CastSqlInterface.php

<?php

namespace Drupal\views\Plugin\views\query;


/**
 * Defines an interface for defining cast expressions in SQL.
 */
interface CastSqlInterface {
    
    /**
     * Returns a database expression to cast the field to int.
     *
     * @param $field string
     *   The database field to cast.
     *
     * @return string
     */
    public function getFieldAsInt(string $field) : string;

}