Fix EvalPlanQual rechecks involving CTE scans (Tom Lane)
The recheck would always see the CTE as returning no rows, typically
leading to failure to update rows that were recently updated.
Fix improper repetition of previous results from hashed aggregation in
a subquery (Andrew Gierth)
The test to see if we can reuse a previously-computed hash table of
the aggregate state values neglected the possibility of an outer query
reference appearing in an aggregate argument expression. A change in
the value of such a reference should lead to recalculating the hash
table, but did not.
Fix timeout length when VACUUM is waiting for exclusive
table lock so that it can truncate the table (Simon Riggs)
The timeout was meant to be 50 milliseconds, but it was actually only
50 microseconds, causing VACUUM to give up on truncation
much more easily than intended. Set it to the intended value.
Remove artificial restrictions on the values accepted
by numeric_in() and numeric_recv()
(Tom Lane)
We allow numeric values up to the limit of the storage format (more
than 1e100000), so it seems fairly pointless
that numeric_in() rejected scientific-notation exponents
above 1000. Likewise, it was silly for numeric_recv() to
reject more than 1000 digits in an input value.
Avoid very-low-probability data corruption due to testing tuple
visibility without holding buffer lock (Thomas Munro, Peter Geoghegan,
Tom Lane)
Fix file descriptor leakage when truncating a temporary relation of
more than 1GB (Andres Freund)
Disallow starting a standalone backend with standby_mode
turned on (Michael Paquier)
This can't do anything useful, since there will be no WAL receiver
process to fetch more WAL data; and it could result in misbehavior
in code that wasn't designed with this situation in mind.
Don't try to share SSL contexts across multiple connections
in libpq (Heikki Linnakangas)
This led to assorted corner-case bugs, particularly when trying to use
different SSL parameters for different connections.
Avoid corner-case memory leak in libpq (Tom Lane)
The reported problem involved leaking an error report
during PQreset(), but there might be related cases.
Make ecpg's --help and --version
options work consistently with our other executables (Haribabu Kommi)
Fix contrib/intarray/bench/bench.pl to print the results
of the EXPLAIN it does when given the -e option
(Daniel Gustafsson)
Prevent failure of obsolete dynamic time zone abbreviations (Tom Lane)
If a dynamic time zone abbreviation does not match any entry in the
referenced time zone, treat it as equivalent to the time zone name.
This avoids unexpected failures when IANA removes abbreviations from
their time zone database, as they did in tzdata
release 2016f and seem likely to do again in the future. The
consequences were not limited to not recognizing the individual
abbreviation; any mismatch caused
the pg_timezone_abbrevs view to fail altogether.
Update time zone data files to tzdata release 2016h
for DST law changes in Palestine and Turkey, plus historical
corrections for Turkey and some regions of Russia.
Switch to numeric abbreviations for some time zones in Antarctica,
the former Soviet Union, and Sri Lanka.
The IANA time zone database previously provided textual abbreviations
for all time zones, sometimes making up abbreviations that have little
or no currency among the local population. They are in process of
reversing that policy in favor of using numeric UTC offsets in zones
where there is no evidence of real-world use of an English
abbreviation. At least for the time being, PostgreSQL
will continue to accept such removed abbreviations for timestamp input.
But they will not be shown in the pg_timezone_names
view nor used for output.
In this update, AMT is no longer shown as being in use to
mean Armenia Time. Therefore, we have changed the Default
abbreviation set to interpret it as Amazon Time, thus UTC-4 not UTC+4.