我有疑问:
$sql = new Sql($this->tableGateway->getAdapter());
$select = $sql->select();
$select->from('table_1')
->join('table_2', 'table_2_se_id = table_2.se_id
and table_2_table_3_id = table_2.table_3_id',
'*', 'LEFT')
->join('table_3', 'table_2_table_3_id=table_3.id', '*', 'LEFT')
->join('table_4', 'table_4_id=table_4.id', '*', 'LEFT');
如何从table_4只获取一列(例如'name')?