Failing to do so results in an error when a pgbench script tries to
start a serializable transaction inside a pipeline, because by the time
BEGIN ISOLATION LEVEL SERIALIZABLE is executed, we're already in a
transaction that has acquired a snapshot, so the server rightfully
complains.
We can work around that by preparing all commands in the pipeline before
actually starting the pipeline. This changes the existing code in two
aspects: first, we now prepare each command individually at the point
where that command is about to be executed; previously, we would prepare
all commands in a script as soon as the first command of that script
would be executed. It's hard to see that this would make much of a
difference (particularly since it only affects the first time to execute
each script in a client), but I didn't actually try to measure it.
Secondly, we no longer use PQsendPrepare() in pipeline mode, but only
PQprepare. There's no specific reason for this change other than no
longer needing to do differently in pipeline mode. (Previously we had
no choice, because in pipeline mode PQprepare could not be used.)
Backpatch to 14, where pgbench got support for pipeline mode.
Reported-by: Yugo NAGATA <nagata@sraoss.co.jp>
Discussion: https://postgr.es/m/20210716153013.fc53b1c780b06fccc07a7f0d@sraoss.co.jp
If the public schema has a non-default owner (perhaps due to
dropping and recreating it) then use of pg_dump's "--if-exists"
option results in a warning message:
warning: could not find where to insert IF EXISTS in statement "-- *not* dropping schema, since initdb creates it"
This is harmless since the dump output is the same either way,
but nonetheless it's undesirable. It's the fault of commit
a7a7be1f2, which created situations where a TOC entry's "defn"
or "dropStmt" fields could be just comments. Although that
commit fixed up the kluges in pg_backup_archiver.c that munge defn
strings, it missed doing so for the one that munges dropStmts.
Per bug# 17753 from Justin Zhang.
Discussion: https://postgr.es/m/17753-9c8773631747ee1c@postgresql.org
No buildfarm members have reported that yet, but a recently-refreshed
Debian host did.
Reviewed-by: Andrew Dunstan
Discussion: https://postgr.es/m/Y8ey5z4Nav62g4/K@paquier.xyz
Backpatch-through: 11
To test pg_upgrade across major PG versions, we have to be able to
modify or drop any old objects with no-longer-supported properties,
and we have to be able to deal with cosmetic changes in pg_dump output.
Up to now, the buildfarm and pg_upgrade's own test infrastructure had
separate implementations of the former, and we had nothing but very
ad-hoc rules for the latter (including an arbitrary threshold on how
many lines of unchecked diff were okay!). This patch creates a Perl
module that can be shared by both those use-cases, and adds logic
that deals with pg_dump output diffs in a much more tightly defined
fashion.
This largely supersedes previous efforts in commits 0df9641d3,
9814ff550, and 62be9e4cd, which developed a SQL-script-based solution
for the task of dropping old objects. There was nothing fundamentally
wrong with that work in itself, but it had no basis for solving the
output-formatting problem. The most plausible way to deal with
formatting is to build a Perl module that can perform editing on the
dump files; and once we commit to that, it makes more sense for the
same module to also embed the knowledge of what has to be done for
dropping old objects.
Back-patch versions of the helper module as far as 9.2, to
support buildfarm animals that still test that far back.
It's also necessary to back-patch PostgreSQL/Version.pm,
because the new code depends on that. I fixed up pg_upgrade's
002_pg_upgrade.pl in v15, but did not look into back-patching
it further than that.
Tom Lane and Andrew Dunstan
Discussion: https://postgr.es/m/891521.1673657296@sss.pgh.pa.us
The ALTER DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER ... SET <name>
case in psql tab completion failed to exclude <name> = "SCHEMA", which
caused ALTER FUNCTION|PROCEDURE|ROUTINE ... SET SCHEMA to complete
with "FROM CURRENT" and "TO", which won't work.
Fix that, so that those cases now complete with the list of schemas,
like other ALTER ... SET SCHEMA commands.
Noticed while testing the recent patch to improve tab completion for
ALTER FUNCTION/PROCEDURE/ROUTINE, but this is not directly related to
that patch. Rather, this is a long-standing bug, so back-patch to all
supported branches.
Discussion: https://postgr.es/m/CALDaNm0s7GQmkLP_mx5Cvk=UzYMnjhPmXBxU8DsHEunFbC5sTg@mail.gmail.com
While on it, newlines are removed from the end of two elog() strings.
