<sect1 id="pg-tsparser">

<title>pg_tsparser</title>

<para>

The <filename>pg_tsparser</filename> is a <productname>&productname;</productname> extension that

modifies the default text search parser. In addition to the default

search results, this extension also returns a single word in the

following cases:

<filename>pg_tsparser</filename> is a <productname>&productname;</productname> extension for text search.

This extension modifies the default text parsing strategy for words that include:

</para>

<itemizedlist spacing="compact">

<listitem>

<para>

words that includeunderscores

underscores

</para>

</listitem>

<listitem>

<para>

words that include numbers and letters separated by the hyphen

character

numbers and letters separated by the hyphen character

</para>

</listitem>

</itemizedlist>

<para>In addition to separate word parts returned by default, <filename>pg_tsparser</filename> also returns the whole word.</para>

<sect2 id="pg-tsparser-install">

<title>Installation and Setup</title>

<para>

<itemizedlist>

<listitem>

<para>Added <link linkend="pg-tsparser"><application>pg_tsparser</application></link> extension for text search.</para>

<para>In addition tothe default search results, this extensionalso returnsa single wordin the following cases:</para>

<para>In addition toseparate word parts returned by default, <application>pg_tsparser</application>also returnsthe whole wordif this word includes:</para>

<itemizedlist>

<listitem>

<para>words that includeunderscores</para>

<para>underscores</para>

</listitem>

<listitem>

<para>words that includenumbers and letters separated by the hyphen character</para>

<para>numbers and letters separated by the hyphen character</para>

</listitem>

</itemizedlist>

</listitem>