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The default for the choice attribute of the <arg> element is "opt",
which would normally put the argument inside brackets. But the DSSSL
stylesheets contain a hack that treats <arg> directly inside <group>
specially, so that <group><arg>-x</arg><arg>-y</arg></group> comes out
as [ -x | -y ] rather than [ [-x] | [-y] ], which it would technically
be. But when building man pages, this doesn't work, and so the
command synopses on the man pages contain lots of extra brackets.
By putting choice="opt" or choice="plain" explicitly on every <arg>
and <group> element, we avoid any toolchain dependencies like that,
and it also makes it clearer in the source code what is meant.
In passing, make some small corrections in the documentation about
which arguments are really optional or not.
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Postgres 9.2, and perhaps no existing users either.
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Remove the following ports:
- dgux
- nextstep
- sunos4
- svr4
- ultrix4
- univel
These are obsolete and not worth rescuing. In most cases, there is
circumstantial evidence that they wouldn't work anymore anyway.
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Add more markup in particular so that the command options appear
consistently in monospace in the HTML output.
On the vacuumdb reference page, remove listing all the possible
options in the synopsis. They have become too many now; we have the
detailed options list for that.
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We had changed this from the default bold to monospace for all output
formats, but for man pages, this creates visual inconsistencies, so
revert to the default for man pages.
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This patch adjusts the core statistics views to match the decision already
taken for pg_stat_statements, that values representing elapsed time should
be represented as float8 and measured in milliseconds. By using float8,
we are no longer tied to a specific maximum precision of timing data.
(Internally, it's still microseconds, but we could now change that without
needing changes at the SQL level.)
The columns affected are
pg_stat_bgwriter.checkpoint_write_time
pg_stat_bgwriter.checkpoint_sync_time
pg_stat_database.blk_read_time
pg_stat_database.blk_write_time
pg_stat_user_functions.total_time
pg_stat_user_functions.self_time
pg_stat_xact_user_functions.total_time
pg_stat_xact_user_functions.self_time
The first four of these are new in 9.2, so there is no compatibility issue
from changing them. The others require a release note comment that they
are now double precision (and can show a fractional part) rather than
bigint as before; also their underlying statistics functions now match
the column definitions, instead of returning bigint microseconds.
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This seems more consistent with the pre-existing choices for names of
other statistics columns. Rename assorted internal identifiers to match.
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This spelling seems significantly more readable to me.
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Get rid of the per-column documentation of underlying functions, which did
far more to clutter the view descriptions than it did to be helpful, and
was rather incomplete and typo-ridden anyway. Instead suggest that people
consult the definitions of the standard views to see the underlying
functions.
The older functions for obtaining individual facts about backends are now
somewhat obsoleted by pg_stat_get_activity, which means that they are not
documented by any standard view. So I put that information into a separate
table. (Maybe we should just deprecate them instead?)
In passing, fix a couple more documentation errors.
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Fix a bunch of typos, improve markup, make wording more uniform, rearrange
some material. No substantive changes.
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Display total time and I/O timings in milliseconds, for consistency with
the units used for timings in the core statistics views. The columns
remain of float8 type, so that sub-msec precision is available. (At some
point we will probably want to convert the core views to use float8 type
for the same reason, but this patch does not touch that issue.)
This is a release-note-requiring change in the meaning of the total_time
column. The I/O timing columns are new as of 9.2, so there is no
compatibility impact from redefining them.
Do some minor copy-editing in the documentation, too.
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Get rid of section 8.5.6 (Date/Time Internals), which appears to confuse
people more than it helps, and anyway discussion of Postgres' internal
datetime calculation methods seems pretty out of place here. Instead,
make datatype.sgml just say that we follow the Gregorian calendar (a bit
of specification not previously present anywhere in that chapter :-()
and link to the History of Units appendix for more info. Do some mild
editorialization on that appendix, too, to make it clearer that we are
following proleptic Gregorian calendar rules rather than anything more
historically accurate.
Per a question from Florence Cousin and subsequent discussion in
pgsql-docs.
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Predominant standard is two spaces, so adjust outliers to that.
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Prohibiting this outright would break dumps taken from older versions
that contain such casts, which would create far more pain than is
justified here.
Per report by Jaime Casanova and subsequent discussion.
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Josh Kupershmidt
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Fix typo spotted by Thom Brown, and improve wording in another area
where Thom spotted a typo.
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The original syntax wasn't universally loved, and it didn't allow its
usage in CREATE TABLE, only ALTER TABLE. It now works everywhere, and
it also allows using ALTER TABLE ONLY to add an uninherited CHECK
constraint, per discussion.
The pg_constraint column has accordingly been renamed connoinherit.
This commit partly reverts some of the changes in
61d81bd28dbec65a6b144e0cd3d0bfe25913c3ac, particularly some pg_dump and
psql bits, because now pg_get_constraintdef includes the necessary NO
INHERIT within the constraint definition.
Author: Nikhil Sontakke
Some tweaks by me
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Like with SGML files, using tabs in these files is confusing and
unnecessary.
