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variable names.
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Modify pg_dump --binary-upgrade and add backend support routines to
support the preservation of pg_type oids when doing a binary upgrade.
This allows user-defined composite types and arrays to be binary
upgraded.
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index page split. This would result in index corruption, or even more likely
an error during WAL replay, if we were unlucky enough to crash during
end-of-recovery cleanup after having completed an incomplete GIST insertion.
Yoichi Hirai
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Instead, add a few targets that were missing.
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also works transparently for lesser used targets.
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choose an index name the same as it would do for an unnamed index constraint.
(My recent changes to the index naming logic have helped to ensure that this
will be a reasonable choice.) Per a suggestion from Peter.
A necessary side-effect is to promote CONCURRENTLY to type_func_name_keyword
status, ie, it can't be a table/column/index name anymore unless quoted.
This is not all bad, since we have heard more than once of people typing
CREATE INDEX CONCURRENTLY ON foo (...) and getting a normal index build of
an index named "concurrently", which was not what they wanted. Now this
syntax will result in a concurrent build of an index with system-chosen
name; which they can rename afterwards if they want something else.
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their underlying table columns. That code was not bright enough to cope with
collision situations (ie, new name conflicts with some other column of the
index). Since there is no functional reason to do this at all, trying to
upgrade the logic to be bulletproof doesn't seem worth the trouble.
This change means that both the index name and the column names of an index
are set when it's created, and won't be automatically changed when the
underlying table columns are renamed. Neatnik DBAs are still free to rename
them manually, of course.
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generating the build files for 2005 and then converting them.
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CREATE FOREIGN DATA WRAPPER. Arguably it wasn't a bug because the
documentation said that it's passed the catalog ID or zero, but surely
we should provide it when it's known. And there isn't currently any
scenario where it's not known, and I can't imagine having one in the
future either, so better remove the "or zero" escape hatch and always
pass a valid catalog ID. Backpatch to 8.4.
Martin Pihlak
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Index expression columns are now named after the FigureColname result for
their expressions, rather than always being "pg_expression_N". Digits are
appended to this name if needed to make the column name unique within the
index. (That happens for regular columns too, thus fixing the old problem
that CREATE INDEX fooi ON foo (f1, f1) fails. Before exclusion indexes
there was no real reason to do such a thing, but now maybe there is.)
Default names for indexes and associated constraints now include the column
names of all their columns, not only the first one as in previous practice.
(Of course, this will be truncated as needed to fit in NAMEDATALEN. Also,
pkey indexes retain the historical behavior of not naming specific columns
at all.)
An example of the results:
regression=# create table foo (f1 int, f2 text,
regression(# exclude (f1 with =, lower(f2) with =));
NOTICE: CREATE TABLE / EXCLUDE will create implicit index "foo_f1_lower_exclusion" for table "foo"
CREATE TABLE
regression=# \d foo_f1_lower_exclusion
Index "public.foo_f1_lower_exclusion"
Column | Type | Definition
--------+---------+------------
f1 | integer | f1
lower | text | lower(f2)
btree, for table "public.foo"
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and composite types, which are the only relkinds for which pg_dump support
exists for dumping column comments. There is no obvious usefulness for
comments on columns of sequences or toast tables; and while comments on
index columns might have some value, it's not worth the risk of compatibility
problems due to possible changes in the algorithm for assigning names to
index columns. Per discussion.
In consequence, remove now-dead code for copying such comments in CREATE TABLE
LIKE.
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Rewrite or adjust various comments for clarity. Remove one bogus comment that
doesn't reflect what the code actually does. Improve the description of the
lo_compat_privileges option.
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have hard-wired knowledge of the rules for naming index columns. It can
just look at the actual names in the source index, instead. Do some minor
formatting cleanup too.
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John Naylor
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function body can have undesirable outcomes. (bug #5232)
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PL/pgSQL-by-default patch broke the code for 8.3 <= server_version < 8.5.
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contents, and PG_CONTROL_VERSION to reflect the fact that it changed
pg_control contents. (I see we did at least remember to change
XLOG_PAGE_MAGIC for the WAL contents changes.)
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psql's startup banner.
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plpgsql is now installed by default.
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Enabled by recovery_connections = on (default) and forcing archive recovery using a recovery.conf. Recovery processing now emulates the original transactions as they are replayed, providing full locking and MVCC behaviour for read only queries. Recovery must enter consistent state before connections are allowed, so there is a delay, typically short, before connections succeed. Replay of recovering transactions can conflict and in some cases deadlock with queries during recovery; these result in query cancellation after max_standby_delay seconds have expired. Infrastructure changes have minor effects on normal running, though introduce four new types of WAL record.
