Commit Graph

20867 Commits

Author SHA1 Message Date
Tom Lane 2d8314bd43 Rename utf2ucs() to utf8_to_unicode(), and export it so it can be used
elsewhere.

Similarly rename the version in mbprint.c, not because this affects anything
but just to keep the two copies in exact sync.  There was some discussion of
having only one copy in src/port/ instead, but this function is so small
and unlikely to change that that seems like overkill.

Slightly editorialized version of a patch by Joseph Adams.  (The bug-fix
aspect of his patch was applied separately, and back-patched.)
2010-08-18 19:54:01 +00:00
Tom Lane b5565bca11 Fix failure of "ALTER TABLE t ADD COLUMN c serial" when done by non-owner.
The implicitly created sequence was created as owned by the current user,
who could be different from the table owner, eg if current user is a
superuser or some member of the table's owning role.  This caused sanity
checks in the SEQUENCE OWNED BY code to spit up.  Although possibly we
don't need those sanity checks, the safest fix seems to be to make sure
the implicit sequence is assigned the same owner role as the table has.
(We still do all permissions checks as the current user, however.)
Per report from Josh Berkus.

Back-patch to 9.0.  The bug goes back to the invention of SEQUENCE OWNED BY
in 8.2, but the fix requires an API change for DefineRelation(), which seems
to have potential for breaking third-party code if done in a minor release.
Given the lack of prior complaints, it's probably not worth fixing in the
stable branches.
2010-08-18 18:35:21 +00:00
Tom Lane 99848ed7cb Add missing handling of PlannedStmt.transientPlan in copyfuncs/outfuncs.
_outPlannedStmt is only debug support, so the omission there was not very
serious, but the omission in _copyPlannedStmt is a real bug.  The consequence
would be that a copied plan tree would never be marked as a transient plan,
so that we would forget we ought to replan it after some not-yet-ready index
becomes ready for use.  This might explain some past complaints about indexes
created with CREATE INDEX CONCURRENTLY not being used right away.  Problem
spotted by Yeb Havinga.

Back-patch to 8.3, where the field was added.
2010-08-18 15:21:54 +00:00
Heikki Linnakangas ef71375346 Coerce 'unknown' type parameters to the right type in the fixed-params
parse_analyze() function. That case occurs e.g with PL/pgSQL
EXECUTE ... USING 'stringconstant'.

The coercion with a CoerceViaIO node. The result is similar to the coercion
via input function performed for unknown constants in coerce_type(),
except that this happens at runtime.

Backpatch to 9.0. The issue is present in 8.4 as well, but the coerce param
hook infrastructure this patch relies on was introduced in 9.0. Given the
lack of user reports and harmlessness of the bug, it's not worth attempting
a different fix just for 8.4.
2010-08-18 12:20:15 +00:00
Michael Meskes 9a8d15bd41 Applied Zoltan's patch to fix a few memleaks in ecpg's pgtypeslib. 2010-08-17 09:36:05 +00:00
Tom Lane ee0e525bfc Arrange to fsync the contents of lockfiles (both postmaster.pid and the
socket lockfile) when writing them.  The lack of an fsync here may well
explain two different reports we've seen of corrupted lockfile contents,
which doesn't particularly bother the running server but can prevent a
new server from starting if the old one crashes.  Per suggestion from
Alvaro.

Back-patch to all supported versions.
2010-08-16 17:32:46 +00:00
Robert Haas 66b14030e8 Make LockDatabaseObject() AcceptInvalidationMessages().
This is appropriate for the same reasons we already do it in
LockSharedObject(): things might have changed while we were waiting
for the lock.  There doesn't seem to be a live bug here at the moment,
but that's mostly because it isn't currently used for very much.
2010-08-16 02:02:28 +00:00
Tom Lane b49c879015 Fix psql's copy of utf2ucs() to match the backend's copy exactly;
in particular, propagate a fix in the test to see whether a UTF8 character has
length 4 bytes.  This is likely of little real-world consequence because
5-or-more-byte UTF8 sequences are not supported by Postgres nor seen anywhere
in the wild, but still we may as well get it right.  Problem found by Joseph
Adams.

