a tuple table.  Fixes core dump in pltcl (and probably other PLs) when
executing a query rewritten by a rule.  Per bug report from Wolfgang Walter.

cannot actually happen at present because ArrayCount() is only called
on strings beginning with '{', but seems best to prevent it going forward.
Per report from Yichen Xie.

can only occur if the constant DEFAULT_CLIENT_AUTHSVC is given a bogus
value, so it doesn't seem worth back-patching, but I'll fix it in HEAD.

value of MAX_TIME_PRECISION in floating-point-timestamp-storage case
from 13 to 10, which is as much as time_out is actually willing to print.
(The alternative of increasing the number of digits we are willing to
print looks risky; we might find ourselves printing roundoff garbage.)

passed to join selectivity estimators.  Make use of this in eqjoinsel
to derive non-bogus selectivity for IN clauses.  Further tweaking of
cost estimation for IN.
initdb forced because of pg_proc.h changes.

separate macro.  Also add support for %I64d which is the way on Windows.

The code that checks for the 64-bit int type now gives more reasonable
results when cross-compiling: In that case we just take the compiler's
information and trust that the arithmetic works.  Disabling int64 is too
pessimistic.

in GUCArrayAdd/GUCArrayDelete.  This prevents the multiple-entry bug
exhibited by Frank Lupo 28-Jan-2003.

Set log_min_error_messages to the proper and agreed-upon default, PANIC
(off).  (BACKPATCH)

Backpatch to 7.3.X.

> * Add the concept of dataspaces/tablespaces [tablespaces]
307d307
< * Add the concept of dataspaces/tablespaces [tablespaces]

Try to model the effect of rescanning input tuples in mergejoins;
account for JOIN_IN short-circuiting where appropriate.  Also, recognize
that mergejoin and hashjoin clauses may now be more than single operator
calls, so we have to charge appropriate execution costs.

Problem reported and fixed by Oliver Elphick.

suggestion of Peter.

> * Add group object ownership, so groups can rename/drop/grant on objects,
>   so we can implement roles

necessarily following the JOIN syntax to develop the query plan.  The old
behavior is still available by setting GUC variable JOIN_COLLAPSE_LIMIT
to 1.  Also create a GUC variable FROM_COLLAPSE_LIMIT to control the
similar decision about when to collapse sub-SELECT lists into their parent
lists.  (This behavior existed already, but the limit was always
GEQO_THRESHOLD/2; now it's separately adjustable.)

of the socket file and socket lock file; this should prevent both of them
from being removed by even the stupidest varieties of /tmp-cleaning
script.  Per suggestion from Giles Lean.

rather than actually opening the files.  This eliminates some corner cases
where the file indeed exists but open() fails for another reason, such
as being out of file descriptors.  The net reliability gain is probably
tiny, since xlog.c is full of other file open calls that will elog(PANIC)
if they fail for any reason; but this specific failure mode has been
observed in the field, so we may as well fix it.

of known-equal expressions includes any constant expressions (including
Params from outer queries), we actively suppress any 'var = var'
clauses that are or could be deduced from the set, generating only the
deducible 'var = const' clauses instead.  The idea here is to push down
the restrictions implied by the equality set to base relations whenever
possible.  Once we have applied the 'var = const' clauses, the 'var = var'
clauses are redundant, and should be suppressed both to save work at
execution and to avoid double-counting restrictivity.

users right now, not groups.  Extension of has_foo_privileges functions to
query the grant options.  Extension of aclitem type to store grantor.

for backwards compatibility with pre-7.3 behavior.  Per discussion on
pgsql-general and pgsql-hackers.

forms of ceil(), floor(), sign().  Back-patch this and other recent
doc fixes in this file to the 7.3 branch.

example from RaÇl GutiÅrrez.

DISTINCT processing on the output of an IN sub-select.

that's selecting into a RECORD variable returns zero rows, make it
assign an all-nulls row to the RECORD; this is consistent with what
happens when the SELECT INTO target is not a RECORD.  In support of
this, tweak the SPI code so that a valid tuple descriptor is returned
even when a SPI select returns no rows.