Vadim had included this restriction in the original design of the SPI code,
but I'm darned if I can see a reason for it.

I left the macro definition of SPI_ERROR_CURSOR in place, so as not to
needlessly break any SPI callers that are checking for it, but that code
will never actually be returned anymore.

pointer" in every Snapshot struct.  This allows removal of the case-by-case
tests in HeapTupleSatisfiesVisibility, which should make it a bit faster
(I didn't try any performance tests though).  More importantly, we are no
longer violating portable C practices by assuming that small integers are
distinct from all pointer values, and HeapTupleSatisfiesDirty no longer
has a non-reentrant API involving side-effects on a global variable.

There were a couple of places calling HeapTupleSatisfiesXXX routines
directly rather than through the HeapTupleSatisfiesVisibility macro.
Since these places had to be changed anyway, I chose to make them go
through the macro for uniformity.

Along the way I renamed HeapTupleSatisfiesSnapshot to HeapTupleSatisfiesMVCC
to emphasize that it's only used with MVCC-type snapshots.  I was sorely
tempted to rename HeapTupleSatisfiesVisibility to HeapTupleSatisfiesSnapshot,
but forebore for the moment to avoid confusion and reduce the likelihood that
this patch breaks some of the pending patches.  Might want to reconsider
doing that later.

along with new conversions among EUC_JIS_2004, SHIFT_JIS_2004 and UTF-8.
catalog version has been bump up.

>
> * Allow BEFORE INSERT triggers on views
>
>   http://archives.postgresql.org/pgsql-general/2007-02/msg01466.php

> 	o Add more logical syntax CLUSTER table ORDER BY index;
> 	  support current syntax for backward compatibility

from gnuwin32.

commas are often present in the URL.

Backpatch to 8.2.X.

way as their directory (notably xml2/pgxml and intarray/_int)

exactly the same, modulo whitespace.

simpler.

to the left of the actual bool value.  While in most cases there won't be
any, our support for old-style user-defined functions violates the C spec
to the extent of calling functions that might return char or short through
a function pointer declared to return "char *", which we then coerce to
Datum.  It is not surprising that the result might contain garbage
high-order bits ... what is surprising is that we didn't see such cases
long ago.  Per report from Magnus.

search_path that was active when the plan was first made.  To do this,
improve namespace.c to support a stack of "override" search path settings
(we must have a stack since nested replan events are entirely possible).
This facility replaces the "special namespace" hack formerly used by
CREATE SCHEMA, and should be able to support per-function search path
settings as well.

This is necessary to support JIS X 0213 <--> UTF-8 conversion.

stripped down version of libpq. To be used by the installer.

Also remove headers for old sysv semaphore emulation that were forgotten
when that was changed about a year ago.

>
> * Fix cases where invalid byte encodings are accepted by the database,
>   but throw an error on SELECT
>
>   http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php

Dave Page.

CLUSTER:
>
> 	o %Add VERBOSE option to report tables as they are processed,
> 	  like VACUUM VERBOSE

Nikolay Samokhvalov

Nikolay Samokhvalov

of a multi-statement simple-Query message.  This bug goes all the way
back, but unfortunately is not nearly so easy to fix in existing releases;
it is only the recent ProcessUtility API change that makes it fixable in
HEAD.  Per report from William Garrison.

SIGQUIT signal, rather than waiting for PGSTAT_RESTART_INTERVAL.

doesn't exist.  This allows DROP to be used to clean out the pg_tablespace
catalog entry in a situation where a previous DROP attempt failed before
committing but after having removed the directories and symlink.

Per report from William Garrison.  Even though his test case depends on an
unrelated bug in PreventTransactionChain, it's certainly possible for this
situation to arise due to other problems, eg a system crash at just the
right time.

full words support, per report from Mark Stosberg.

of palloc instead of malloc, which means a list can be freed simply by deleting
the memory context that contains it.

sizeof(wchar_t) = 2 instead of 4.

First, genericcostestimate() was being way too liberal about including
partial-index conditions in its selectivity estimate, resulting in
substantial underestimates for situations such as an indexqual "x = 42"
used with an index on x "WHERE x >= 40 AND x < 50".  While the code is
intentionally set up to favor selecting partial indexes when available,
this was too much...

Second, choose_bitmap_and() was likewise easily fooled by cases of this
type, since it would similarly think that the partial index had selectivity
independent of the indexqual.

Fixed by using predicate_implied_by() rather than simple equality checks
to determine redundancy.  This is a good deal more expensive but I don't
see much alternative.  At least the extra cost is only paid when there's
actually a partial index under consideration.

Per report from Jeff Davis.  I'm not going to risk back-patching this,
though.

<
<
> 	o During index creation, pre-sort the tuples to improve build speed
>
> 	  http://archives.postgresql.org/pgsql-hackers/2007-03/msg01199.php
>

< * Add NUMERIC division operator that doesn't round?
<
<   Currently NUMERIC _rounds_ the result to the specified precision.
<   This means division can return a result that multiplied by the
<   divisor is greater than the dividend, e.g. this returns a value > 10:
<
<     SELECT (10::numeric(2,0) / 6::numeric(2,0))::numeric(2,0) * 6;
<
<   The positive modulus result returned by NUMERICs might be considered
<   inaccurate, in one sense.
<