The others are simple grammar mistakes. One comment in pg_upgrade
referred incorrectly to sequences since a7e5457.
Author: Justin Pryzby
Discussion: https://postgr.es/m/20221230231257.GI1153@telsasoft.com
Backpatch-through: 11
The query used to disable WITH OIDS in all the relations making use of
it was checking for materialized views, but this is not a supported
operation. On the contrary, this needs to be done on foreign tables.
While on it, use quote_ident() in the ALTER TABLE strings built on the
relation name.
Author: Anton A. Melnikov, Michael Paquier
Discussion: https://postgr.es/m/49f389ba-95ce-8a9b-09ae-f60650c0e7c7@inbox.ru
Backpatch-through: 12
Some options of these commands need to be able to identify the start
of the function body within the output of pg_get_functiondef().
It used to be that that always began with "AS", but since the
introduction of new-style SQL functions, it might also start with
"BEGIN" or "RETURN". Fix that on the psql side, and add some
regression tests.
Noted by me awhile ago, but I didn't do anything about it.
Thanks to David Johnston for a nag.
Discussion: https://postgr.es/m/AM9PR01MB8268D5CDABDF044EE9F42173FE8C9@AM9PR01MB8268.eurprd01.prod.exchangelabs.com
Because of a small thinko in 7844c9918a,
psql -c would exit successfully when a query is canceled. Fix this so
that it exits with a nonzero status, just like for all other errors.
Specifically, when pg_basebackup is invoked with -Tx=y, don't error
out if x could plausibly be an absolute path either on Windows or on
non-Windows systems. We don't know whether the remote system is
running the same OS as the local system, so it's not appropriate to
assume that our local rule about absolute pathnames is the same as
the rule on the remote system.
Patch by me, reviewed by Tom Lane, Andrew Dunstan, and
Davinder Singh.
Discussion: http://postgr.es/m/CA+TgmoY+jC3YiskomvYKDPK3FbrmsDU7_8+wMHt02HOdJeRb0g@mail.gmail.com
The pre-v15 behavior was to discard all but the last result,
but with the new behavior of printing all results by default,
we will send each such result to the \g file. However,
we're still opening and closing the \g file for each result,
so you lose all but the last result anyway. Move the output-file
state up to ExecQueryAndProcessResults so that we open/close the
\g file only once per command string.
To support this without changing other behavior, we must
adjust PrintQueryResult to have separate FILE * arguments
for query and status output (since status output has never
gone to the \g file). That in turn makes it a good idea
to push the responsibility for fflush'ing output down to
PrintQueryTuples and PrintQueryStatus.
Also fix an infinite loop if COPY IN/OUT is attempted in \watch.
We used to reject that, but that error exit path got broken
somewhere along the line in v15. There seems no real reason
to reject it anyway as the code now stands, so just remove
the error exit and make sure that COPY OUT data goes to the
right place.
Also remove PrintQueryResult's unused is_watch parameter,
and make some other cosmetic cleanups (adjust obsolete
comments, break some overly-long lines).
Daniel Vérité and Tom Lane
Discussion: https://postgr.es/m/4333844c-2244-4d6e-a49a-1d483fbe304f@manitou-mail.org
I (Álvaro) broke tab-completion for GRANT .. ALL TABLES IN SCHEMA while
removing ALL from the publication syntax for schemas in the
aforementioned commit. I also missed to update a bunch of
tab-completion rules for ALTER/CREATE PUBLICATION that match each
individual piece of ALL TABLES IN SCHEMA. Repair those bugs.
While fixing up that commit, update a couple of outdated comments
related to the same change.
Backpatch to 15.
Author: Shi yu <shiy.fnst@fujitsu.com>
Reviewed-by: Peter Smith <smithpb2250@gmail.com>
Discussion: https://postgr.es/m/OSZPR01MB6310FCE8609185A56344EED2FD559@OSZPR01MB6310.jpnprd01.prod.outlook.com
We previously thought that allowing such cases can confuse users when they
specify DROP TABLES IN SCHEMA but that doesn't seem to be the case based
on discussion. This helps to uplift the restriction during
ALTER TABLE ... SET SCHEMA which used to ensure that we couldn't end up
with a publication having both a schema and the same schema's table.
