/151726276676.1240.10501743959198501067@wrigleys.postgresql.org
Backpatch-through: 9.3
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Commit 9521ce4a7a1125385fb4de9689f345db594c516a from Sep 13, 2017 and
backpatched through 9.5 used rsync examples with datadir. The reporter
has pointed out, and testing has verified, that clusterdir must be used,
so update the docs accordingly.
Reported-by: Don Seiler
Discussion: https://postgr.es/m/CAHJZqBD0u9dCERpYzK6BkRv=663AmH==DFJpVC=M4Xg_rq2=CQ@mail.gmail.com
Backpatch-through: 9.5
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Previously, only 128 was mentioned, but the others are also supported.
Thomas Munro, reviewed by Michael Paquier and extended a bit by me.
Discussion: http://postgr.es/m/CAEepm=1XbBHXYJKofGjnM2Qfz-ZBVqhGU4AqvtgR+Hegy4fdKg@mail.gmail.com
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Update the documentation for \pset to mention
columns|linestyle|pager_min_lines.
Author: Дилян Палаузов <dpa-postgres@aegee.org>
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Backpatch-through: 9.3
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Document how to properly create root and intermediate certificates using
v3_ca extensions and where to place intermediate certificates so they
are properly transferred to the remote side with the leaf certificate to
link to the remote root certificate. This corrects docs that used to
say that intermediate certificates must be stored with the root
certificate.
Also add instructions on how to create root, intermediate, and leaf
certificates.
Discussion: https://postgr.es/m/20180116002238.GC12724@momjian.us
Reviewed-by: Michael Paquier
Backpatch-through: 9.3
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These functions are stated to be Oracle-compatible, but they weren't.
Yugo Nagata noticed that while our code returns zero for a zero or
negative fourth parameter (occur_index), Oracle throws an error.
Further testing by me showed that there was also a discrepancy in the
interpretation of a negative third parameter (beg_index): Oracle thinks
that a negative beg_index indicates the last place where the target
substring can *begin*, whereas our code thinks it is the last place
where the target can *end*.
Adjust the sample code to behave like Oracle in both these respects.
Also change it to be a CDATA[] section, simplifying copying-and-pasting
out of the documentation source file. And fix minor problems in the
introductory comment, which wasn't very complete or accurate.
Back-patch to all supported branches. Although this patch only touches
documentation, we should probably call it out as a bug fix in the next
minor release notes, since users who have adopted the functions will
likely want to update their versions.
Yugo Nagata and Tom Lane
Discussion: https://postgr.es/m/20171229191705.c0b43a8c.nagata@sraoss.co.jp
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Backpatch-through: certain files through 9.3
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oversight in 244c8b466a743d1ec18a7d841bf42669699b3b56
Reported-by: Blaz Merela <blaz@merela.org>
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Reviewed-by: Magnus Hagander <magnus@hagander.net>
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rewriteTargetListUD's processing is dependent on the relkind of the query's
target table. That was fine at the time it was made to act that way, even
for queries on inheritance trees, because all tables in an inheritance tree
would necessarily be plain tables. However, the 9.5 feature addition
allowing some members of an inheritance tree to be foreign tables broke the
assumption that rewriteTargetListUD's output tlist could be applied to all
child tables with nothing more than column-number mapping. This led to
visible failures if foreign child tables had row-level triggers, and would
also break in cases where child tables belonged to FDWs that used methods
other than CTID for row identification.
To fix, delay running rewriteTargetListUD until after the planner has
expanded inheritance, so that it is applied separately to the (already
mapped) tlist for each child table. We can conveniently call it from
preprocess_targetlist. Refactor associated code slightly to avoid the
need to heap_open the target relation multiple times during
preprocess_targetlist. (The APIs remain a bit ugly, particularly around
the point of which steps scribble on parse->targetList and which don't.
But avoiding such scribbling would require a change in FDW callback APIs,
which is more pain than it's worth.)
Also fix ExecModifyTable to ensure that "tupleid" is reset to NULL when
we transition from rows providing a CTID to rows that don't. (That's
really an independent bug, but it manifests in much the same cases.)
