well as vacuum_cost_delay.  Since datestyle is a string variable,
this exercises memory allocation issues that might not appear when
modifying an integer GUC variable.  Also, we can observe the side
effects of changing datestyle to check that assign hooks are called
at the right times.

nonunique join value, leading to plan-choice-dependent results ... and
it seems some platforms will choose a different plan.  Tweak the test
so that it has well-defined results.  Per report from Olivier Prenant.

Merged dyntest.pgc and dyntest2.pgc.
Hopefully fixed the last Coverity reports (finally)

hash and array variables.  (regression output updated)

default values.

merely a matter of fixing the error check, since the underlying Portal
infrastructure already handles it.  This in turn allows these statements
to be used in some existing plpgsql and plperl contexts, such as a
plpgsql FOR loop.  Also, do some marginal code cleanup in places that
were being sloppy about distinguishing SELECT from SELECT INTO.

hashes.  Was causing regression failures.

failures.

default values.  Was causing regression failures.

< 	o Allow INSERT/UPDATE ... RETURNING new.col or old.col
<
< 	  This is useful for returning the auto-generated key for an INSERT.
< 	  One complication is how to handle rules that run as part of
< 	  the insert.
< 	  http://archives.postgresql.org/pgsql-patches/2005-07/msg00568.php
> 	o -Allow INSERT/UPDATE ... RETURNING new.col or old.col

plpgsql support to come later.  Along the way, convert execMain's
SELECT INTO support into a DestReceiver, in order to eliminate some ugly
special cases.

Jonah Harris and Tom Lane

Yoshiyuki Asaba

< 	o %Allow commenting of variables in postgresql.conf to restore them
> 	o -Allow commenting of variables in postgresql.conf to restore them

defaults.

Zdenek Kotala

The main reason for refactoring was that set_config_option() was too
overloaded function and its behavior did not consistent. Old version of
set_config_function hides some messages. For example if you type:

tcp_port = 5432.1

then old implementation ignore this error without any message to log
file in the signal context (configuration reload). Main problem was that
semantic analysis of postgresql.conf is not perform in the
ProcessConfigFile function, but in the set_config_options *after*
context check. This skipped check for variables with PG_POSTMASTER
context. There was request from Joachim Wieland to add more messages
about ignored changes in the config file as well.

Zdenek Kotala

Allow conversion from perl to postgresql array in OUT parameters. Second,
allow hash form output from procedures with one OUT argument.

Pavel Stehule

David Fetter

Ian Barwick

< * Allow encoding on a per-column basis
> * Allow encoding on a per-column basis optionally using the ICU library:
>   http://archives.postgresql.org/pgsql-patches/2005-08/msg00309.php
>   http://archives.postgresql.org/pgsql-patches/2006-03/msg00233.php

same data type and same typmod, we show that typmod as the output
typmod, rather than generic -1.  This responds to several complaints
over the past few years about UNIONs unexpectedly dropping length or
precision info.

comment.  8.1.X is not affected by this commit.

interface builds like libpq need it.

Backpatch addition to 8.1.X.

Greg Sabino Mullane

will fix current platypus build failure.

rounded down to zero.

Backpatch to 8.1.X.

>   http://archives.postgresql.org/pgsql-hackers/2006-08/msg00149.php

as micro-seconds, rather than as 100 microseconds, as it does now.  This
actually fixes all setitimer calls on Win32, but statement_timeout is
the most visible fix.

Backpatch to 8.1.X.  8.0 works as documented.

> 	  http://archives.postgresql.org/pgsql-performance/2004-08/msg00349.php

>
>
> Features We Do _Not_ Want
> =========================
>
> * All backends running as threads in a single process (not want)
>
>   This eliminates the process protection we get from the current setup.
>   Thread creation is usually the same overhead as process creation on
>   modern systems, so it seems unwise to use a pure threaded model.
>
> * Optimizer hints (not want)
>
>   Optimizer hints are used to work around problems in the optimizer.  We
>   would rather have the problems reported and fixed.
>   http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php

< 		  A package would be a schema with public/private variables,
> 		  A package would be a schema with session-local variables,
> 		  http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php