UNION/INTERSECT/EXCEPT (without ALL).  This adds on to the previous
optimization for subqueries using DISTINCT.

dynamically loaded C functions).  Some limited testing suggests that
this puts the lookup speed for external functions just about on par
with built-in functions.  Per discussion with Eric Ridge.

in a COPY error message.  It seems that glibc gets indigestion if it is
asked to truncate strings that contain invalid UTF-8 encoding sequences.
vsnprintf will return -1 in such cases, leading to looping and eventual
memory overflow in elog.c.  Instead use our own, more robust pg_mbcliplen
routine.  I believe this problem accounts for several recent reports of
unexpected 'out of memory' errors during COPY IN.

check instead of hardwiring assumptions that only certain plan node types
can appear at the places where we are testing.  This was always a pretty
fragile assumption, and it turns out to be broken in 7.4 for certain cases
involving IN-subselect tests that need type coercion.
Also, modify code that builds finished Plan tree so that node types that
don't do projection always copy their input node's targetlist, rather than
having the tlist passed in from the caller.  The old method makes it too
easy to write broken code that thinks it can modify the tlist when it
cannot.

a run-time key (that is, a nonconstant expression compared to the index
variable), the key is evaluated just once per scan, but we were charging
costs as though it were evaluated once per visited index entry.

tuptoaster.c --- fields that are compressed in-line are not a reason
to invoke the toaster.  Along the way, add a couple more htup.h macros
to eliminate confusing negated tests, and get rid of the already
vestigial TUPLE_TOASTER_ACTIVE symbol.

as the result of the SGML-based tool chain.

ARC buffer replacement strategy.

Jan

for sure...).  Rather than relying on the query context of a rangetable
entry to identify what permissions it wants checked, store a full AclMode
mask in each RTE, and check exactly those bits.  This allows an RTE
specifying, say, INSERT privilege on a view to be copied into a derived
UPDATE query without changing meaning.  Per recent discussion thread.
initdb forced due to change of stored rule representation.

not apply to system views.  It never mattered before 7.4, but it does now.

incorrect permissions checking, but in fact disabled most all permissions
checks for view updates.  This corrects problems reported by Sergey
Yatskevich among others, at the cost of re-introducing the problem
previously reported by Tim Burgess.  However, since we'd lived with that
problem for quite awhile without knowing it, we can live with it awhile
longer until a proper fix can be made in 7.5.

already-canonicalized qual expression.

useful improvement in any case, and it keeps the new logic for restrictinfo
structures happy.  Per report from Kris Jurka.

expressions supported by CREATE SCHEMA.

Also added the beginning of some regression tests for CREATE SCHEMA;
plenty more work is needed here.

fork/exec portion of the port), and fixes a handful of whitespace issues

Claudio Natoli

word16, and word32.

intended to allow application authors to insulate themselves from
changes to the default value of 'default_with_oids' in future releases
of PostgreSQL.

This patch also fixes a bug in the earlier implementation of the
'default_with_oids' GUC variable: code in gram.y should not examine
the value of GUC variables directly due to synchronization issues.

variables, not just simple variables.  This was foreseen in the original
coding of this routine, but not implemented until now.  Responds to
performance gripe from Laurent Perez.

TRANSACTION.

'simple' references another view that is not simple.  Must recheck
conditions after performing recursive pullup.  Per example from
Laurent Perez, 9-Jan-04.