Add a regression test checking one manifestation of this problem, which
was that row-level triggers on a foreign child table did not work right.
Back-patch to 9.5 where the problem was introduced.
Etsuro Fujita, reviewed by Ildus Kurbangaliev and Ashutosh Bapat
Discussion: https://postgr.es/m/20170514150525.0346ba72@postgrespro.ru
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This table summarizes which RLS policy expressions apply to each
command type, and whether they apply to the old or new tuples (or
both), which saves reading through a lot of text.
Rod Taylor, hacked on by me. Reviewed by Fabien Coelho.
Discussion: https://postgr.es/m/CAHz80e4HxJShm6m9ZWFrHW=pgd2KP=RZmfFnEccujtPMiAOW5Q@mail.gmail.com
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Previously, any attempt to request a 3.x protocol version other than
3.0 would lead to a hard connection failure, which made the minor
protocol version really no different from the major protocol version
and precluded gentle protocol version breaks. Instead, when the
client requests a 3.x protocol version where x is greater than 0, send
the new NegotiateProtocolVersion message to convey that we support
only 3.0. This makes it possible to introduce new minor protocol
versions without requiring a connection retry when the server is
older.
In addition, if the startup packet includes name/value pairs where
the name starts with "_pq_.", assume that those are protocol options,
not GUCs. Include those we don't support (i.e. all of them, at
present) in the NegotiateProtocolVersion message so that the client
knows they were not understood. This makes it possible for the
client to request previously-unsupported features without bumping
the protocol version at all; the client can tell from the server's
response whether the option was understood.
It will take some time before servers that support these new
facilities become common in the wild; to speed things up and make
things easier for a future 3.1 protocol version, back-patch to all
supported releases.
Robert Haas and Badrul Chowdhury
Discussion: http://postgr.es/m/BN6PR21MB0772FFA0CBD298B76017744CD1730@BN6PR21MB0772.namprd21.prod.outlook.com
Discussion: http://postgr.es/m/30788.1498672033@sss.pgh.pa.us
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This causes a warning when accidentally backpatching an XML-style
empty-element tag like <xref linkend="abc"/>.
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Security: CVE-2017-12172, CVE-2017-15098, CVE-2017-15099
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In the v10 branch, also back-patch the effects of 1ff01b390 and c29c57890
on these files, to reduce future maintenance issues. (I'd do it further
back, except that the 9.X branches differ anyway due to xlog-to-wal
link tag renaming.)
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Reported by Dan Vianello.
Discussion: https://postgr.es/m/e6e12f18f70e46848c058084d42fb651@KSTLMEXGP001.CORP.CHARTERCOM.com
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The NOTIFY page said this already, but the PREPARE TRANSACTION page
missed it.
Discussion: https://postgr.es/m/20171024010602.1488.80066@wrigleys.postgresql.org
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The GRANT reference page, which lists the default privileges for new
objects, failed to mention that USAGE is granted by default for data
types and domains. As a lesser sin, it also did not specify anything
about the initial privileges for sequences, FDWs, foreign servers,
or large objects. Fix that, and add a comment to acldefault() in the
probably vain hope of getting people to maintain this list in future.
Noted by Laurenz Albe, though I editorialized on the wording a bit.
Back-patch to all supported branches, since they all have this behavior.
Discussion: https://postgr.es/m/1507620895.4152.1.camel@cybertec.at
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Provide a correct description of how multiple policies are combined,
clarify when SELECT permissions are required, mention SELECT FOR
UPDATE/SHARE, and do some other more minor tidying up.
Reviewed by Stephen Frost
Discussion: https://postgr.es/m/CAEZATCVrxyYbOFU8XbGHicz%2BmXPYzw%3DhfNL2XTphDt-53TomQQ%40mail.gmail.com
Back-patch to 9.5.
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It drops objects outside information_schema that depend on objects
inside information_schema. For example, it will drop a user-defined
view if the view query refers to information_schema.
Discussion: https://postgr.es/m/20170831025345.GE3963697@rfd.leadboat.com
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GRANT, REVOKE, and some allied commands allow the noise word GROUP
before a role name (cf. grantee production in gram.y). This option
does not exist elsewhere, but it had nonetheless snuck into the
documentation for ALTER ROLE, ALTER USER, and CREATE SCHEMA.