To allow this, we need to forbid having any schema on a publication if
column lists on a table are specified (and vice versa). This is because
otherwise we still need a restriction during ALTER TABLE ... SET SCHEMA to
forbid cases where it could lead to a publication having both a schema and
the same schema's table with column list.
Based on suggestions by Peter Eisentraut.
Author: Hou Zhijie and Vignesh C
Reviewed-By: Peter Smith, Amit Kapila
Backpatch-through: 15, where it was introduced
Discussion: https://postgr.es/m/2729c9e2-9aac-8cda-f2f4-34f2bcc18f4e@enterprisedb.com
This may be a bit too subtle, but removing that word from there makes
this clause no longer a perfect parallel of the GRANT variant "ALL
TABLES IN SCHEMA": indeed, for publications what we record is the schema
itself, not the tables therein, which means that any tables added to the
schema in the future are also published. This is completely different
to what GRANT does, which is affect only the tables that exist when the
command is executed.
There isn't resounding support for this change, but there are a few
positive votes and no opposition. Because the time to 15 RC1 is very
short, let's get this out now.
Backpatch to 15.
Discussion: https://postgr.es/m/2729c9e2-9aac-8cda-f2f4-34f2bcc18f4e
Commit 7103ebb7aa added the tab-completion for MERGE accidentally
in the middle of that for LOCK TABLE. This commit fixes this issue.
This also adds some tab-completion for MERGE.
Back-patch to v15 where MERGE was introduced.
Author: Kotaro Kawamoto, Fujii Masao
Reviewed-by: Shinya Kato, Álvaro Herrera
Discussion: https://postgr.es/m/9f1ad2a87a58cd5e7d64f3993130958d@oss.nttdata.com
We check that the ICU locale is only specified if the ICU locale
provider is selected. But we did that too early. We need to wait
until we load the settings of the template database, since that could
also set what the locale provider is.
Reported-by: Marina Polyakova <m.polyakova@postgrespro.ru>
Discussion: https://www.postgresql.org/message-id/9ba4cd1ea6ed6b7b15c0ff15e6f540cd@postgrespro.ru
clang 15+ will issue a set-but-not-used warning when the only
use of a variable is in autoincrements (e.g., "foo++;").
That's perfectly sensible, but it detects a few more cases that
we'd not noticed before. Silence the warnings with our usual
methods, such as PG_USED_FOR_ASSERTS_ONLY, or in one case by
actually removing a useless variable.
One thing that we can't nicely get rid of is that with %pure-parser,
Bison emits "yynerrs" as a local variable that falls foul of this
warning. To silence those, I inserted "(void) yynerrs;" in the
top-level productions of affected grammars.
Per recently-established project policy, this is a candidate
for back-patching into out-of-support branches: it suppresses
annoying compiler warnings but changes no behavior. Hence,
back-patch to 9.5, which is as far as these patches go without
issues. (A preliminary check shows that the prior branches
need some other set-but-not-used cleanups too, so I'll leave
them for another day.)
Discussion: https://postgr.es/m/514615.1663615243@sss.pgh.pa.us
If the createdb tests run under the C locale, the database cluster
will be initialized with encoding SQL_ASCII. With the checks added in
c7db01e325, this will cause several
ICU-related tests to fail because SQL_ASCII is not supported by ICU.
To work around that, use initdb option -E UTF8 for those tests to get
past that check.
Check in CREATE DATABASE and initdb that the selected encoding is
supported by ICU. Before, they would pass but users would later get
an error from the server when they tried to use the database.
Also document that initdb sets the encoding to UTF8 by default if the
ICU locale provider is chosen.
Author: Marina Polyakova <m.polyakova@postgrespro.ru>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Discussion: https://www.postgresql.org/message-id/6dd6db0984d86a51b7255ba79f111971@postgrespro.ru
The zlib documentation mentions the values supported for the compression
strategy, but this code has been using a hardcoded value of 0 rather
than Z_DEFAULT_STRATEGY. This commit adjusts the code to use
Z_DEFAULT_STRATEGY.
Backpatch down to where this code has been added to ease the backport of
any future patch touching this area.