Bug is aboriginal, so back-patch all the way.
2010-08-16 00:06:18 +00:00
Tom Lane 22d9ddbb35 Fix planner to make a reasonable assumption about the amount of memory space
used by array_agg(), string_agg(), and similar aggregate functions that use
"internal" as their transition datatype.  The previous coding thought this
took *no* extra space, since "internal" is pass-by-value; but actually these
aggregates typically consume a great deal of space.  Per bug #5608 from
Itagaki Takahiro, and fix suggestion from Hitoshi Harada.

Back-patch to 8.4, where array_agg was introduced.
2010-08-14 15:47:13 +00:00
Tom Lane 41b810fe32 Fix \ef and \sf to not fail on functions with nonnull probin.
Update comment about them in pg_get_functiondef.
2010-08-14 14:20:35 +00:00
Tom Lane b6e06942c6 Add a \sf (show function) command to psql, for those times when you need to
look at a function but don't wish to fire up an editor.

Pavel Stehule, reviewed by Jan Urbanski
2010-08-14 13:59:49 +00:00
Tom Lane 946b078044 MyBackendId now needs to be PGDLLIMPORT, so that contrib modules can
access it on Windows.  Per buildfarm.
2010-08-14 13:37:21 +00:00
Robert Haas 27f145a40e Further dtrace adjustments for the backend-IDs-in-relpath patch.
Update the documentation, and back out a few ill-considered changes
whose folly I failed to realize for failure to read the documentation.
2010-08-14 02:22:10 +00:00
Robert Haas 105d4c5ffe Fix assorted dtrace breakage caused by patch to include backend IDs
in temp relpaths.

Per buildfarm.
2010-08-13 22:54:17 +00:00
Tom Lane 36ba263d8f Clean up failure to use ClosePager() where appropriate in help.c.
Also prevent possible repeat opening of pager in helpSQL().
2010-08-13 20:56:18 +00:00
Robert Haas debcec7dc3 Include the backend ID in the relpath of temporary relations.
This allows us to reliably remove all leftover temporary relation
files on cluster startup without reference to system catalogs or WAL;
therefore, we no longer include temporary relations in XLOG_XACT_COMMIT
and XLOG_XACT_ABORT WAL records.

Since these changes require including a backend ID in each
SharedInvalSmgrMsg, the size of the SharedInvalidationMessage.id
field has been reduced from two bytes to one, and the maximum number
of connections has been reduced from INT_MAX / 4 to 2^23-1.  It would
be possible to remove these restrictions by increasing the size of
SharedInvalidationMessage by 4 bytes, but right now that doesn't seem
like a good trade-off.

Review by Jaime Casanova and Tom Lane.
2010-08-13 20:10:54 +00:00
Tom Lane 3f9479ef3f Minor #include cleanup.
I just noticed that libpq's pqsignal.h was violating our general inclusion
style guidelines by explicitly including postgres_fe.h.  Remove that, and
put it in pqsignal.c where it belongs.
2010-08-13 20:04:33 +00:00
Tom Lane a0b7b717a4 Add xml_is_well_formed, xml_is_well_formed_document, xml_is_well_formed_content
functions to the core XML code.  Per discussion, the former depends on
XMLOPTION while the others do not.  These supersede a version previously
offered by contrib/xml2.

Mike Fowler, reviewed by Pavel Stehule
2010-08-13 18:36:26 +00:00
Tom Lane 2a7349f030 Fix Assert failure in PushOverrideSearchPath when trying to restore a search
path that specifies useTemp, but there is no active temp schema in the
current session.  (This can happen if the path was saved during a transaction
that created a temp schema and was later rolled back.)  For existing callers
it's sufficient to ignore the useTemp flag in this case, though we might
later want to offer an option to create a fresh temp schema.  So far as I can
tell this is just an Assert failure: in a non-assert build, the code would
push a zero onto the new search path, which is useless but not very harmful.
Per bug report from Heikki.

Back-patch to 8.3; prior versions don't have this code.
2010-08-13 16:27:11 +00:00
Robert Haas 95ef7cd40d Make RecordTransactionCommit() respect wal_level.
Since the only purpose of WAL-loggin SharedInvalidationMessages is to support
Hot Standby operation, they needn't be included when wal_level < hot_standby.

