title: How to get SQL generated by IMPORT FOREIGN SCHEMA?
body: <p>When I do <code>import foreign schema constructor from server mysql_svr into mysql_fdw;</code> I get:</p>
  
  <pre><code>ERROR:  type "set" does not exist
  LINE 6:   type set NOT NULL,
                 ^
  QUERY:  CREATE FOREIGN TABLE search_requests (
    id int NOT NULL,
    ctime timestamp NOT NULL,
    site_id int NOT NULL,
    query_id int NOT NULL,
    type set NOT NULL,
    page smallint NOT NULL
  ) SERVER mysql_svr OPTIONS (dbname 'constructor', table_name 'search_requests');
  
  CONTEXT:  importing foreign table "search_requests"
  </code></pre>
  
  <p>The source table is:</p>
  
  <pre><code>CREATE TABLE `search_requests` (
    `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
    `ctime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `site_id` int(11) NOT NULL,
    `query_id` int(10) unsigned NOT NULL,
    `type` set('content','catalog','gallery') NOT NULL,
    `page` tinyint(3) unsigned NOT NULL,
    PRIMARY KEY (`id`),
    KEY `site` (`site_id`)
  ) ENGINE=InnoDB AUTO_INCREMENT=391 DEFAULT CHARSET=utf8
  </code></pre>
  
  <p>May I get SQL generated by IMPORT FOREIGN SCHEMA make all fixes and run it manually?</p>