獲取錯誤上的Yii像SQLSTATE [HY000]：常規錯誤時間：2014年不能執行查詢，而其他非緩衝查詢是活躍

Question

我得到確切的錯誤，如

SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.

> I am using Yii framework in my project. OS: Debian GNU/Linux 8 \n \l Php: PHP 5.6.13-0+deb8u1 Mysql: 4.2.12deb2 Database client version: libmysql - 5.5.44

我從數據庫獲取數據和導出爲CSV作爲每下面的代碼：

ini_set('memory_limit', '-1'); 
$cmd = Yii::app()->db->createCommand("select su.name as ConsultantName , su.Surname as ConsultantSurname,su.RegistrationDate as RegistrationDate,su.CardNumber as ConsultantCardNumber,su.SequenceNumber as ConsultantSequenceNumber, 
s.Name as StoreName,s.StoreAddress1 as StoreAddress,s.LeegraCode,s.LeegraRegion as Region , n.Name as Network, sg.Name as SuperGroup,sg.CardNumber as SuperGroupCardnumber,sg.SequenceNumber as SuperGroupSequenceNumber, s.ID as AccelerateID, 
manager.Name as StoreManagerName, manager.Surname as StoreManagerSurname, manager.CardNumber as ManagerCardNumber, manager.SequenceNumber as ManagerSequenceNumber,fun_total_claim_by_sustemuser(su.ID) as Total_number_of_claims_ever,fun_systemuser_register(su.ID) as Registered_AND_Activated_Yes_No 
from systemuser su 
inner join store s on s.ID = su.StoreID 
inner join network n on n.ID = su.NetworkID 
left join (select man.* from systemuser man inner join store store on store.ID = man.StoreID and RoleID = 3) manager on manager.StoreID = s.ID 
inner join supergroup sg on sg.ID = s.SuperGroupID 
where su.RoleID = 1"); 

Yii::import('ext.ECSVExport'); 
$csv = new ECSVExport($cmd); 
$content = $csv->toCSV(); 
$filename="StoreByUserByNetworkByManager.csv" ; 
Yii::app()->getRequest()->sendFile($filename, $content, "text/csv", false); 
exit(); 

此相同的代碼工作我的本地系統上，但新的服務器上不工作，因爲我已經上面給出的信息。 有沒有人知道什麼可能是一個問題得到這個錯誤？

Answer 1

試試你的createCmmand前加入這個

Yii::app()->db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);