--TEST--
don't create second join if table or alias was joined
--FILE--
<?php
include_once dirname(__FILE__) . "/connect.inc.php";
/* @var Envms\FluentPDO\Query */

$query = $fluent->from('article')->innerJoin('user AS author ON article.user_id = author.id')
		->select('author.name');
echo $query->getQuery() . "\n";
$query = $fluent->from('article')->innerJoin('user ON article.user_id = user.id')
		->select('user.name');
echo $query->getQuery() . "\n";
$query = $fluent->from('article')->innerJoin('user AS author ON article.user_id = author.id')
		->select('author.country.name');
echo $query->getQuery() . "\n";
$query = $fluent->from('article')->innerJoin('user ON article.user_id = user.id')
		->select('user.country.name');
echo $query->getQuery() . "\n";
?>
--EXPECTF--
SELECT article.*, author.name
FROM article
    INNER JOIN user AS author ON article.user_id = author.id
SELECT article.*, user.name
FROM article
    INNER JOIN user ON article.user_id = user.id
SELECT article.*, country.name
FROM article
    INNER JOIN user AS author ON article.user_id = author.id
    LEFT JOIN country ON country.id = author.country_id
SELECT article.*, country.name
FROM article
    INNER JOIN user ON article.user_id = user.id
    LEFT JOIN country ON country.id = user.country_id