Back-patch to 9.0.

Review by Heikki Linnakanagas and Fujii Masao.
2010-08-13 15:42:21 +00:00
Tom Lane e4155c8483 Fix pg_restore to complain if any arguments remain after parsing the switches
and input file name, per bug #5617 from Leo Shklovskii.  Rearrange the
corresponding code in pg_dump and pg_dumpall so that all three programs
handle this in a consistent, straightforward fashion.

Back-patch to 9.0, but no further.  Although this is certainly a bug, it's
possible that people have scripts that will be broken by the added error
check, so it seems better not to change the behavior in stable branches.
2010-08-13 14:38:04 +00:00
Robert Haas 30c22eb8fc Correct sundry errors in Hot Standby-related comments.
Fujii Masao
2010-08-12 23:24:54 +00:00
Tom Lane 568e709372 Extend psql's \e and \ef commands so that a line number can be specified,
and the editor's cursor will be initially placed on that line.  In \e the
lines are counted with respect to the query buffer, while in \ef they are
counted with line 1 = first line of function body.  These choices are useful
for positioning the cursor on the line of a previously-reported error.

To avoid assumptions about what switch the user's editor takes for this
purpose, invent a new psql variable EDITOR_LINENUMBER_SWITCH with (at
present) no default value.

One incompatibility from previous behavior is that "\e 1234" will now
take "1234" as a line number not a file name.  There are at least two
ways to select a numerically-named file if you really want to.

Pavel Stehule, reviewed by Jan Urbanski, with further editing by Robert Haas
and Tom Lane
2010-08-12 00:40:59 +00:00
Heikki Linnakangas c9ae257e23 The sanity check added to array_recv() wa a bit too tight; we must
continue to accept an empty array with dimension information. array_send()
can output such arrays.

Per report from Vladimir Shakhov.
2010-08-11 19:12:27 +00:00
Tom Lane 33f43725fb Add three-parameter forms of array_to_string and string_to_array, to allow
better handling of NULL elements within the arrays.  The third parameter
is a string that should be used to represent a NULL element, or should
be translated into a NULL element, respectively.  If the third parameter
is NULL it behaves the same as the two-parameter form.

There are two incompatible changes in the behavior of the two-parameter form
of string_to_array.  First, it will return an empty (zero-element) array
rather than NULL when the input string is of zero length.  Second, if the
field separator is NULL, the function splits the string into individual
characters, rather than returning NULL as before.  These two changes make
this form fully compatible with the behavior of the new three-parameter form.

Pavel Stehule, reviewed by Brendan Jurd
2010-08-10 21:51:00 +00:00
Tom Lane 46af71ff7e Fix incorrect logic in plpgsql for cleanup after evaluation of non-simple
expressions.  We need to deal with this when handling subscripts in an array
assignment, and also when catching an exception.  In an Assert-enabled build
these omissions led to Assert failures, but I think in a normal build the
only consequence would be short-term memory leakage; which may explain why
this wasn't reported from the field long ago.

Back-patch to all supported versions.  7.4 doesn't have exceptions, but
otherwise these bugs go all the way back.

Heikki Linnakangas and Tom Lane
2010-08-09 18:50:11 +00:00
Tom Lane 2e35d4f35c Modify the handling of RAISE without parameters so that the error it throws
can be caught in the same places that could catch an ordinary RAISE ERROR
in the same location.  The previous coding insisted on throwing the error
from the block containing the active exception handler; which is arguably
more surprising, and definitely unlike Oracle's behavior.

Not back-patching, since this is a pretty obscure corner case.  The risk
of breaking somebody's code in a minor version update seems to outweigh
any possible benefit.

Piyush Newe, reviewed by David Fetter
2010-08-09 02:25:07 +00:00
Tom Lane 4dfc457854 Add an xpath_exists() function. This is equivalent to XMLEXISTS except that
it offers support for namespace mapping.

Mike Fowler, reviewed by David Fetter
2010-08-08 19:15:27 +00:00
Tom Lane 46aa77c7bd Add stats functions and views to provide access to a transaction's own
statistics counts.  These numbers are being accumulated but haven't yet been
transmitted to the collector (and won't be, until the transaction ends).
For some purposes, though, it's handy to be able to look at them.

