the column alias names of the RTE referenced by the Var to the RowExpr.
This is needed to allow ruleutils.c to correctly deparse FieldSelect nodes
referencing such a construct.  Per my recent bug report.

Adding a field to RowExpr forces initdb (because of stored rules changes)
so this solution is not back-patchable; which is unfortunate because 8.2
and 8.3 have this issue.  But it only affects EXPLAIN for some pretty odd
corner cases, so we can probably live without a solution for the back
branches.

from a query level above the current ParseState.

relation forks. While the file names are not visible to users, for those
that do peek into the data directory, it's nice to have more descriptive
names. Per Greg Stark's suggestion.

the value a parameter has at server start and will have after RESET,
respectively.

Greg Smith, with some modifications by me.

maybe isalnum is returning a value with the low-order byte all zero?

well as regular tables.  Per discussion, this seems necessary to meet the
principle of least astonishment.

In passing, simplify the error messages in warnAutoRange().  Now that we
have parser error position info for these errors, it doesn't seem very
useful to word the error message differently depending on whether we are
inside a sub-select or not.

machine produces zero (rather than the more usual minimum-possible-integer)
for the only possible overflow case.  This has been seen to occur for at least
some word widths on some hardware, and it's cheap enough to check for
everywhere.  Per Peter's analysis of buildfarm reports.

This could be back-patched, but in the absence of any gripes from the field
I doubt it's worth the trouble.

non-recursive term.  Per an example from Dickson S. Guedes.

recursive CTE that we're still in progress of analyzing.  Add a similar guard
to the similar code in expandRecordVariable(), and tweak regression tests to
cover this case.  Per report from Dickson S. Guedes.

nullvalue, nonvalue.  A long time ago, these were used to implement the SQL
constructs IS TRUE, etc.

int8-exp-three-digits.out update untested, might need refinement.

There are some unimplemented aspects: recursive queries must use UNION ALL
(should allow UNION too), and we don't have SEARCH or CYCLE clauses.
These might or might not get done for 8.4, but even without them it's a
pretty useful feature.

There are also a couple of small loose ends and definitional quibbles,
which I'll send a memo about to pgsql-hackers shortly.  But let's land
the patch now so we can get on with other development.

Yoshiyuki Asaba, with lots of help from Tatsuo Ishii and Tom Lane

knowledge disappears again.

input formats.

changes.  Add some documenting comments.

builds.  It is too complicated to fix in another way for now.

name of a fork ('main' or 'fsm', at the moment) to pg_relation_size() to
get the size of a specific fork. Defaults to 'main', if none given.

While we're at it, modify pg_relation_size to take a regclass as argument,
instead of separate variants taking oid and name. This change is
transparent to typical use where the table name is passed as a string
literal, like pg_relation_size('table'), but will break queries like
pg_relation_size(namecol), where namecol is of type name. text-type input
still works, and using a non-schema-qualified table name is not very
reliable anyway, so this is unlikely to break anyone's queries in practice.

code in 8.4.

when using --enable-integer-datetimes and a non-ISO datestyle.

Ron Mayer

large enough for block numbers higher than 2^31. The old pre-FSM-rewrite
pg_freespacemap implementation got this right. While we're at it, remove
some unnecessary #includes.

"pg_freespacemap". Reported by hubert depesz lubaczewski.

in both input and output dir, to handle vpath builds more simply.

This facility replaces the former mark/restore support but is otherwise
upward-compatible with previous uses.  It's expected to be needed for
single evaluation of CTEs and also for window functions, so I'm committing
it separately instead of waiting for either one of those patches to be
finished.  Per discussion with Greg Stark and Hitoshi Harada.

Note: I removed nodeFunctionscan's mark/restore support, instead of bothering
to update it for this change, because it was dead code anyway.

required by at least NetBSD.

Markus Schaaf

complain here, but some do)

replay, because it tries to XLogInsert().

changes from the main FSM commit for some reason.