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><H1
><A
NAME="SQL-IMPORTFOREIGNSCHEMA"
></A
>IMPORT FOREIGN SCHEMA</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN89188"
></A
><H2
>Name</H2
>IMPORT FOREIGN SCHEMA&nbsp;--&nbsp;import table definitions from a foreign server</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN89191"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>IMPORT FOREIGN SCHEMA <TT
CLASS="REPLACEABLE"
><I
>remote_schema</I
></TT
>
    [ { LIMIT TO | EXCEPT } ( <TT
CLASS="REPLACEABLE"
><I
>table_name</I
></TT
> [, ...] ) ]
    FROM SERVER <TT
CLASS="REPLACEABLE"
><I
>server_name</I
></TT
>
    INTO <TT
CLASS="REPLACEABLE"
><I
>local_schema</I
></TT
>
    [ OPTIONS ( <TT
CLASS="REPLACEABLE"
><I
>option</I
></TT
> '<TT
CLASS="REPLACEABLE"
><I
>value</I
></TT
>' [, ... ] ) ]</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-IMPORTFOREIGNSCHEMA-DESCRIPTION"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>IMPORT FOREIGN SCHEMA</TT
> creates foreign tables that
   represent tables existing on a foreign server.  The new foreign tables
   will be owned by the user issuing the command and are created with
   the correct column definitions and options to match the remote tables.
  </P
><P
>   By default, all tables and views existing in a particular schema on the
   foreign server are imported.  Optionally, the list of tables can be limited
   to a specified subset, or specific tables can be excluded.  The new foreign
   tables are all created in the target schema, which must already exist.
  </P
><P
>   To use <TT
CLASS="COMMAND"
>IMPORT FOREIGN SCHEMA</TT
>, the user must have
   <TT
CLASS="LITERAL"
>USAGE</TT
> privilege on the foreign server, as well as
   <TT
CLASS="LITERAL"
>CREATE</TT
> privilege on the target schema.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN89208"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>remote_schema</I
></TT
></DT
><DD
><P
>      The remote schema to import from. The specific meaning of a remote schema
      depends on the foreign data wrapper in use.
     </P
></DD
><DT
><TT
CLASS="LITERAL"
>LIMIT TO ( <TT
CLASS="REPLACEABLE"
><I
>table_name</I
></TT
> [, ...] )</TT
></DT
><DD
><P
>      Import only foreign tables matching one of the given table names.
      Other tables existing in the foreign schema will be ignored.
     </P
></DD
><DT
><TT
CLASS="LITERAL"
>EXCEPT ( <TT
CLASS="REPLACEABLE"
><I
>table_name</I
></TT
> [, ...] )</TT
></DT
><DD
><P
>      Exclude specified foreign tables from the import.  All tables
      existing in the foreign schema will be imported except the
      ones listed here.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>server_name</I
></TT
></DT
><DD
><P
>      The foreign server to import from.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>local_schema</I
></TT
></DT
><DD
><P
>      The schema in which the imported foreign tables will be created.
     </P
></DD
><DT
><TT
CLASS="LITERAL"
>OPTIONS ( <TT
CLASS="REPLACEABLE"
><I
>option</I
></TT
> '<TT
CLASS="REPLACEABLE"
><I
>value</I
></TT
>' [, ...] )</TT
></DT
><DD
><P
>      Options to be used during the import.
      The allowed option names and values are specific to each foreign
      data wrapper.
     </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-IMPORTFOREIGNSCHEMA-EXAMPLES"
></A
><H2
>Examples</H2
><P
>   Import table definitions from a remote schema <TT
CLASS="STRUCTNAME"
>foreign_films</TT
>
   on server <TT
CLASS="STRUCTNAME"
>film_server</TT
>, creating the foreign tables in
   local schema <TT
CLASS="STRUCTNAME"
>films</TT
>:

</P><PRE
CLASS="PROGRAMLISTING"
>IMPORT FOREIGN SCHEMA foreign_films
    FROM SERVER film_server INTO films;</PRE
><P>
   </P
><P
>   As above, but import only the two tables <TT
CLASS="STRUCTNAME"
>actors</TT
> and
   <TT
CLASS="LITERAL"
>directors</TT
> (if they exist):

</P><PRE
CLASS="PROGRAMLISTING"
>IMPORT FOREIGN SCHEMA foreign_films LIMIT TO (actors, directors)
    FROM SERVER film_server INTO films;</PRE
><P>
   </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SQL-IMPORTFOREIGNSCHEMA-COMPATIBILITY"
></A
><H2
>Compatibility</H2
><P
>   The <TT
CLASS="COMMAND"
>IMPORT FOREIGN SCHEMA</TT
> command conforms to the
   <ACRONYM
CLASS="ACRONYM"
>SQL</ACRONYM
> standard, except that the <TT
CLASS="LITERAL"
>OPTIONS</TT
>
   clause is a <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> extension.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN89263"
></A
><H2
>See Also</H2
><A
HREF="sql-createforeigntable.html"
>CREATE FOREIGN TABLE</A
>, <A
HREF="sql-createserver.html"
>CREATE SERVER</A
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