| Commit message (Collapse) | Author | Age |
|---|
| ... | |
| |
|
|
|
|
|
|
| |
Previously, 'yesterday 04:00:00'::timestamp didn't do the same thing as
'04:00:00 yesterday'::timestamp, and the return value from the latter
was midnight rather than the specified time.
Dean Rasheed, with some stylistic changes
|
| |
|
|
|
| |
Per bug #6181 from Itagaki Takahiro. Also do some marginal code cleanup
and improve error handling.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
tsvector_concat() allocated its result workspace using the "conservative"
estimate of the sum of the two input tsvectors' sizes. Unfortunately that
wasn't so conservative as all that, because it supposed that the number of
pad bytes required could not grow. Which it can, as per test case from
Jesper Krogh, if there's a mix of lexemes with positions and lexemes
without them in the input data. The fix is to assume that we might add
a not-previously-present pad byte for each and every lexeme in the two
inputs; which really is conservative, but it doesn't seem worthwhile to
try to be more precise.
This is an aboriginal bug in tsvector_concat, so back-patch to all
versions containing it.
|
| |
|
|
|
|
| |
Use something like "error code %lu" for reporting GetLastError()
values on Windows. Previously, a mix of different wordings and
formats were in use.
|
| |
|
|
|
|
|
|
|
|
| |
This requires adjusting the API for syscache callback functions: they now
get a hash value, not a TID, to identify the target tuple. Most of them
weren't paying any attention to that argument anyway, but plancache did
require a small amount of fixing.
Also, improve performance a trifle by avoiding sending duplicate inval
messages when a heap_update isn't changing the catcache lookup columns.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
Writing
if (getnameinfo(...))
handle_error();
reads quite strangely, so use something like
if (getnameinfo(...) != 0)
handle_error();
instead.
|
| |
|
|
|
|
|
| |
It turns out to be possible to link against a libxml2.so that does this
differently than the version we configured and built against, so we need
a runtime check to avoid bizarre behavior. Per report from Bernd Helmle.
Patch by Florian Pflug.
|
| |
|
|
|
|
|
|
|
|
|
|
|
| |
Previously, xpath() simply returned an empty array if the expression did
not yield a node set. This is useless for expressions that return scalars,
such as one with name() at the top level. Arrange to return the scalar
value as a single-element xml array, instead. (String values will be
suitably escaped.)
This change will also cause xpath_exists() to return true, not false,
for such expressions.
Florian Pflug, reviewed by Radoslaw Smogura
|
| |
|
|
|
|
|
|
|
|
|
| |
Without this it's possible for the output to not be legal XML, as
illustrated by the added regression test cases.
NB: this change will need to be called out as an incompatibility in the
9.2 release notes, since it's possible somebody was relying on the old
behavior, even though it's clearly wrong.
Florian Pflug, reviewed by Radoslaw Smogura
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
libxml reports some errors (like invalid xmlns attributes) via the error
handler hook, but still returns a success indicator to the library caller.
This causes us to miss some errors that are important to report. Since the
"generic" error handler hook doesn't know whether the message it's getting
is for an error, warning, or notice, stop using that and instead start
using the "structured" error handler hook, which gets enough information
to be useful.
While at it, arrange to save and restore the error handler hook setting in
each libxml-using function, rather than assuming we can set and forget the
hook. This should improve the odds of working nicely with third-party
libraries that also use libxml.
In passing, volatile-ize some local variables that get modified within
PG_TRY blocks. I noticed this while testing with an older gcc version
than I'd previously tried to compile xml.c with.
Florian Pflug and Tom Lane, with extensive review/testing by Noah Misch
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
When an AccessShareLock, RowShareLock, or RowExclusiveLock is requested
on an unshared database relation, and we can verify that no conflicting
locks can possibly be present, record the lock in a per-backend queue,
stored within the PGPROC, rather than in the primary lock table. This
eliminates a great deal of contention on the lock manager LWLocks.
This patch also refactors the interface between GetLockStatusData() and
pg_lock_status() to be a bit more abstract, so that we don't rely so
heavily on the lock manager's internal representation details. The new
fast path lock structures don't have a LOCK or PROCLOCK structure to
return, so we mustn't depend on that for purposes of listing outstanding
locks.
