number of openable files and the number already opened. This eliminates
depending on sysconf(_SC_OPEN_MAX), and allows much saner behavior on
platforms where open-file slots are used up by semaphores.
vacuum delay feature, including updating the docs for Tom's recent
improvements. There is still more work to be done here: for example,
adding some more information on the practical use of cost-based
vacuum delay to the "maintenance" section would probably be a good
idea.
This commit teaches ANALYZE to store such stats in pg_statistic, but
nothing is done yet about teaching the planner to use 'em.
Also, repair longstanding oversight in separate ANALYZE command: it
updated the pg_class.relpages and reltuples counts for the table proper,
but not for indexes.
> momjian@svr1.postgresql.org (Bruce Momjian) writes:
>> someone asked me about the FK deadlock fix, mentioned in the 7.3.3
>> release notes as 3rd change:
>> http://www.postgresql.org/docs/current/static/release-7-3-3.html
>> Actually, that fix was available with 7.4, not 7.3. Don't know if we can
>> retroactively change the release-notes though.
>
> This is completely erroneous, please undo it.
>
> 2003-05-21 14:14 tgl
>
> * src/: backend/utils/adt/ri_triggers.c,
> test/regress/expected/foreign_key.out (REL7_3_STABLE): Back-patch
> Jan's fix to avoid primary key lookup (and lock) if foreign key
> does not change on UPDATE.
Oh ... didn't know that you did a backpatch. Sorry
Jan
someone asked me about the FK deadlock fix, mentioned in the 7.3.3
release notes as 3rd change:
http://www.postgresql.org/docs/current/static/release-7-3-3.html
Actually, that fix was available with 7.4, not 7.3. Don't know if we can
retroactively change the release-notes though.
On Mon, 2004-01-26 at 21:28, Peter Eisentraut wrote:
> Christophe Combelles wrote:
> > At the bottom of this doc file :
> > file:///usr/share/doc/postgresql-doc/html/tutorial-createdb.html
> > "and it also happens that that user always has permission"
> > ---- x2
> The first "that" serves as a conjuction, the second one serves as an
> article. Looks correct to me.
A better workaround for the sentence would be something like:
"and it also happens that the user always has permission"
Looks easier to read, I think.
Enver ALTIN (a.k.a. skyblue)
Make btree index creation and initial validation of foreign-key constraints
use maintenance_work_mem rather than work_mem as their memory limit.
Add some code to guc.c to allow these variables to be referenced by their
old names in SHOW and SET commands, for backwards compatibility.
to handle memory management for char pointers returned by libpq functions.
Original patch by Gavin Sherry, some tweaking and consistency improvements
by Neil Conway.
that it's good to join where there are join clauses rather than where there
are not. Also enable it to generate bushy plans at need, so that it doesn't
fail in the presence of multiple IN clauses containing sub-joins. These
changes appear to improve the behavior enough that we can substantially reduce
the default pool size and generations count, thereby decreasing the runtime,
and yet get as good or better plans as we were getting in 7.4. Consequently,
adjust the default GEQO parameters. I also modified the way geqo_effort is
used so that it affects both population size and number of generations;
it's now useful as a single control to adjust the GEQO runtime-vs-plan-quality
tradeoff. Bump geqo_threshold to 12, since even with these changes GEQO
seems to be slower than the regular planner at 11 relations.
default value for geqo_effort is supposed to be 40, not 1. The actual
'genetic' component of the GEQO algorithm has been practically disabled
since 7.1 because of this mistake. Improve documentation while at it.
source the \copy came from. Also, fix prompting logic so that initial
and per-line prompts appear for all cases of reading from an interactive
terminal. Patch by Mark Feit, with some kibitzing by Tom Lane.
characters, as for fancy colorized prompts. This was nearly a direct
lift from bash-2.05b's lib/readline/display.c, per guidance from Chet Ramey.
Reece Hart
