add distinct

booking.regn_form.inc

@@ -81,7 +81,8 @@ function _booking_ecclesia_name_autocomplete($string = "") {
   $sanitised_string .= "%";
   //watchdog('booking_debug', "<pre>Autocomplete checking for ecclesia matching:\n@info</pre>", array('@info' => print_r($sanitised_string, true)));
 
-	$query = db_select('booking_person', 'p')
+  $query = db_select('booking_person', 'p')
+          ->distinct('p.booking_ecclesia')
 					->fields('p', array('booking_ecclesia'))
 	        ->condition('p.booking_ecclesia', $sanitised_string, 'LIKE');
 	$result = $query->execute();