php - Zend 1 - SQL FROM 表达式别名

Question

我正在查询的 FROM 子句中执行子选择。子选择被作为 Zend_Db_Expr 传递给查询，正如它应该的那样，但是我似乎无法为子选择指定别名。

示例:

$a = $adapter->select()->order('abc.id DESC');
$b = $adapter->select()->from('b');

$a->from(new Zend_Db_Expr("($b) AS xxx", 'xxx.id'); // does not work - always aliases as "t"

别名始终为“t”的原因来自以下行: https://github.com/zendframework/zf1/blob/master/library/Zend/Db/Select.php#L787

有什么想法吗？ 谢谢!

Answer 1

您可以这样指定自己的别名:

$a = $adapter->select()->order('abc.id DESC');
$b = $adapter->select()->from('b');

$a->from(array('xxx'=>$b), 'id');

结果是:SELECT `xxx`.`id` FROM (SELECT `b`.* FROM `b`) AS `xxx` ORDER BY `abc`.`id` DESC