Reported-by: Tom Lane
Discussion: https://postgr.es/m/1400032.1662217889@sss.pgh.pa.us
Backpatch-through: 10
PG_COMPRESSION_OPTION_LEVEL is removed from the compression
specification logic, and instead the compression level is always
assigned with each library's default if nothing is directly given. This
centralizes the checks on the compression methods supported by a given
build, and always assigns a default compression level when parsing a
compression specification. This results in complaining at an earlier
stage than previously if a build supports a compression method or not,
aka when parsing a specification in the backend or the frontend, and not
when processing it. zstd, lz4 and zlib are able to handle in their
respective routines setting up the compression level the case of a
default value, hence the backend or frontend code (pg_receivewal or
pg_basebackup) has now no need to know what the default compression
level should be if nothing is specified: the logic is now done so as the
specification parsing assigns it. It can also be enforced by passing
down a "level" set to the default value, that the backend will accept
(the replication protocol is for example able to handle a command like
BASE_BACKUP (COMPRESSION_DETAIL 'gzip:level=-1')).
This code simplification fixes an issue with pg_basebackup --gzip
introduced by ffd5365, where the tarball of the streamed WAL segments
would be created as of pg_wal.tar.gz with uncompressed contents, while
the intention is to compress the segments with gzip at a default level.
The origin of the confusion comes from the handling of the default
compression level of gzip (-1 or Z_DEFAULT_COMPRESSION) and the value of
0 was getting assigned, which is what walmethods.c would consider
as equivalent to no compression when streaming WAL segments with its tar
methods. Assigning always the compression level removes the confusion
of some code paths considering a value of 0 set in a specification as
either no compression or a default compression level.
Note that 010_pg_basebackup.pl has to be adjusted to skip a few tests
where the shape of the compression detail string for client and
server-side compression was checked using gzip. This is a result of the
code simplification, as gzip specifications cannot be used if a build
does not support it.
Reported-by: Tom Lane
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/1400032.1662217889@sss.pgh.pa.us
Backpatch-through: 15
Locale options can be specified for initdb, createdb, and CREATE
DATABASE. In initdb, it has always been possible to specify --locale
and then some --lc-* option to override a category. CREATE DATABASE
and createdb didn't allow that, requiring either the all-categories
option or only per-category options. In
f2553d4306, this was changed in CREATE
DATABASE (perhaps by accident?) to be more like the initdb behavior,
but createdb still had the old behavior.
Now we change createdb to match the behavior of CREATE DATABASE and
initdb, and also update the documentation of CREATE DATABASE to match
the new behavior, which was not done in the above commit.
Author: Marina Polyakova <m.polyakova@postgrespro.ru>
Reviewed-by: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://www.postgresql.org/message-id/7c99c132dc9c0ac630e0127f032ac480@postgrespro.ru
This change concerns a couple of .txt files (for internal state checks)
that were still written in the path where the binary is executed, and
not in the subdirectory located in the target cluster. Like the other
.txt files doing already so (like loadable_libraries.txt), these are
saved in the base output directory. Note that on failure, the logs
report the full path to the .txt file generated, so these are easy to
find.
Oversight in 38bfae3.
Author: Daniel Gustafsson
Reviewed-by: Michael Paquier, Justin Prysby
Discussion: https://postgr.es/m/181A6DA8-3B7F-4B71-82D5-363FF0146820@yesql.se
Backpatch-through: 15
Compiling with -Wshadow=compatible-local yields quite a few warnings about
local variables being shadowed by compatible local variables in an inner
scope. Of course, this is perfectly valid in C, but we have had bugs in
the past as a result of developers failing to notice this. af7d270dd is a
recent example.
Here we do a cleanup of warnings we receive from -Wshadow=compatible-local
for code which is new to PostgreSQL 15. We've yet to have the discussion
about if we actually ever want to run that as a standard compilation flag.
We'll need to at least get the number of warnings down to something easier
to manage before we can realistically consider if we want this or not.
This commit is the first step towards reducing the warnings.
The changes being made here are all fairly trivial. Because of that, and
the fact that v15 is still in beta, this is being back-patched into 15.
It seems more risky not to do this as the risk of future bugs is increased
by the additional conflicts that this commit could cause for any future
bug fixes touching the same areas as this commit.
Author: Justin Pryzby
Discussion: https://postgr.es/m/20220817145434.GC26426%40telsasoft.com
Backpatch-through: 15
96ef3b8ff1 accidentally copied a not
applicable comment from the float8_pass_by_value code to the
data_checksums code. Remove that.
