I have spent hours trying to get URL filtering to work on a MYSQL table using a query and a view. Column and Global filtering works fine in the preview mode of wpdatatables as well as the page where the table's shortcode is placed. I just can't get a pre-filter (?wdt_search   or column_search) to work via placing it in the URL to the page where the shortcode of the table exists. I have re-named the column headings to eliminate spaces and any other special characters.  I've done everything the documentation says like enabling 'Advanced column Filters'. I am at a loss. I can't get URL filtering to work using a competitor (wpdata access) either, it does the same thing. Where am I going wrong?  Hank