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Fujii Masao
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Clarify that nrows() is the number of rows processed, versus the
number of rows returned, which can be obtained using len. Also add
tests about that.
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The result object methods colnames() etc. would crash when called
after a command that did not produce a result set. Now they throw an
exception.
discovery and initial patch by Jean-Baptiste Quenot
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Fujii Masao, per discussion on pgsql-hackers
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The output of the new pg_xlog_location_diff function is of type numeric,
since it could theoretically overflow an int8 due to signedness; this
provides a convenient way to format such values.
Fujii Masao, with some beautification by me.
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discussion of hackers list on 2012/3/10 "missing description initdb
manual".
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Etsuro Fujita
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Per mailing list discussion, we would like to keep the bytea functions
parallel to the text functions, so rename bytea_agg to string_agg,
which already exists for text.
Also, to satisfy the rule that we don't want aggregate functions of
the same name with a different number of arguments, add a delimiter
argument, just like string_agg for text already has.
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Christoph Berg
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Thom Brown
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Previously we attempted to throw an error or at least warning for missing
schemas, but this was done inconsistently because of implementation
restrictions (in many cases, GUC settings are applied outside transactions
so that we can't do system catalog lookups). Furthermore, there were
exceptions to the rule even in the beginning, and we'd been poking more
and more holes in it as time went on, because it turns out that there are
lots of use-cases for having some irrelevant items in a common search_path
value. It seems better to just adopt a philosophy similar to what's always
been done with Unix PATH settings, wherein nonexistent or unreadable
directories are silently ignored.
This commit also fixes the documentation to point out that schemas for
which the user lacks USAGE privilege are silently ignored. That's always
been true but was previously not documented.
This is mostly in response to Robert Haas' complaint that 9.1 started to
throw errors or warnings for missing schemas in cases where prior releases
had not. We won't adopt such a significant behavioral change in a back
branch, so something different will be needed in 9.1.
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postgres:// URIs are an attempt to "stop the bleeding" in this general
area that has been said to occur due to external projects adopting their
own syntaxes. The syntaxes supported by this patch:
postgres://[user[:pwd]@][unix-socket][:port[/dbname]][?param1=value1&...]
postgres://[user[:pwd]@][net-location][:port][/dbname][?param1=value1&...]
should be enough to cover most interesting cases without having to
resort to "param=value" pairs, but those are provided for the cases that
need them regardless.
libpq documentation has been shuffled around a bit, to avoid stuffing
all the format details into the PQconnectdbParams description, which was
already a bit overwhelming. The list of keywords has moved to its own
subsection, and the details on the URI format live in another subsection.
This includes a simple test program, as requested in discussion, to
ensure that interesting corner cases continue to work appropriately in
the future.
Author: Alexander Shulgin
Some tweaking by Álvaro Herrera, Greg Smith, Daniel Farina, Peter Eisentraut
Reviewed by Robert Haas, Alexey Klyukin (offlist), Heikki Linnakangas,
Marko Kreen, and others
Oh, it also supports postgresql:// but that's probably just an accident.
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This patch reverts commit 191ef2b407f065544ceed5700e42400857d9270f
and thereby restores the pre-7.3 behavior of EXTRACT(EPOCH FROM
timestamp-without-tz). Per discussion, the more recent behavior was
misguided on a couple of grounds: it makes it hard to get a
non-timezone-aware epoch value for a timestamp, and it makes this one
case dependent on the value of the timezone GUC, which is incompatible
with having timestamp_part() labeled as immutable.
The other behavior is still available (in all releases) by explicitly
casting the timestamp to timestamp with time zone before applying EXTRACT.
This will need to be called out as an incompatible change in the 9.2
release notes. Although having mutable behavior in a function marked
immutable is clearly a bug, we're not going to back-patch such a change.
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It used to point to a top-level page that contains client-side tools as
well. It was hard to find the procedural language there.
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Thom Brown
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It's still non-deterministic in some sense ... but given fixed settings
and identical planning problems, it will now always choose the same plan,
so we probably shouldn't tar it with that brush. Per bug #6565 from
Guillaume Cottenceau. Back-patch to 9.0 where the behavior was fixed.
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storage.
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because there was only a beta for 9.0 and it does not compile on 9.1.
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Thom Browne pointed out that the URL was out of date, and Devrim GÜNDÜZ
pointed out that the project isn't maintained anymore.
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Thom Brown
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Thom Brown
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Thom Brown
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If we make the initially-called function return the table physical-size
estimate, acquire_inherited_sample_rows will be able to use that to
allocate numbers of samples among child tables, when the day comes that
we want to support foreign tables in inheritance trees.
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ANALYZE now accepts foreign tables and allows the table's FDW to control
how the sample rows are collected. (But only manual ANALYZEs will touch
foreign tables, for the moment, since among other things it's not very
clear how to handle remote permissions checks in an auto-analyze.)
contrib/file_fdw is extended to support this.
Etsuro Fujita, reviewed by Shigeru Hanada, some further tweaking by me.
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Greg Smith and Jaime Casanova, reviewed by Alex Shulgin and myself.
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