Avoid failures when EXPLAIN tries to display a simple-form
CASE expression (Tom Lane)
If the CASE's test expression was a constant, the planner
could simplify the CASE into a form that confused the
expression-display code, resulting in "unexpected CASE WHEN
clause" errors.
Fix assignment to an array slice that is before the existing range
of subscripts (Tom Lane)
If there was a gap between the newly added subscripts and the first
pre-existing subscript, the code miscalculated how many entries needed
to be copied from the old array's null bitmap, potentially leading to
data corruption or crash.
Avoid unexpected conversion overflow in planner for very distant date
values (Tom Lane)
The date type supports a wider range of dates than can be
represented by the timestamp types, but the planner assumed it
could always convert a date to timestamp with impunity.
Fix pg_restore's text output for large objects (BLOBs)
when standard_conforming_strings is on (Tom Lane)
Although restoring directly to a database worked correctly, string
escaping was incorrect if pg_restore was asked for
SQL text output and standard_conforming_strings had been
enabled in the source database.
Fix erroneous parsing of tsquery values containing
... & !(subexpression) | ... (Tom Lane)
Queries containing this combination of operators were not executed
correctly. The same error existed in contrib/intarray's
query_int type and contrib/ltree's
ltxtquery type.
Fix buffer overrun in contrib/intarray's input function
for the query_int type (Apple)
This bug is a security risk since the function's return address could
be overwritten. Thanks to Apple Inc's security team for reporting this
issue and supplying the fix. (CVE-2010-4015)
Fix bug in contrib/seg's GiST picksplit algorithm
(Alexander Korotkov)
This could result in considerable inefficiency, though not actually
incorrect answers, in a GiST index on a seg column.
If you have such an index, consider REINDEXing it after
installing this update. (This is identical to the bug that was fixed in
contrib/cube in the previous update.)