ok
Direktori : /opt/alt/postgresql11/usr/share/doc/alt-postgresql11-9.2.24/html/ |
Current File : //opt/alt/postgresql11/usr/share/doc/alt-postgresql11-9.2.24/html/sql-altertsdictionary.html |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ALTER TEXT SEARCH DICTIONARY</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="ALTER TEXT SEARCH CONFIGURATION" HREF="sql-altertsconfig.html"><LINK REL="NEXT" TITLE="ALTER TEXT SEARCH PARSER" HREF="sql-altertsparser.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="REFENTRY" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="ALTER TEXT SEARCH CONFIGURATION" HREF="sql-altertsconfig.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="ALTER TEXT SEARCH PARSER" HREF="sql-altertsparser.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-ALTERTSDICTIONARY" ></A >ALTER TEXT SEARCH DICTIONARY</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN65613" ></A ><H2 >Name</H2 >ALTER TEXT SEARCH DICTIONARY -- change the definition of a text search dictionary</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN65618" ></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="AEN65629" ></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="AEN65635" ></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="AEN65669" ></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 <TT CLASS="LITERAL" >dutch</TT >, 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="AEN65680" ></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="AEN65684" ></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 ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sql-altertsconfig.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sql-altertsparser.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ALTER TEXT SEARCH CONFIGURATION</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ALTER TEXT SEARCH PARSER</TD ></TR ></TABLE ></DIV ></BODY ></HTML >