has_or_relation example

            }

            $this->meta_query->parse_query_vars( $this->meta_query->queries );
        }

        if ( ! empty( $this->meta_query->queries ) ) {
            $clauses            = $this->meta_query->get_sql( 'user', $wpdb->users, 'ID', $this );
            $this->query_from  .= $clauses['join'];
            $this->query_where .= $clauses['where'];

            if ( $this->meta_query->has_or_relation() ) {
                $this->query_fields = 'DISTINCT ' . $this->query_fields;
            }
        }

        // Sorting.         $qv['order'] = isset( $qv['order'] ) ? strtoupper( $qv['order'] ) : '';
        $order       = $this->parse_order( $qv['order'] );

        if ( empty( $qv['orderby'] ) ) {
            // Default order is by 'user_login'.             $ordersby = array( 'user_login' => $order );
        }