# wordpress-seo/18.8/lib/migrations/constants.php

Yoast SEO – Advanced SEO with real-time guidance and built-in AI, version 18.8. 23 lines.

- Page: https://pluginprobe.com/plugins/wordpress-seo/18.8/code/lib/migrations/constants.php
- Raw: https://pluginprobe.com/plugins/wordpress-seo/18.8/raw/lib/migrations/constants.php
- Modified: 2021-05-18T13:42:44+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/wordpress-seo/18.8/code/lib/migrations/constants.php#L10-L20`.

```php
<?php

namespace Yoast\WP\Lib\Migrations;

/**
 * Yoast migrations constants class.
 */
class Constants {

	const MYSQL_MAX_IDENTIFIER_LENGTH = 64;
	const SQL_UNKNOWN_QUERY_TYPE      = 1;
	const SQL_SELECT                  = 2;
	const SQL_INSERT                  = 4;
	const SQL_UPDATE                  = 8;
	const SQL_DELETE                  = 16;
	const SQL_ALTER                   = 32;
	const SQL_DROP                    = 64;
	const SQL_CREATE                  = 128;
	const SQL_SHOW                    = 256;
	const SQL_RENAME                  = 512;
	const SQL_SET                     = 1024;
}

```