Error: Table 'mydb.ajax' doesn't exist

[DataTables Server Side PHP][1]

When I try to use the default DataTables server side script I get Table 'mydb.ajax' doesn't exist. Needless to say, no data is being returned from the db.

The code I've actually edited in that file is:

/* Array of database columns which should be read and sent back to DataTables. Use a space where
    	 * you want to insert a non-database field (for example a counter or static image)
    	 */
    	$aColumns = array('person', 'object', 'location');
    	/* Indexed column (used for fast and accurate table cardinality) */
    	$sIndexColumn = "Key";
    	/* DB table to use */
    	$sTable = "ajax";
    	/* Database connection information */
    	$gaSql['user']       = "myuser";
    	$gaSql['password']   = "mypass";
    	$gaSql['db']         = "mydb";
    	$gaSql['server']     = "mysite.com";
    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
    	 * If you just want to use the basic configuration for DataTables with PHP server-side, there is
    	 * no need to edit below this line
    	 */

Yes...I've changed the vars to the real values for user, pass, db, and server. I'm calling this file via jquery like:

$(".easy-table").dataTable(
      "bProcessing": true,
      "bServerSide": true,
      "sAjaxSource": "phpprocess.php"
    );

I'm using just what I see in that one example so maybe it's not all inclusive and I'm still missing something.

[1]: http://datatables.net/examples/data_sources/server_side.html