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><H1
><A
NAME="SQL-ALTERTSCONFIG"
></A
>ALTER TEXT SEARCH CONFIGURATION</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN65502"
></A
><H2
>Name</H2
>ALTER TEXT SEARCH CONFIGURATION -- change the definition of a text search configuration</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN65507"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>
ADD MAPPING FOR <TT
CLASS="REPLACEABLE"
><I
>token_type</I
></TT
> [, ... ] WITH <TT
CLASS="REPLACEABLE"
><I
>dictionary_name</I
></TT
> [, ... ]
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>
ALTER MAPPING FOR <TT
CLASS="REPLACEABLE"
><I
>token_type</I
></TT
> [, ... ] WITH <TT
CLASS="REPLACEABLE"
><I
>dictionary_name</I
></TT
> [, ... ]
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>
ALTER MAPPING REPLACE <TT
CLASS="REPLACEABLE"
><I
>old_dictionary</I
></TT
> WITH <TT
CLASS="REPLACEABLE"
><I
>new_dictionary</I
></TT
>
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>
ALTER MAPPING FOR <TT
CLASS="REPLACEABLE"
><I
>token_type</I
></TT
> [, ... ] REPLACE <TT
CLASS="REPLACEABLE"
><I
>old_dictionary</I
></TT
> WITH <TT
CLASS="REPLACEABLE"
><I
>new_dictionary</I
></TT
>
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
>
DROP MAPPING [ IF EXISTS ] FOR <TT
CLASS="REPLACEABLE"
><I
>token_type</I
></TT
> [, ... ]
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> RENAME TO <TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
>
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> OWNER TO <TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
>
ALTER TEXT SEARCH CONFIGURATION <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> SET SCHEMA <TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65530"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>ALTER TEXT SEARCH CONFIGURATION</TT
> changes the definition of
a text search configuration. You can modify
its mappings from token types to dictionaries,
or change the configuration's name or owner.
</P
><P
> You must be the owner of the configuration to use
<TT
CLASS="COMMAND"
>ALTER TEXT SEARCH CONFIGURATION</TT
>.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65536"
></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
configuration.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>token_type</I
></TT
></DT
><DD
><P
> The name of a token type that is emitted by the configuration's
parser.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>dictionary_name</I
></TT
></DT
><DD
><P
> The name of a text search dictionary to be consulted for the
specified token type(s). If multiple dictionaries are listed,
they are consulted in the specified order.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>old_dictionary</I
></TT
></DT
><DD
><P
> The name of a text search dictionary to be replaced in the mapping.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_dictionary</I
></TT
></DT
><DD
><P
> The name of a text search dictionary to be substituted for
<TT
CLASS="REPLACEABLE"
><I
>old_dictionary</I
></TT
>.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_name</I
></TT
></DT
><DD
><P
> The new name of the text search configuration.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_owner</I
></TT
></DT
><DD
><P
> The new owner of the text search configuration.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>new_schema</I
></TT
></DT
><DD
><P
> The new schema for the text search configuration.
</P
></DD
></DL
></DIV
><P
> The <TT
CLASS="LITERAL"
>ADD MAPPING FOR</TT
> form installs a list of dictionaries to be
consulted for the specified token type(s); it is an error if there is
already a mapping for any of the token types.
The <TT
CLASS="LITERAL"
>ALTER MAPPING FOR</TT
> form does the same, but first removing
any existing mapping for those token types.
The <TT
CLASS="LITERAL"
>ALTER MAPPING REPLACE</TT
> forms substitute <TT
CLASS="REPLACEABLE"
><I
>new_dictionary</I
></TT
> for <TT
CLASS="REPLACEABLE"
><I
>old_dictionary</I
></TT
> anywhere the latter appears.
This is done for only the specified token types when <TT
CLASS="LITERAL"
>FOR</TT
>
appears, or for all mappings of the configuration when it doesn't.
The <TT
CLASS="LITERAL"
>DROP MAPPING</TT
> form removes all dictionaries for the
specified token type(s), causing tokens of those types to be ignored
by the text search configuration. It is an error if there is no mapping
for the token types, unless <TT
CLASS="LITERAL"
>IF EXISTS</TT
> appears.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65589"
></A
><H2
>Examples</H2
><P
> The following example replaces the <TT
CLASS="LITERAL"
>english</TT
> dictionary
with the <TT
CLASS="LITERAL"
>swedish</TT
> dictionary anywhere that <TT
CLASS="LITERAL"
>english</TT
>
is used within <TT
CLASS="LITERAL"
>my_config</TT
>.
</P
><PRE
CLASS="PROGRAMLISTING"
>ALTER TEXT SEARCH CONFIGURATION my_config
ALTER MAPPING REPLACE english WITH swedish;</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65597"
></A
><H2
>Compatibility</H2
><P
> There is no <TT
CLASS="COMMAND"
>ALTER TEXT SEARCH CONFIGURATION</TT
> statement in
the SQL standard.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN65601"
></A
><H2
>See Also</H2
><A
HREF="sql-createtsconfig.html"
>CREATE TEXT SEARCH CONFIGURATION</A
>, <A
HREF="sql-droptsconfig.html"
>DROP TEXT SEARCH CONFIGURATION</A
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