Seems to be a copy-and-pasteo in commit 31eae6028, which did expand the
syntax choices here, but not in that way. Back-patch to 9.5 where that
came in.
Discussion: https://postgr.es/m/20170916123750.8885.66941@wrigleys.postgresql.org
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This step was erroneously removed four days ago by me.
Reported-by: Magnus via IM
Backpatch-through: 9.5
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Since rsync 3.0.0 (released in 2008), the default way to enumerate
changes was changed in a way that makes it less likely that the hardlink
sync mode works. Since the whole point of the documented procedure is
for the hardlinks to work, change our docs to suggest using the
backwards compatibility switch.
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Document that rsync is an _optional_ way to upgrade standbys, suggest
rsync option --dry-run, and mention a way of upgrading one standby from
another using rsync. Also clarify some instructions by specifying if
they operate on the old or new clusters.
Reported-by: Stephen Frost, Magnus Hagander
Discussion: https://postgr.es/m/20170914191250.GB6595@momjian.us
Backpatch-through: 9.5
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Backpatch-through: 9.5
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This makes it clear that pg_upgrade standby upgrade instructions should
only be used in link mode, adds examples, and explains how rsync works
with links.
Reported-by: Andreas Joseph Krogh
Discussion: https://postgr.es/m/VisenaEmail.6c.c0e592c5af4ef0a2.15e785dcb61@tc7-visena
Backpatch-through: 9.5
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This explains how rsync accomplishes updating standby servers and
clarifies the instructions.
Reported-by: Andreas Joseph Krogh
Discussion: https://postgr.es/m/VisenaEmail.10.2b4049e43870bd16.15d898d696f@tc7-visena
Backpatch-through: 9.5
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Author: Alexander Lakhin <exclusion@gmail.com>
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As long as PQntuples, PQgetvalue, etc, use "int" for row numbers, we're
pretty much stuck with this limitation. The documentation formerly stated
that the result of PQntuples "might overflow on 32-bit operating systems",
which is just nonsense: that's not where the overflow would happen, and
if you did reach an overflow it would not be on a 32-bit machine, because
you'd have OOM'd long since.
Discussion: https://postgr.es/m/CA+FnnTxyLWyjY1goewmJNxC==HQCCF4fKkoCTa9qR36oRAHDPw@mail.gmail.com
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The explanation about "0" versus "9" format characters was confusing
and arguably wrong; the discussion of sign handling wasn't very good
either. Notably, while it's accurate to say that "FM" strips leading
zeroes in date/time values, what it really does with numeric values
is to strip *trailing* zeroes, and then only if you wrote "9" rather
than "0". Per gripes from Erwin Brandstetter.
Discussion: https://postgr.es/m/CAGHENJ7jgRbTn6nf48xNZ=FHgL2WQ4X8mYsUAU57f-vq8PubEw@mail.gmail.com
Discussion: https://postgr.es/m/CAGHENJ45ymd=GOCu1vwV9u7GmCR80_5tW0fP9C_gJKbruGMHvQ@mail.gmail.com
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Discussion: https://postgr.es/m/CAFcNs+pJ6_Ud-zg3vY_Y0mzfESdM34Humt8avKrAKq_H+v18Cg@mail.gmail.com
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Security: CVE-2017-7546, CVE-2017-7547, CVE-2017-7548
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Commit 3eefc51053f250837c3115c12f8119d16881a2d7 claimed to make
pg_user_mappings enforce the qualifications user_mapping_options had
been enforcing, but its removal of a longstanding restriction left them
distinct when the current user is the subject of a mapping yet has no
server privileges. user_mapping_options emits no rows for such a
mapping, but pg_user_mappings includes full umoptions. Change
pg_user_mappings to show null for umoptions. Back-patch to 9.2, like
the above commit.
Reviewed by Tom Lane. Reported by Jeff Janes.
Security: CVE-2017-7547
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ALTER USER ... SET did not support all the syntax variants of ALTER ROLE
... SET.