Review by Jeff Davis.
|
| |
|
|
|
|
| |
There may be some other places where we should use errdetail_internal,
but they'll have to be evaluated case-by-case. This commit just hits
a bunch of places where invoking gettext is obviously a waste of cycles.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Regular aggregate functions in combination with, or within the arguments
of, window functions are OK per spec; they have the semantics that the
aggregate output rows are computed and then we run the window functions
over that row set. (Thus, this combination is not really useful unless
there's a GROUP BY so that more than one aggregate output row is possible.)
The case without GROUP BY could fail, as recently reported by Jeff Davis,
because sloppy construction of the Agg node's targetlist resulted in extra
references to possibly-ungrouped Vars appearing outside the aggregate
function calls themselves. See the added regression test case for an
example.
Fixing this requires modifying the API of flatten_tlist and its underlying
function pull_var_clause. I chose to make pull_var_clause's API for
aggregates identical to what it was already doing for placeholders, since
the useful behaviors turn out to be the same (error, report node as-is, or
recurse into it). I also tightened the error checking in this area a bit:
if it was ever valid to see an uplevel Var, Aggref, or PlaceHolderVar here,
that was a long time ago, so complain instead of ignoring them.
Backpatch into 9.1. The failure exists in 8.4 and 9.0 as well, but seeing
that it only occurs in a basically-useless corner case, it doesn't seem
worth the risks of changing a function API in a minor release. There might
be third-party code using pull_var_clause.
|
| |
|
|
| |
assigned.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
In the previous coding, we would look up a relation in RangeVarGetRelid,
lock the resulting OID, and then AcceptInvalidationMessages(). While
this was sufficient to ensure that we noticed any changes to the
relation definition before building the relcache entry, it didn't
handle the possibility that the name we looked up no longer referenced
the same OID. This was particularly problematic in the case where a
table had been dropped and recreated: we'd latch on to the entry for
the old relation and fail later on. Now, we acquire the relation lock
inside RangeVarGetRelid, and retry the name lookup if we notice that
invalidation messages have been processed meanwhile. Many operations
that would previously have failed with an error in the presence of
concurrent DDL will now succeed.
There is a good deal of work remaining to be done here: many callers
of RangeVarGetRelid still pass NoLock for one reason or another. In
addition, nothing in this patch guards against the possibility that
the meaning of an unqualified name might change due to the creation
of a relation in a schema earlier in the user's search path than the
one where it was previously found. Furthermore, there's nothing at
all here to guard against similar race conditions for non-relations.
For all that, it's a start.
Noah Misch and Robert Haas
|
| | |
|
| | |
|
| |
|
|
|
| |
This lets us stop including rel.h into execnodes.h, which is a widely
used header.
|
| |
|
|
|
|
|
|
|
|
| |
This is the proper fix for bug #6082 about
pg_stat_reset_shared(NULL) causing a crash, and it reverts
commit 79aa44536f3980d324f486504cde643ce23bf5c6 on head.
The workaround of throwing an error from inside the function is
left on backbranches (including 9.1) since this change requires
a new initdb.
|
| |
|
|
| |
Per bug #6082, reported by Steve Haslam
|
| |
|
|
|
|
|
|
|
|
| |
Initially, we use this only to eliminate calls to the varchar()
function in cases where the length is not being reduced and, therefore,
the function call is equivalent to a RelabelType operation. The most
significant effect of this is that we can avoid a table rewrite when
changing a varchar(X) column to a varchar(Y) column, where Y > X.
Noah Misch, reviewed by me and Alexey Klyukin
|
| |
|
|
|
|
|
|
|
| |
The previous code went into an infinite loop after overflow. In fact,
an overflow is not really an error; it just means that the current
value is the last one we need to return. So, just arrange to stop
immediately when overflow is detected.
Back-patch all the way.
|
| |
|
|
|
|
|
|
|
|
|
| |
The initial commit of the ALTER TABLE ADD FOREIGN KEY NOT VALID feature
failed to support labeling such constraints as deferrable. The best fix
for this seems to be to fold NOT VALID into ConstraintAttributeSpec.
That's a bit more general than the documented syntax, but it allows
better-targeted syntax error messages.
In addition, do some mostly-but-not-entirely-cosmetic code review for
the whole NOT VALID patch.
|
| |
|
|
| |
called 'pid'.
|
| | |
|
| |
|
|
|
|
|
|
|
|
| |
This case was missed when NOT VALID constraints were first introduced in
commit 722bf7017bbe796decc79c1fde03e7a83dae9ada by Simon Riggs on
2011-02-08. Among other things, it causes pg_dump to omit the NOT VALID
flag when dumping such constraints, which may cause them to fail to
load afterwards, if they contained values failing the constraint.
