/**
  * testing nested subquery (query, which uses subquery, which uses subquery) and checking, that conditions are correct (for use in prepared queries)
  */
 public function testSubqueryWithConditions()
 {
     $field1 = new Field('id', 0);
     $subq2 = new SelectQuery(array('bans'));
     $subq2->setSelect(array($field1));
     $subq2->setWhere(new Condition('=', new Field('abc'), 10));
     $subq = new SelectQuery(array('users'));
     $subq->setSelect(array($field1));
     $subq->setWhere(new AndOp(new Condition('>', new Field('age'), 14), new Condition('in', new Field('id'), $subq2), new Condition('=', new Field('regdt'), '2009-01-01')));
     $q = new SelectQuery(array('posts'));
     $q->setWhere(new AndOp(new Condition('>', new Field('comment'), 1), new Condition('in', new Field('user_id'), $subq), new Condition('=', new Field('funny'), 1)));
     $this->assertEquals('SELECT `t0`.* FROM `posts` AS `t0` WHERE (`t0`.`comment` > :p1 AND `t0`.`user_id` IN (SELECT `t0`.`id` FROM `users` AS `t0` WHERE (`t0`.`age` > :p2 AND `t0`.`id` IN (SELECT `t0`.`id` FROM `bans` AS `t0` WHERE `t0`.`abc` = :p3) AND `t0`.`regdt` = :p4)) AND `t0`.`funny` = :p5)', $q->sql());
 }
 public function testSqlFunctions()
 {
     $f = new SqlFunction('substring', array(new Field('name'), 5, 2));
     $params = array();
     $this->assertEquals('SUBSTRING(`t0`.`name`, 5, 2)', $f->getSql($params));
     $this->assertEquals('substring', $f->getName());
     try {
         $f = new SqlFunction('there_is_no_such_function', new Field('name'));
         $this->fail();
     } catch (InvalidArgumentException $e) {
     }
     try {
         $f = new SqlFunction('substring', new AndOp(array()));
         $this->fail('wrong value accepted');
     } catch (InvalidArgumentException $e) {
     }
     $q = new SelectQuery('test');
     $q->setWhere(new Condition('>', new SqlFunction('length', new Field('foo')), 5));
     $params = array();
     $this->assertEquals('SELECT `t0`.* FROM `test` AS `t0` WHERE LENGTH(`t0`.`foo`) > :p1', $q->sql());
     $parameters = $q->parameters();
     $this->assertEquals('5', $parameters[':p1']);
 }