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>E.2. Release 9.2.23</A
></H1
><DIV
CLASS="FORMALPARA"
><P
><B
>Release date: </B
>2017-08-31</P
></DIV
><P
>   This release contains a small number of fixes from 9.2.22.
   For information about new features in the 9.2 major release, see
   <A
HREF="release-9-2.html"
>Section E.25</A
>.
  </P
><P
>   The <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> community will stop releasing updates
   for the 9.2.X release series in September 2017.
   Users are encouraged to update to a newer release branch soon.
  </P
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>E.2.1. Migration to Version 9.2.23</A
></H2
><P
>    A dump/restore is not required for those running 9.2.X.
   </P
><P
>    However, if you are upgrading from a version earlier than 9.2.22,
    see <A
HREF="release-9-2-22.html"
>Section E.3</A
>.
   </P
></DIV
><DIV
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><H2
CLASS="SECT2"
><A
NAME="AEN110893"
>E.2.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Show foreign tables
      in <TT
CLASS="STRUCTNAME"
>information_schema</TT
>.<TT
CLASS="STRUCTNAME"
>table_privileges</TT
>
      view (Peter Eisentraut)
     </P
><P
>      All other relevant <TT
CLASS="STRUCTNAME"
>information_schema</TT
> views include
      foreign tables, but this one ignored them.
     </P
><P
>      Since this view definition is installed by <SPAN
CLASS="APPLICATION"
>initdb</SPAN
>,
      merely upgrading will not fix the problem.  If you need to fix this
      in an existing installation, you can, as a superuser, do this
      in <SPAN
CLASS="APPLICATION"
>psql</SPAN
>:
</P><PRE
CLASS="PROGRAMLISTING"
>SET search_path TO information_schema;
CREATE OR REPLACE VIEW table_privileges AS
    SELECT CAST(u_grantor.rolname AS sql_identifier) AS grantor,
           CAST(grantee.rolname AS sql_identifier) AS grantee,
           CAST(current_database() AS sql_identifier) AS table_catalog,
           CAST(nc.nspname AS sql_identifier) AS table_schema,
           CAST(c.relname AS sql_identifier) AS table_name,
           CAST(c.prtype AS character_data) AS privilege_type,
           CAST(
             CASE WHEN
                  -- object owner always has grant options
                  pg_has_role(grantee.oid, c.relowner, 'USAGE')
                  OR c.grantable
                  THEN 'YES' ELSE 'NO' END AS yes_or_no) AS is_grantable,
           CAST(CASE WHEN c.prtype = 'SELECT' THEN 'YES' ELSE 'NO' END AS yes_or_no) AS with_hierarchy

    FROM (
            SELECT oid, relname, relnamespace, relkind, relowner, (aclexplode(coalesce(relacl, acldefault('r', relowner)))).* FROM pg_class
         ) AS c (oid, relname, relnamespace, relkind, relowner, grantor, grantee, prtype, grantable),
         pg_namespace nc,
         pg_authid u_grantor,
         (
           SELECT oid, rolname FROM pg_authid
           UNION ALL
           SELECT 0::oid, 'PUBLIC'
         ) AS grantee (oid, rolname)

    WHERE c.relnamespace = nc.oid
          AND c.relkind IN ('r', 'v', 'f')
          AND c.grantee = grantee.oid
          AND c.grantor = u_grantor.oid
          AND c.prtype IN ('INSERT', 'SELECT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER')
          AND (pg_has_role(u_grantor.oid, 'USAGE')
               OR pg_has_role(grantee.oid, 'USAGE')
               OR grantee.rolname = 'PUBLIC');</PRE
><P>
      This must be repeated in each database to be fixed,
      including <TT
CLASS="LITERAL"
>template0</TT
>.
     </P
></LI
><LI
><P
>      Clean up handling of a fatal exit (e.g., due to receipt
      of <SPAN
CLASS="SYSTEMITEM"
>SIGTERM</SPAN
>) that occurs while trying to execute
      a <TT
CLASS="COMMAND"
>ROLLBACK</TT
> of a failed transaction (Tom Lane)
     </P
><P
>      This situation could result in an assertion failure.  In production
      builds, the exit would still occur, but it would log an unexpected
      message about <SPAN
CLASS="QUOTE"
>"cannot drop active portal"</SPAN
>.
     </P
></LI
><LI
><P
>      Remove assertion that could trigger during a fatal exit (Tom Lane)
     </P
></LI
><LI
><P
>      Correctly identify columns that are of a range type or domain type over
      a composite type or domain type being searched for (Tom Lane)
     </P
><P
>      Certain <TT
CLASS="COMMAND"
>ALTER</TT
> commands that change the definition of a
      composite type or domain type are supposed to fail if there are any
      stored values of that type in the database, because they lack the
      infrastructure needed to update or check such values.  Previously,
      these checks could miss relevant values that are wrapped inside range
      types or sub-domains, possibly allowing the database to become
      inconsistent.
     </P
></LI
><LI
><P
>      Change <SPAN
CLASS="APPLICATION"
>ecpg</SPAN
>'s parser to allow <TT
CLASS="LITERAL"
>RETURNING</TT
>
      clauses without attached C variables (Michael Meskes)
     </P
><P
>      This allows <SPAN
CLASS="APPLICATION"
>ecpg</SPAN
> programs to contain SQL constructs
      that use <TT
CLASS="LITERAL"
>RETURNING</TT
> internally (for example, inside a CTE)
      rather than using it to define values to be returned to the client.
     </P
></LI
><LI
><P
>      Improve selection of compiler flags for PL/Perl on Windows (Tom Lane)
     </P
><P
>      This fix avoids possible crashes of PL/Perl due to inconsistent
      assumptions about the width of <TT
CLASS="TYPE"
>time_t</TT
> values.
      A side-effect that may be visible to extension developers is
      that <TT
CLASS="LITERAL"
>_USE_32BIT_TIME_T</TT
> is no longer defined globally
      in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> Windows builds.  This is not expected
      to cause problems, because type <TT
CLASS="TYPE"
>time_t</TT
> is not used
      in any <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> API definitions.
     </P
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