Edit file File name : 20200609154515_AddHasAncestorsColumn.php Content :<?php namespace Yoast\WP\SEO\Config\Migrations; use Yoast\WP\Lib\Migrations\Migration; use Yoast\WP\Lib\Model; use Yoast\WP\SEO\WordPress\Wrapper; /** * Class AddHasAncestorsColumn. */ class AddHasAncestorsColumn extends Migration { /** * The plugin this migration belongs to. * * @var string */ public static $plugin = 'free'; /** * Migration up. * * @return void */ public function up() { $this->add_column( Model::get_table_name( 'Indexable' ), 'has_ancestors', 'boolean', [ 'default' => false, ] ); Wrapper::get_wpdb()->query( ' UPDATE ' . Model::get_table_name( 'Indexable' ) . ' SET has_ancestors = 1 WHERE id IN ( SELECT indexable_id FROM ' . Model::get_table_name( 'Indexable_Hierarchy' ) . ' ) ' ); } /** * Migration down. * * @return void */ public function down() { $this->remove_column( Model::get_table_name( 'Indexable' ), 'has_ancestors' ); } } Save