<p>If you want to do something specific with columns, you may write
your very own trigger function using plpgsql or other procedural
languages (but not SQL, unfortunately) and use it instead of
<em>tsearch2</em> trigger.</p>
<p>You could however call other stored procedures from within the
tsearch2 function. Lets say we want to create a function to remove
certain characters (like the @ symbol from all text).</p>
<pre>
       CREATE FUNCTION dropatsymbol(text) 
                     RETURNS text AS 'select re