87d3b35a1c changed pg_upgrade to
checking the checksum version rather than just the Boolean presence of
checksums, but didn't change the field type in its ControlData struct
from bool. So this would not work correctly if there ever is a
checksum version larger than 1.
The test is proving to be unreliable in the buildfarm, and we neither
agree on how best to fix it nor have time to do so before the upcoming
release. So for now, put things back to the way they were before commit
d498e052b4.
Discussion: http://postgr.es/m/3628089.1659640252@sss.pgh.pa.us
errno was not reported correctly after attempting to clone a file,
leading to incorrect error reports. While scanning through the code, I
have not noticed any similar mistakes.
Error introduced in 3a769d8.
Author: Justin Pryzby
Discussion: https://postgr.es/m/20220731134135.GY15006@telsasoft.com
Backpatch-through: 12
Instead of using command_ok() to run psql, use safe_psql(). wrasse
isn't happy, and it be because of failure to pass -X to the psql
invocation, which safe_psql() will do automatically.
Since safe_psql() returns standard output instead of writing it to
a file, this requires some changes to the incantation for running
'diff'.
Test against the 'regression' database rather than 'postgres' so
we test more than just one table. That also means we need to record
the horizons later, after the test does "VACUUM FULL pg_largeobject".
Add an ORDER BY clause to the horizon query for stability.
Patch by me, reviewed by Tom Lane.
Discussion: http://postgr.es/m/CA+TgmoaGBbpzgu3=du1f9zDUbkfycO0y=_uWrLFy=KKEqXWeLQ@mail.gmail.com
We must issue the TRUNCATE command first and update relfrozenxid
and relminmxid afterward; otherwise, TRUNCATE overwrites the
previously-set values.
Add a test case like I should have done the first time.
Per buildfarm report from TestUpgradeXversion.pm, by way of Tom
Lane.
The earlier commit used pg_class.relfilenode where it should have
used pg_class.oid. This could lead to emitting an UPDATE statement
into the dump that would update nothing (or the wrong thing) when
executed in the new cluster, resulting in relfrozenxid and
relminmxid being improperly carried forward for pg_largeobject.
Noticed by Dilip Kumar.
Discussion: http://postgr.es/m/CAFiTN-ty1Gzs6stk2vt9BJiq0m0hzf=aPnh3a-4Z3Tk5GzoENw@mail.gmail.com
Commit 9a974cbcba arranged to preserve
the relfilenode of user tables across pg_upgrade, but failed to notice
that pg_upgrade treats pg_largeobject as a user table and thus it needs
the same treatment. Otherwise, large objects will appear to vanish
after a pg_upgrade.
Commit d498e052b4 fixed this problem
by teaching pg_dump to UPDATE pg_class.relfilenode for pg_largeobject
and its index. However, because an UPDATE on the catalog rows doesn't
change anything on disk, this can leave stray files behind in the new
cluster. They will normally be empty, but it's a little bit untidy.
Hence, this commit arranges to do the same thing using DDL. Specifically,
it makes TRUNCATE work for the pg_largeobject catalog when in
binary-upgrade mode, and it then uses that command in binary-upgrade
dumps as a way of setting pg_class.relfilenode for pg_largeobject and
its index. That way, the old files are removed from the new cluster.
Discussion: http://postgr.es/m/CA+TgmoYYMXGUJO5GZk1-MByJGu_bB8CbOL6GJQC8=Bzt6x6vDg@mail.gmail.com
Commit c6f2f016 added an explicit check for a Windows "junction point".
That turned out to be needed only because get_dirent_type() was busted
on Windows. It's been fixed by commit 9d3444dc, so remove it.
Add a TAP-test to demonstrate that in-place tablespaces are copied by
pg_basebackup. This exercises the codepath that would fail before
c6f2f016 on Windows, and shows that it still doesn't fail now that we're
using get_dirent_type() on both Windows and Unix.
Back-patch to 15, where in-place tablespaces arrived and caused this
problem (ie directories where previously only symlinks were expected).
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CA%2BhUKGLzLK4PUPx0_AwXEWXOYAejU%3D7XpxnYE55Y%2Be7hB2N3FA%40mail.gmail.com
