Current File : //opt/alt/postgresql11/usr/share/doc/alt-postgresql11-9.2.24/html/sql-createtsparser.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>CREATE TEXT SEARCH PARSER</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="CREATE TEXT SEARCH DICTIONARY"
HREF="sql-createtsdictionary.html"><LINK
REL="NEXT"
TITLE="CREATE TEXT SEARCH TEMPLATE"
HREF="sql-createtstemplate.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="CREATE TEXT SEARCH DICTIONARY"
HREF="sql-createtsdictionary.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="CREATE TEXT SEARCH TEMPLATE"
HREF="sql-createtstemplate.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="SQL-CREATETSPARSER"
></A
>CREATE TEXT SEARCH PARSER</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN71653"
></A
><H2
>Name</H2
>CREATE TEXT SEARCH PARSER -- define a new text search parser</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN71658"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>CREATE TEXT SEARCH PARSER <TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
> (
START = <TT
CLASS="REPLACEABLE"
><I
>start_function</I
></TT
> ,
GETTOKEN = <TT
CLASS="REPLACEABLE"
><I
>gettoken_function</I
></TT
> ,
END = <TT
CLASS="REPLACEABLE"
><I
>end_function</I
></TT
> ,
LEXTYPES = <TT
CLASS="REPLACEABLE"
><I
>lextypes_function</I
></TT
>
[, HEADLINE = <TT
CLASS="REPLACEABLE"
><I
>headline_function</I
></TT
> ]
)</PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71666"
></A
><H2
>Description</H2
><P
> <TT
CLASS="COMMAND"
>CREATE TEXT SEARCH PARSER</TT
> creates a new text search
parser. A text search parser defines a method for splitting a text
string into tokens and assigning types (categories) to the tokens.
A parser is not particularly useful by itself, but must be bound into a
text search configuration along with some text search dictionaries
to be used for searching.
</P
><P
> If a schema name is given then the text search parser is created in the
specified schema. Otherwise it is created in the current schema.
</P
><P
> You must be a superuser to use <TT
CLASS="COMMAND"
>CREATE TEXT SEARCH PARSER</TT
>.
(This restriction is made because an erroneous text search parser
definition could confuse or even crash the server.)
</P
><P
> Refer to <A
HREF="textsearch.html"
>Chapter 12</A
> for further information.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71675"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="REPLACEABLE"
><I
>name</I
></TT
></DT
><DD
><P
> The name of the text search parser to be created. The name can be
schema-qualified.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>start_function</I
></TT
></DT
><DD
><P
> The name of the start function for the parser.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>gettoken_function</I
></TT
></DT
><DD
><P
> The name of the get-next-token function for the parser.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>end_function</I
></TT
></DT
><DD
><P
> The name of the end function for the parser.
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>lextypes_function</I
></TT
></DT
><DD
><P
> The name of the lextypes function for the parser (a function that
returns information about the set of token types it produces).
</P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>headline_function</I
></TT
></DT
><DD
><P
> The name of the headline function for the parser (a function that
summarizes a set of tokens).
</P
></DD
></DL
></DIV
><P
> The function names can be schema-qualified if necessary. Argument types
are not given, since the argument list for each type of function is
predetermined. All except the headline function are required.
</P
><P
> The arguments can appear in any order, not only the one shown above.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71710"
></A
><H2
>Compatibility</H2
><P
> There is no
<TT
CLASS="COMMAND"
>CREATE TEXT SEARCH PARSER</TT
> statement in the SQL
standard.
</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71714"
></A
><H2
>See Also</H2
><A
HREF="sql-altertsparser.html"
>ALTER TEXT SEARCH PARSER</A
>, <A
HREF="sql-droptsparser.html"
>DROP TEXT SEARCH PARSER</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-createtsdictionary.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-createtstemplate.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>CREATE TEXT SEARCH DICTIONARY</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"
>CREATE TEXT SEARCH TEMPLATE</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
Mini Shell