Per report from Thom Brown.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
parse_xml_decl's header comment says you can pass NULL for any unwanted
output parameter, but it failed to honor this contract for the "standalone"
flag. The only currently-affected caller is xml_recv, so the net effect is
that sending a binary XML value containing a standalone parameter in its
xml declaration would crash the backend. Per bug #6044 from Christopher
Dillard.
In passing, remove useless initializations of parse_xml_decl's output
parameters in xml_parse.
Back-patch to 8.3, where this code was introduced.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
We had some hacks in ruleutils.c to cope with various odd transformations
that the optimizer could do on a CASE foo WHEN "CaseTestExpr = RHS" clause.
However, the fundamental impossibility of covering all cases was exposed
by Heikki, who pointed out that the "=" operator could get replaced by an
inlined SQL function, which could contain nearly anything at all. So give
up on the hacks and just print the expression as-is if we fail to recognize
it as "CaseTestExpr = RHS". (We must cover that case so that decompiled
rules print correctly; but we are not under any obligation to make EXPLAIN
output be 100% valid SQL in all cases, and already could not do so in some
other cases.) This approach requires that we have some printable
representation of the CaseTestExpr node type; I used "CASE_TEST_EXPR".
Back-patch to all supported branches, since the problem case fails in all.
|
| | |
|
| |
|
|
|
|
| |
Found with additional valgrind testing.
Noah Misch
|
| |
|
|
| |
In the passing, clarify the comment on why text_format_nv wrapper is needed.
|
| |
|
|
|
|
|
|
|
| |
The new logic is less vulnerable to transpositions.
This invalidates the contents of hash indexes built with the old
functions; hence, bump catversion.
Dean Rasheed
|
| | |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Normally nel == 0 works okay because the initial value of "last" will be
less than "base"; but if "base" is zero then the calculation wraps around
and we have a very large (unsigned) value for "last", so that the loop can
be entered and we get a SIGSEGV on a bogus pointer.
This is certainly the proximate cause of the recent reports of Windows
builds crashing on 'infinity'::timestamp --- evidently, they're either not
setting an active timezonetktbl, or setting an empty one. It's not yet
clear to me why it's only happening on Windows and not happening on any
buildfarm member. But even if that's due to some bug elsewhere, it seems
wise for this function to not choke on the powerup values of
timezonetktbl/sztimezonetktbl.
I also changed the copy of this code in ecpglib, although I am not sure
whether it's exposed to a similar hazard.
Per report and stack trace from Richard Broersma.
|
| |
|
|
|
|
|
|
| |
Convert it to use successive shifts right instead of increasing a divisor.
This is probably a tad more efficient than the original coding, and it's
nicer-looking than the previous patch because we don't need a special case
to avoid overflow in the last branch. But the real reason to do it is to
avoid a Solaris compiler bug, as per results from buildfarm member moa.
|
| |
|
|
|
|
|
|
|
| |
printf type functions.
The style is set to "printf" for backwards compatibility everywhere except
on Windows, where it is set to "gnu_printf", which eliminates hundreds of
false error messages from modern versions of gcc arising from %m and %ll{d,u}
formats.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Per recent discussion, it's important for all computed datums (not only the
results of input functions) to not contain any ill-defined (uninitialized)
bits. Failing to ensure that can result in equal() reporting that
semantically indistinguishable Consts are not equal, which in turn leads to
bizarre and undesirable planner behavior, such as in a recent example from
David Johnston. We might eventually try to fix this in a general manner by
allowing datatypes to define identity-testing functions, but for now the
path of least resistance is to expect datatypes to force all unused bits
into consistent states.
Per some testing by Noah Misch, array and path functions seem to be the
only ones presenting risks at the moment, so I looked through all the
functions in adt/array*.c and geo_ops.c and fixed them as necessary. In
the array functions, the easiest/safest fix is to allocate result arrays
with palloc0 instead of palloc. Possibly in future someone will want to
look into whether we can just zero the padding bytes, but that looks too
complex for a back-patchable fix. In the path functions, we already had a
precedent in path_in for just zeroing the one known pad field, so duplicate
that code as needed.
