public function queryExists()
	{
		foreach ($this->selects as $select)
		{
			$result = $select->queryExists();

			if (is_null($result) || $result)
			{
				return $result;
			}
		}

		return false;
	}
public function queryExists()
	{
		foreach ($this->selects as $select)
		{
			$result = $select->queryExists();

			if (is_null($result) || $result)
			{
				return $result;
			}
		}

		return false;
	}
public function queryExists ( ) { foreach ( $ this -> selects as $ select ) { $ result = $ select -> queryExists ( ) ; if ( is_null ( $ result ) || $ result ) { return $ result ; } } return false ; }
Execute a SELECT EXISTS On each query. Will stop when at least one query returns true.
@return bool|null Null on error
Execute a SELECT EXISTS On each query . Will stop when at least one query returns true .