Reported-by: Pavel Golub <pavel@microolap.com>
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FlightAware is still maintaining this, and indeed is seemingly being
more active with it than the pgtclng fork is. List both, for the
time being anyway.
In the back branches, also back-port commit e20f679f6 and other
recent updates to the client-interfaces list. I think these are
probably of current interest to users of back branches. I did
not touch the list of externally maintained PLs in the back
branches, though. Those are much more likely to be server version
sensitive, and I don't know which of these PLs work all the way back.
Discussion: https://postgr.es/m/20170730162612.1449.58796@wrigleys.postgresql.org
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Previously the docs just said "5.8 or later". Experimentation shows
that while you can build on Unix from a git checkout with 5.8.0,
compiling recent PL/Perl requires at least 5.8.1, and you won't be
able to run the TAP tests with less than 5.8.3 because that's when
they added "prove". (I do not have any information on just what the
MSVC build scripts require.)
Since all these versions are quite ancient, let's not split hairs
in the docs, but just say that 5.8.3 is the minimum requirement.
Discussion: https://postgr.es/m/16894.1501392088@sss.pgh.pa.us
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Claiming that NATURAL JOIN is equivalent to CROSS JOIN when there are
no common column names is only strictly correct if it's an inner join;
you can't say e.g. CROSS LEFT JOIN. Better to explain it as meaning
JOIN ON TRUE, instead. Per a suggestion from David Johnston.
Discussion: https://postgr.es/m/CAKFQuwb+mYszQhDS9f_dqRrk1=Pe-S6D=XMkAXcDf4ykKPmgKQ@mail.gmail.com
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log_lock_waits is PGC_SUSET, but config.sgml lacked the standard
boilerplate sentence noting that.
Report: https://postgr.es/m/20170719100838.19352.16320@wrigleys.postgresql.org
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We're throwing people into the guts of the syntax with not much context;
let's back up one step and point out that this goes inside a literal in
a CREATE FUNCTION command. Per suggestion from Kurt Kartaltepe.
Discussion: https://postgr.es/m/CACawnnyWAmH+au8nfZhLiFfWKjXy4d0kY+eZWfcxPRnjVfaa_Q@mail.gmail.com
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Original wording had confusingly vague antecedent for "they", so replace
that with a more repetitive but clearer formulation. In passing, make the
link to the installation requirements section more specific. Per gripe
from Martin Mai, though this is not the fix he initially proposed.
Discussion: https://postgr.es/m/CAN_NWRu-cWuNaiXUjV3m4H-riWURuPW=j21bSaLADs6rjjzXgQ@mail.gmail.com
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Buildfarm evidence shows that TCP_KEEPALIVE_THRESHOLD doesn't exist
after all on Solaris < 11. This means we need to take positive action to
prevent the TCP_KEEPALIVE code path from being taken on that platform.
I've chosen to limit it with "&& defined(__darwin__)", since it's unclear
that anyone else would follow Apple's precedent of spelling the symbol
that way.
Also, follow a suggestion from Michael Paquier of eliminating code
duplication by defining a couple of intermediate symbols for the
socket option.
In passing, make some effort to reduce the number of translatable messages
by replacing "setsockopt(foo) failed" with "setsockopt(%s) failed", etc,
throughout the affected files. And update relevant documentation so
that it doesn't claim to provide an exhaustive list of the possible
socket option names.
Like the previous commit (f0256c774), back-patch to all supported branches.
Discussion: https://postgr.es/m/20170627163757.25161.528@wrigleys.postgresql.org
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Since 9.5 has two WAL levels that apply to standby upgrades, archive and
hot_standby, adjust the docs for that version to say, basically, "restore old
cluster wal_level value in the new cluster".
This is a follow-on patch to fd376afc9863dd8ea3eba95edfa79961173e706f.
Backpatch-through: 9.5 only
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When materialized views were added, psql's \d commands were made to
treat them as a separate object category ... but not everyplace in the
documentation or comments got the memo.
Noted by David Johnston. Back-patch to 9.3 where matviews came in.
Discussion: https://postgr.es/m/CAKFQuwb27M3VXRhHErjCpkWwN9eKThbqWb1=trtoXi9_ejqPXQ@mail.gmail.com
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