Back-patch to all supported branches.
|
| |
|
|
|
|
|
|
|
|
|
| |
Instead, foreign tables are treated just like views: permissions can
be granted using GRANT privilege ON [TABLE] foreign_table_name TO role,
and revoked similarly. GRANT/REVOKE .. FOREIGN TABLE is no longer
supported, just as we don't support GRANT/REVOKE .. VIEW. The set of
accepted permissions for foreign tables is now identical to the set for
regular tables, and views.
Per report from Thom Brown, and subsequent discussion.
|
| |
|
|
|
|
|
|
| |
The expression that tried to round the value to the nearest TB could
overflow, leading to bogus output as reported in bug #5993 from Nicola
Cossu. This isn't likely to ever happen in the intended usage of the
function (if it could, we'd be needing to use a wider datatype instead);
but it's not hard to give the expected output, so let's do so.
|
| |
|
|
| |
Mostly to do with macro redefinitions or object signedness.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
These functions should take a pg_locale_t, not a collation OID, and should
call mbstowcs_l/wcstombs_l where available. Where those functions are not
available, temporarily select the correct locale with uselocale().
This change removes the bogus assumption that all locales selectable in
a given database have the same wide-character conversion method; in
particular, the collate.linux.utf8 regression test now passes with
LC_CTYPE=C, so long as the database encoding is UTF8.
I decided to move the char2wchar/wchar2char functions out of mbutils.c and
into pg_locale.c, because they work on wchar_t not pg_wchar_t and thus
don't really belong with the mbutils.c functions. Keeping them where they
were would have required importing pg_locale_t into pg_wchar.h somehow,
which did not seem like a good plan.
|
| |
|
|
|
|
|
| |
This patch is almost entirely cosmetic --- mostly cleaning up a lot of
neglected comments, and fixing code layout problems in places where the
patch made lines too long and then pgindent did weird things with that.
I did find a bug-of-omission in equalTupleDescs().
|
| |
|
|
| |
Per report from Jeff Janes.
|
| |
|
|
|
|
|
|
|
|
|
| |
Since collation is effectively an argument, not a property of the function,
FmgrInfo is really the wrong place for it; and this becomes critical in
cases where a cached FmgrInfo is used for varying purposes that might need
different collation settings. Fix by passing it in FunctionCallInfoData
instead. In particular this allows a clean fix for bug #5970 (record_cmp
not working). This requires touching a bit more code than the original
method, but nobody ever thought that collations would not be an invasive
patch...
|
| |
|
|
|
|
|
|
| |
In particular, if we don't have real ndistinct estimates for both sides,
fall back to assuming that half of the left-hand rows have join partners.
This is what was done in 8.2 and 8.3 (cf nulltestsel() in those versions).
It's pretty stupid but it won't lead us to think that an antijoin produces
no rows out, as seen in recent example from Uwe Schroeder.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If the referencing and referenced columns have different collations,
the parser will be unable to resolve which collation to use unless it's
helped out in this way. The effects are sometimes masked, if we end up
using a non-collation-sensitive plan; but if we do use a mergejoin
we'll see a failure, as recently noted by Robert Haas.
The SQL spec states that the referenced column's collation should be used
to resolve RI checks, so that's what we do. Note however that we currently
don't append a COLLATE clause when writing a query that examines only the
referencing column. If we ever support collations that have varying
notions of equality, that will have to be changed. For the moment, though,
it's preferable to leave it off so that we can use a normal index on the
referencing column.
|
| |
|
|
|
|
| |
This warning is new in gcc 4.6 and part of -Wall. This patch cleans
up most of the noise, but there are some still warnings that are
trickier to remove.
|
| |
|
|
|
|
| |
This is necessary, not optional, now that ILIKE and regexes are collation
aware --- else we might derive a wrong comparison constant for index
optimized pattern matches.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
This involves getting the character classification and case-folding
functions in the regex library to use the collations infrastructure.
Most of this work had been done already in connection with the upper/lower
and LIKE logic, so it was a simple matter of transposition.
While at it, split out these functions into a separate source file
regc_pg_locale.c, so that they can be correctly labeled with the Postgres
project's license rather than the Scriptics license. These functions are
100% Postgres-written code whereas what remains in regc_locale.c is still
mostly not ours, so lumping them both under the same copyright notice was
getting more and more misleading.
|
| | |
|