Joel Jacobson, reviewed by Itagaki Takahiro
2010-08-08 16:27:06 +00:00
Tom Lane e49ae8d3bc Recognize functional dependency on primary keys. This allows a table's
other columns to be referenced without listing them in GROUP BY, so long as
the primary key column(s) are listed in GROUP BY.

Eventually we should also allow functional dependency on a UNIQUE constraint
when the columns are marked NOT NULL, but that has to wait until NOT NULL
constraints are represented in pg_constraint, because we need to have
pg_constraint OIDs for all the conditions needed to ensure functional
dependency.

Peter Eisentraut, reviewed by Alex Hunsaker and Tom Lane
2010-08-07 02:44:09 +00:00
Tom Lane f73b765182 Add a comment about the initial default value of max_stack_depth. 2010-08-06 14:51:33 +00:00
Robert Haas 901c0ea2f1 Fix incorrect pathname in comment. 2010-08-06 03:46:23 +00:00
Tom Lane 1e4c050b24 Add a very specific hint for the case that we're unable to locate a function
matching a call like f(x, ORDER BY y,z).  It could be that what the user
really wants is f(x,z ORDER BY y).  We now have pretty conclusive evidence
that many people won't understand this problem without concrete guidance,
so give it to them.  Per further discussion of the string_agg() problem.
2010-08-05 21:45:35 +00:00
Tom Lane b0c451e145 Remove the single-argument form of string_agg(). It added nothing much in
functionality, while creating an ambiguity in usage with ORDER BY that at
least two people have already gotten seriously confused by.  Also, add an
opr_sanity test to check that we don't in future violate the newly minted
policy of not having built-in aggregates with the same name and different
numbers of parameters.  Per discussion of a complaint from Thom Brown.
2010-08-05 18:21:19 +00:00
Robert Haas fd1843ff89 Standardize get_whatever_oid functions for other object types.
- Rename TSParserGetPrsid to get_ts_parser_oid.
- Rename TSDictionaryGetDictid to get_ts_dict_oid.
- Rename TSTemplateGetTmplid to get_ts_template_oid.
- Rename TSConfigGetCfgid to get_ts_config_oid.
- Rename FindConversionByName to get_conversion_oid.
- Rename GetConstraintName to get_constraint_oid.
- Add new functions get_opclass_oid, get_opfamily_oid, get_rewrite_oid,
  get_rewrite_oid_without_relid, get_trigger_oid, and get_cast_oid.

The name of each function matches the corresponding catalog.

Thanks to KaiGai Kohei for the review.
2010-08-05 15:25:36 +00:00
Robert Haas 2a6ef3445c Standardize get_whatever_oid functions for object types with
unqualified names.

- Add a missing_ok parameter to get_tablespace_oid.
- Avoid duplicating get_tablespace_od guts in objectNamesToOids.
- Add a missing_ok parameter to get_database_oid.
- Replace get_roleid and get_role_checked with get_role_oid.
- Add get_namespace_oid, get_language_oid, get_am_oid.
- Refactor existing code to use new interfaces.

Thanks to KaiGai Kohei for the review.
2010-08-05 14:45:09 +00:00
Peter Eisentraut 641459f269 Add xmlexists function
by Mike Fowler, reviewed by Peter Eisentraut
2010-08-05 04:21:54 +00:00
Robert Haas 26e47efb66 Fix declared argument name for numeric_maximum_size.
The previous commit changed the function to say 'typmod' rather than
'typemod', but I forgot to update the header file.
2010-08-04 17:35:59 +00:00
Robert Haas 97f38001ac Fix numeric_maximum_size() calculation.
The old computation can sometimes underestimate the necessary space
by 2 bytes; however we're not back-patching this, because this result
isn't used for anything critical.  Per discussion with Tom Lane,
make the typmod test in this function match the ones in numeric()
and apply_typmod() exactly.
2010-08-04 17:33:09 +00:00
Robert Haas 145343534c Allow numeric to use a more compact, 2-byte header in many cases.
Review by Brendan Jurd and Tom Lane.
2010-08-03 23:09:29 +00:00
Tom Lane db04f2b322 Replace the naive HYPOT() macro with a standards-conformant hypotenuse
function.  This avoids unnecessary overflows and probably gives a more
accurate result as well.