New test mode "make standbycheck" allows regression tests of static command behaviour on a standby server while in recovery. Typical and extreme dynamic behaviours have been checked via code inspection and manual testing. Few port specific behaviours have been utilised, though primary testing has been on Linux only so far.
This commit is the basic patch. Additional changes will follow in this release to enhance some aspects of behaviour, notably improved handling of conflicts, deadlock detection and query cancellation. Changes to VACUUM FULL are also required.
Simon Riggs, with significant and lengthy review by Heikki Linnakangas, including streamlined redesign of snapshot creation and two-phase commit.
Important contributions from Florian Pflug, Mark Kirkwood, Merlin Moncure, Greg Stark, Gianni Ciolli, Gabriele Bartolini, Hannu Krosing, Robert Haas, Tatsuo Ishii, Hiroyuki Yamada plus support and feedback from many other community members.
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Add comments about places where system oids have to be preserved for
binary migration.
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short-circuit the rather expensive identify_system_timezone() procedure,
which we have no real need for during initdb since nothing done here depends
on the timezone setting. Since we launch quite a few standalone backends
during the initdb sequence, this adds up to a significant savings, and seems
worth doing to save developer time even though it will hardly matter to end
users. Per my report today on pgsql-hackers.
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Rewrite the documentation in more idiomatic English, and in the process make
it somewhat more succinct. Move the discussion of specific large object
privileges out of the "server-side functions" section, where it certainly
doesn't belong, and into "implementation features". That might not be
exactly right either, but it doesn't seem worth creating a new section for
this amount of information. Fix a few spelling and layout problems, too.
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This was possibly linked to a deadlock-like situation in glibc syslog code
invoked by the ereport call in quickdie(). In any case, a signal handler
should not unblock its own signal unless there is a specific reason to.
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This removes some duplicate code that recreated the identical workaround
when the newer signal API is missing.
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presented with an UNKNOWN-type Var, which can happen in cases where an
unknown literal appeared in a subquery. While many such cases will fail
later on anyway in the planner, there are some cases where the planner is
able to flatten the query and replace the Var by the constant before it has
to coerce the union column to the final type. I had added this check in 8.4
to provide earlier/better error detection, but it causes a regression for
some cases that worked OK before. Fix by not making the check if the input
node is UNKNOWN type and not a Const or Param. If it isn't going to work,
it will fail anyway at plan time, with the only real loss being inability to
provide an error cursor. Per gripe from Britt Piehler.
In passing, rename a couple of variables to remove confusion from an
inner scope masking the same variable names in an outer scope.
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ExplainSeparatePlans() was busted for both JSON and YAML output - the present
code is a holdover from the original version of my machine-readable explain
patch, which didn't have the grouping_stack machinery. Also, fix an odd
distribution of labor between ExplainBeginGroup() and ExplainYAMLLineStarting()
when marking lists with "- ", with each providing one character. This broke
the output format for multi-query statements. Also, fix ExplainDummyGroup()
for the YAML output format.
Along the way, make the YAML format use escape_yaml() in situations where the
JSON format uses escape_json(). Right now, it doesn't matter because all the
values are known not to need escaping, but it seems safer this way. Finally,
I added some comments to better explain what the YAML output format is doing.
Greg Sabino Mullane reported the issues with multi-query statements.
Analysis and remaining cleanups by me.
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David E. Wheeler
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found and solved by Boszormenyi Zoltan <zb@cybertec.at>, some small adjustments
by me.
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Behaves more or less unchanged compared to Python 2, but the new language
variant is called plpython3u. Documentation describing the naming scheme
is included.
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For long source strings the copying results in O(N^2) behavior, and the
multiplier can be significant if wide-char conversion is involved.
Andres Freund, reviewed by Kevin Grittner.
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and use it to extend contrib/pg_stat_statements to track utility commands.
Itagaki Takahiro, reviewed by Euler Taveira de Oliveira.
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non-kluge method for controlling the order in which values are fed to an
aggregate function. At the same time eliminate the old implementation
restriction that DISTINCT was only supported for single-argument aggregates.
Possibly release-notable behavioral change: formerly, agg(DISTINCT x)
dropped null values of x unconditionally. Now, it does so only if the
agg transition function is strict; otherwise nulls are treated as DISTINCT
normally would, ie, you get one copy.
Andrew Gierth, reviewed by Hitoshi Harada
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\shell command runs an external shell command.
\setshell also does the same and sets the result to a variable.
original patch by Michael Paquier with some editorialization by Itagaki,
and reviewed by Greg Smith.
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