CONSTRAINT, rather than affecting all constraints in all schemas (which
is what we used to do).  Also allow schema specifications.

Kris Jurka

shutdown, or when requested by a backend:

It changes so the file is only written once every 5 minutes (changeable
of course, I just picked something) instead of once every half second.
It's still written when the stats collector shuts down, just as before.
And it is now also written on backend request. A backend requests a
rewrite by simply sending a special stats message. It operates on the
assumption that the backends aren't actually going to read the
statistics file very often, compared to how frequent it's written today.

Magnus Hagander

Philip Yarra

improve examples.

Mark Kirkwood

pg_freespacemap_relations and pg_freespacemap_pages.

Mark Kirkwood

tracks index pages, not free space on pages):

1/ Index free bytes set to NULL
2/ Comment added to the README briefly mentioning the index business
3/ Columns reordered more logically
4/ 'Blockid' column removed
5/ Free bytes column renamed to just 'bytes' instead of 'blockfreebytes'

Mark Kirkwood

pg_resetxlog.

Simon

Matteo Beccati

information, and add a -r option to reset pg_control without affecting
xlog.

yuanjia lee

* -Allow WAL information to recover corrupted pg_controldata

set to the large object context ("fscxt"), as this is inevitably a source of
transaction-duration memory leaks.  Not sure why we'd not noticed it before;
maybe people weren't touching a whole lot of LOs in the same transaction
before the 8.1 pg_dump changes.  Per report from Wayne Conrad.

Backpatched as far as 8.1, but the problem doubtless goes all the way back.
I'm disinclined to spend the time to try to verify that the older branches
would still work if patched, seeing that this code was significantly modified
for 8.0 and again for 8.1, and that we don't have any trouble reports before
8.1.  (Maybe the leaks were smaller before?)

thereby saving a visit to the metapage in most index searches/updates.
This wouldn't actually save any I/O (since in the old regime the metapage
generally stayed in cache anyway), but it does provide a useful decrease
in bufmgr traffic in high-contention scenarios.  Per my recent proposal.

implied by the predicate of a partial index being used to scan a table.
However, this optimization is unsafe in an UPDATE, DELETE, or SELECT FOR
UPDATE query, because the quals need to be rechecked by EvalPlanQual if
there's an update conflict.  Per example from Jean-Samuel Reynaud.

configure.

equals sign.

 David Wheeler

documentation sections.  Also update SET/RESET to be consistent.

Nicolas Barbier

use RESET CONNECTION:

< * Add RESET SESSION command to reset all session state
> * Add RESET CONNECTION command to reset all session state
447c447
<   notify the protocol when a RESET SESSION command is used.
>   notify the protocol when a RESET CONNECTION command is used.

< * Add RESET CONNECTION command to reset all session state
> * Add RESET SESSION command to reset all session state
447c447
<   notify the protocol when a RESET CONNECTION command is used.
>   notify the protocol when a RESET SESSION command is used.

Hans-J?rgen Sch?nig

< 	o %Prevent child tables from altering or dropping constraints
<           like CHECK that were inherited from the parent table
< 	  like CHECK that are inherited by child tables
<
< 	  Dropping constraints should only be possible with CASCADE.
<
> 	  like CHECK that are inherited by child tables unless CASCADE
> 	  is used
> 	o %Prevent child tables from altering or dropping constraints
>           like CHECK that were inherited from the parent table

(pgsql-committers@postgresql.org).

> * -Add transaction_timestamp(), statement_timestamp(), clock_timestamp()

transaction_timestamp() (just like now()).

Also update statement_timeout() to mention it is statement arrival time
that is measured.

Catalog version updated.

        o Support ISO INTERVAL syntax if units cannot be determined from
          the string, and are supplied after the string

          The SQL standard states that the units after the string specify
          the units of the string, e.g. INTERVAL '2' MINUTE should
          return '00:02:00'.  The current behavior has the units
          restrict the interval value to the specified unit or unit range,
          INTERVAL '70' SECOND returns '00:00:10'.

          For syntax that isn't uniquely ISO or PG syntax, like '1' or
          '1:30', treat as ISO if there is a range specification clause,
          and as PG if there no clause is present, e.g. interpret
          '1:30' MINUTE TO SECOND as '1 minute 30 seconds', and
          interpret '1:30' as '1 hour, 30 minutes'.

          This makes common cases like SELECT INTERVAL '1' MONTH
          SQL-standard results.  The SQL standard supports a limited
          number of unit combinations and doesn't support unit names
          in the string.  The PostgreSQL syntax is more flexible in
          the range of units supported, e.g. PostgreSQL supports
          '1 year 1 hour', while the SQL standard does not.

   o -Add support for day-time syntax, INTERVAL '1 2:03:04'DAY TO
      SECOND

     o -Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO
        SECOND

Report by Kris Jurka

accuracy expected by the regression tests.  Per suggestion from
Martijn van Oosterhout.