[英]perform inner Join for 3 tables in EF
Hello i'm trying to implement inner join for three tables I start with two tables it gives me the appropriate result.你好,我正在尝试为三个表实现内部连接,我从两个表开始,它给了我适当的结果。
But i don't know how to implement join for three tables?但是我不知道如何实现三个表的连接? could anyone help?
有人可以帮忙吗?
This is the select statement i would like to do it in EF:这是我想在 EF 中执行的选择语句:
SELECT
capt_ar AS VehicleState,
cont_name,
vehl_drivername,
vehl_name,
vehl_entrancedate,
vehl_customsdec,
cont_rampid
FROM Container
INNER JOIN
Vehicle ON Container.cont_vehicleid = Vehicle.vehl_VehicleID
INNER JOIN
Custom_Captions ON Vehicle.vehl_state = Custom_Captions.Capt_Code
WHERE capt_family = 'vehl_state'
AND vehl_Deleted IS NULL AND cont_Deleted IS NULL
AND vehl_ClearanceCompany = 471
Updated: Query Result in SQL server
更新:SQL 服务器中的查询结果
Update: this is what i tried to do but no output
更新:这是我试图做但没有输出
var result = (from cont in db.Containers
join veh in db.Vehicles on cont.cont_vehicleid equals veh.vehl_VehicleID
join cap in db.Custom_Captions on veh.vehl_state equals cap.Capt_Code
where cap.Capt_Family == "vehl_state && veh.vehl_Deleted == null && cont.cont_Deleted == null && veh.vehl_ClearanceCompany =="+p.pusr_CompanyId
select new { cap.Capt_AR, cont.cont_Name, veh.vehl_drivername, veh.vehl_Name, veh.vehl_entrancedate, veh.vehl_customsdec, cont.cont_rampid }
var query = (from con in db.Containers
join v in db.Vehicles on con.cont_vehicleid equals v.vehl_VehicleID
join cust in db.Custom_Captions on v.vehl_state equals cust.Capt_Code
where cust.Capt_Family== "vehl_state" && v.vehl_Deleted==null && con.cont_Deleted==null && v.vehl_ClearanceCompany==p.pusr_CompanyId
select new
{
cont_name=con.cont_Name,
vehl_Name=v.vehl_Name,
VehicleState=v.vehl_state,
vehl_drivername=v.vehl_drivername,
vehl_entrancedate=v.vehl_entrancedate,
vehl_customsdec=v.vehl_customsdec,
cont_rampid=v.vehl_rampid
}
).ToList();
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