~ubuntu-branches/ubuntu/oneiric/postgresql-9.1/oneiric-security : contents of doc/src/sgml/html/sql-altertsdictionary.html at revision 14

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><H1
><A
NAME="SQL-ALTERTSDICTIONARY"
></A
>ALTER TEXT SEARCH DICTIONARY</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN62582"
></A
><H2
>Name</H2
>ALTER TEXT SEARCH DICTIONARY&nbsp;--&nbsp;change the definition of a text search dictionary</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN62587"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER TEXT SEARCH DICTIONARY <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> (
    <TT
CLASS="REPLACEABLE"
><I
>option</I
></TT
> [ = <TT
CLASS="REPLACEABLE"
><I
>value</I
></TT
> ] [, ... ]
)
ALTER TEXT SEARCH DICTIONARY <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
>
ALTER TEXT SEARCH DICTIONARY <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> OWNER TO <TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
>
ALTER TEXT SEARCH DICTIONARY <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> SET SCHEMA <TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62598"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>ALTER TEXT SEARCH DICTIONARY</TT
> changes the definition of
   a text search dictionary.  You can change the dictionary's
   template-specific options, or change the dictionary's name or owner.
  </P
><P
>   You must be the owner of the dictionary to use
   <TT
CLASS="COMMAND"
>ALTER TEXT SEARCH DICTIONARY</TT
>.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62604"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
></DT
><DD
><P
>      The name (optionally schema-qualified) of an existing text search
      dictionary.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>option</I
></TT
></DT
><DD
><P
>      The name of a template-specific option to be set for this dictionary.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>value</I
></TT
></DT
><DD
><P
>      The new value to use for a template-specific option.
      If the equal sign and value are omitted, then any previous
      setting for the option is removed from the dictionary,
      allowing the default to be used.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></DT
><DD
><P
>      The new name of the text search dictionary.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
></DT
><DD
><P
>      The new owner of the text search dictionary.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></DT
><DD
><P
>      The new schema for the text search dictionary.
     </P
></DD
></DL
></DIV
><P
>   Template-specific options can appear in any order.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62638"
></A
><H2
>Examples</H2
><P
>   The following example command changes the stopword list
   for a Snowball-based dictionary.  Other parameters remain unchanged.
  </P
><PRE
CLASS="PROGRAMLISTING"
>ALTER TEXT SEARCH DICTIONARY my_dict ( StopWords = newrussian );</PRE
><P
>   The following example command changes the language option to dutch,
   and removes the stopword option entirely.
  </P
><PRE
CLASS="PROGRAMLISTING"
>ALTER TEXT SEARCH DICTIONARY my_dict ( language = dutch, StopWords );</PRE
><P
>   The following example command <SPAN
CLASS="QUOTE"
>"updates"</SPAN
> the dictionary's
   definition without actually changing anything.

</P><PRE
CLASS="PROGRAMLISTING"
>ALTER TEXT SEARCH DICTIONARY my_dict ( dummy );</PRE
><P>

   (The reason this works is that the option removal code doesn't complain
   if there is no such option.)  This trick is useful when changing
   configuration files for the dictionary: the <TT
CLASS="COMMAND"
>ALTER</TT
> will
   force existing database sessions to re-read the configuration files,
   which otherwise they would never do if they had read them earlier.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62648"
></A
><H2
>Compatibility</H2
><P
>   There is no <TT
CLASS="COMMAND"
>ALTER TEXT SEARCH DICTIONARY</TT
> statement in
   the SQL standard.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN62652"
></A
><H2
>See Also</H2
><A
HREF="sql-createtsdictionary.html"
>CREATE TEXT SEARCH DICTIONARY</A
>, <A
HREF="sql-droptsdictionary.html"
>DROP TEXT SEARCH DICTIONARY</A
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