如何编写Zend DB查询以从列ID中选择所有内容?
到目前为止,我已经尝试过:
public function getLatestUserID()
{
$ids = $this->select()
->where('id = ?');
return $ids;
}
但无济于事。
答案 0 :(得分:1)
您只需要id
列,
您无法调用执行命令。
尝试:
//assuming you are using a DbTable model
public function getLatestUserID()
{
$ids = $this->fetchAll('id');
return $ids;
}
我会这样做,因为我使用select()对象:
public function getLatestUserID()
{
$select = $this->select();
//I'm not sure if $this will work in this contex but you can out the table name
$select->from(array($this), array('id'));
$ids = $this->fetchAll($select);
return $ids;
}
前两个示例应该只返回表格的id
列,现在,如果您确实要查询特定的id
:
public function getLatestUserID($id)
{
$select = $this->select();
$select->where('id = ?', $id);
//fetchAll() would still work here if we wanted multiple rows returned
//but fetchRow() for one row and fetchRowset() for multiple rows are probably
//more specific for this purpose.
$ids = $this->fetchRow($select);
return $ids;
}
答案 1 :(得分:1)
确保包含getLatestUserID的类确实扩展了Zend_Db_Table_Abstract:
$ids = $this->select()->where('id = ?');
无效,因为where('id =?');需要一个像where('id = ?', $id);
如果你想要的是最新插入的行的Id使用:
$lastInsertId = $this->getAdapter()->lastInsertId();
(但是如果你使用的是oracle数据库,这将无效,你应该使用$lastInsertId = $this->getAdapter()->lastSequenceId('USER_TABLE_SEQUENCE');
)