Release date: 2011-01-31
This release contains a variety of fixes from 8.2.19. For information about new features in the 8.2 major release, see Section E.229.
A dump/restore is not required for those running 8.2.X. However, if you are upgrading from a version earlier than 8.2.14, see Section E.215.
      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.)