Paul Matthews, reviewed by Andrew Geery
2010-08-03 21:21:03 +00:00
Tom Lane 3491520986 Code review for --quote-all-identifiers patch: add missing --help documentation
for new pg_dump/pg_dumpall parameters, make a couple of trivial stylistic
adjustments to make the code follow usual project style.
2010-08-03 19:24:05 +00:00
Tom Lane 5b92ef44dd Kibitzing on \conninfo patch: adjust the order of field output to match
the parameters of \connect, and fix oversight of not enabling translation
of the messages.  Also, adjust \connect's similar messages to match, and
deal with 8.2-era violation of basic translatability guidelines there.
2010-08-03 18:33:09 +00:00
Tom Lane 72405b066b Add some comments to tinterval_cmp_internal pointing out its severe
implementation deficiencies.  Per discussion of bug #5592, we're not
going to change it, but these things should be documented so that if
anyone ever reimplements type tinterval, they will be more careful.
2010-08-03 16:31:02 +00:00
Robert Haas 31b6fc06d8 Fix inheritance count tracking in ALTER TABLE .. ADD CONSTRAINT.
Without this patch, constraints inherited by children of a parent
table which itself has multiple inheritance parents can end up with
the wrong coninhcount.  After dropping the constraint, the children
end up with a leftover copy of the constraint that is not dumped
and cannot be dropped.  There is a similar problem with ALTER TABLE
.. ADD COLUMN, but that looks significantly more difficult to
resolve, so I'm committing this fix separately.

Back-patch to 8.4, which is the first release that has coninhcount.

Report by Hank Enting.
2010-08-03 15:47:02 +00:00
Tom Lane 532a4c3531 Be a little more careful with the shift computations in QT2QTN and
makeTSQuerySign.  The first of these is a live bug, on some platforms,
as per bug #5590 from John Regehr.  However the consequences seem limited
because of the relatively narrow scope of use of QTNode.sign.  The shift in
makeTSQuerySign is actually safe because TSQS_SIGLEN is unsigned, but it
seems like a good idea to insert an explicit cast rather than depend on that.
2010-08-03 01:50:27 +00:00
Tom Lane 57641a165f Fix core dump in QTNodeCompare when tsquery_cmp() is applied to two empty
tsqueries.  CompareTSQ has to have a guard for the case rather than blindly
applying QTNodeCompare to random data past the end of the datums.  Also,
change QTNodeCompare to be a little less trusting: use an actual test rather
than just Assert'ing that the input is sane.  Problem encountered while
investigating another issue (I saw a core dump in autoanalyze on a table
containing multiple empty tsquery values).

Back-patch to all branches with tsquery support.

In HEAD, also fix some bizarre (though not outright wrong) coding in
tsq_mcontains().
2010-08-03 00:10:39 +00:00
Tom Lane 98c2383ba5 Don't try to force use of -no-cpp-precomp on OS X. It's been five years
since Apple shipped a compiler that needed this switch, and there's
increasing interest in using other compilers that won't accept the switch
at all.  Better to let anybody who still needs the switch inject it via
CPPFLAGS.  Per gripe from Neil Conway.
2010-08-02 04:51:17 +00:00
Robert Haas c3a05881de Remove ancient PL/pgsql line numbering hack.
While this hack arguably has some benefit in terms of making PL/pgsql's
line numbering match the programmer's expectations, it also makes
PL/pgsql inconsistent with the remaining PLs, making it difficult for
clients to reliably determine where the error actually is.  On balance,
it seems better to be consistent.

Pavel Stehule
2010-08-02 03:46:54 +00:00
Tom Lane e621037eec Tweak a couple of macros in the regex code to suppress compiler warnings
from "clang".  The VERR changes make an assignment unconditional, which is
probably easier to read/understand anyway, and one can hardly argue that
it's worth shaving cycles off the case of reporting another error when
one has already been detected.  The INSIST change limits where that macro
can be used, but not in a way that creates a problem for any existing call.
2010-08-02 02:29:39 +00:00