database update

functions.php

   function setUserSchoolRole ( $user_id, $school_id, ) {

                global $bp, $wpdb;

                if ( $user_id && $school_id ) {
                       $sql = $wpdb->prepare( "SELECT role_id FROM tl_user_role  WHERE user_id = %d AND school_id= %d ", $user_id, $school_id );
                       return $wpdb->query( $sql );
                }

                return false;
     }