values.  Point to /include/ntstatus.h for an exception list, rather than
a URL.

than hex codes, using FormatMessage().

which I had removed in the first cut of the EquivalenceClass rewrite to
simplify that patch a little.  But it's still important --- in a four-way
join problem mergejoinscansel() was eating about 40% of the planning time
according to gprof.  Also, improve the EquivalenceClass code to re-use
join RestrictInfos rather than generating fresh ones for each join
considered.  This saves some memory space but more importantly improves
the effectiveness of caching planning info in RestrictInfos.

exception value in hex, and give a URL where the value can be looked-up.

tuples, which is entirely possible with custom scripts (consider
RETURNING, EXPLAIN, etc).

columns procost and prorows, to allow simple user adjustment of the estimated
cost of a function call, as well as control of the estimated number of rows
returned by a set-returning function.  We might eventually wish to extend this
to allow function-specific estimation routines, but there seems to be
consensus that we should try a simple constant estimate first.  In particular
this provides a relatively simple way to control the order in which different
WHERE clauses are applied in a plan node, which is a Good Thing in view of the
fact that the recent EquivalenceClass planner rewrite made that much less
predictable than before.

mentioned before the system directories.

a couple of syscache lookups in make_pathkey_from_sortinfo().

>
>   http://archives.postgresql.org/pgsql-hackers/2006-12/msg01107.php

provide just a boolean 'amcanorder', instead of fields that specify the
sort operator strategy numbers.  We have decided to require ordering-capable
AMs to use btree-compatible strategy numbers, so the old fields are
overkill (and indeed misleading about what's allowed).

>
>   http://archives.postgresql.org/pgsql-hackers/2006-12/msg01188.php
>   http://archives.postgresql.org/pgsql-hackers/2007-01/msg00121.php

pgsql-patches discussion of September 20, 2006. Bump the catversion.

Backpatch to 8.2.X for new initdbs.

match the postgresql.conf file.  Also add units to descriptions that
lacked them.  Wording improvements.  Mention pg_settings.unit as the way
to find the default units for setting.

Backpatch to 8.2.X.

Previously, disabled triggers were not displayed any differently than
enabled ones, which was quite misleading. Patch from Brendan Jurd.

representation of equivalence classes of variables.  This is an extensive
rewrite, but it brings a number of benefits:
* planner no longer fails in the presence of "incomplete" operator families
that don't offer operators for every possible combination of datatypes.
* avoid generating and then discarding redundant equality clauses.
* remove bogus assumption that derived equalities always use operators
named "=".
* mergejoins can work with a variety of sort orders (e.g., descending) now,
instead of tying each mergejoinable operator to exactly one sort order.
* better recognition of redundant sort columns.
* can make use of equalities appearing underneath an outer join.

currentMarkData from IndexScanDesc to the opaque structs for the
AMs that need this information (currently gist and hash).

Patch from Heikki Linnakangas, fixes by Neil Conway.

rather than a value too high.

HTML in HTML mode. Patch from Jeremy Drake.

Backpatch to 8.2.

might lead to a previously installed libpq being used instead.  But we
don't actually have to link with libpq here at all, so remove it.

other test code.

function is_log_level_output(), for code clarity.

function xmlagg.

< first.
> first.  There is also a developer's wiki at
> http://developer.postgresql.org.

for its header comment.

> 	o Allow multiple vacuums so large tables do not starve small
> 	  tables
>
> 	  http://archives.postgresql.org/pgsql-general/2007-01/msg00031.php
>
> 	o Improve control of auto-vacuum
>
> 	  http://archives.postgresql.org/pgsql-hackers/2006-12/msg00876.php

"input" and "output" dirs be necessarily present.