我使用 createCommand 并运行下面的查询,但我的项目中出现错误
$all_project_tasks = Yii::app()->db->createCommand("
set @prevOrder=0;
set @mm=0;
set@dt=0;
select * from project_task_user_id ptui right join
(select id,`desc`,due_time,list_id,if(@prevOrder=`order`,
@dt,@dt:=@dt+due_time) this_finish_due,if(@prevOrder=`order`,
@mm,if(@prevOrder=0,@mm,@mm:=@dt-due_time)) prev_due,@prevOrder:=`order` as `order`
from (select id,`desc`,due_time,`order`,list_id from project_task a
where a.list_id in (select id from project_list where project_id=1 )
and (a.due_time is not null) order by a.order asc,a.due_time desc ) as b) l
ON ptui.project_task = l.id where ptui.member_id =7 ")
->queryAll();
并收到此错误
SQLSTATE[HY000]: General error. The SQL statement executed was
为什么会出现这个错误?我哪里出错了? creatCommand 不支持 sql 中的 @variable ?
最佳答案
Yii 的 createCommand 是基于 PDO 的,因此不支持多个查询执行。
$all_project_tasks = Yii::app()->db->createCommand("set @prevOrder=0")->execute();
$all_project_tasks = Yii::app()->db->createCommand("set @mm=0")->execute();
$all_project_tasks = Yii::app()->db->createCommand("set @dt=0")->execute();
$all_project_tasks = Yii::app()->db->createCommand('select * from project_task_user_id ptui right join (select id,`desc`,due_time,list_id,if(@prevOrder=`order`,@dt,@dt:=@dt+due_time) this_finish_due,if(@prevOrder=`order`,@mm,if(@prevOrder=0,@mm,@mm:=@dt-due_time)) prev_due,@prevOrder:=`order` as `order`
from (select id,`desc`,due_time,`order`,list_id from project_task a where a.list_id in (select id from project_list where project_id=1 )and (a.due_time is not null) order by a.order asc,a.due_time desc ) as b) l
ON ptui.project_task = l.id where ptui.member_id =7')->queryAll();
我想这一定工作得很好。
关于php - 定义的变量不能与 yii 中的 createCommand 一起使用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29328694/