I have below linq select coding. The result become empty if db.actions.ACTC_DBID values are null. How to avoid that. I need to get the query result with null values.
var apList = (from r in db.components
join o in db.cmp_actionpanel on r.CMP_DBID equals o.CMP_DBID
join u in db.cmp_button on o.BTN_DBID equals u.BTN_DBID
join a in db.actions on o.ACTC_DBID equals a.ACTC_DBID
where (r.ORG_DBID == org && r.CMP_DBID == id)
orderby o.ORDER_IDX
select new
{
AP_DBID = o.AP_DBID,
CMP_NAME = r.CMP_NAME,
CMP_DBID = r.CMP_DBID,
BTN_NAME = u.BTN_NAME,
BTN_DBID = u.BTN_DBID,
ORDER_IDX = o.ORDER_IDX,
ALWAYS_VISIBLE = o.ALWAYS_VISIBLE,
ACTC_DBID = a.ACTC_DBID,
ACTION_CODE = a.ACTION_CODE,
ACTION_CMP_DBID = o.ACTION_CMP_DBID,
STARTS_JOB_PROGRESSION = o.STARTS_JOB_PROGRESSION,
VISIBLE_ON = o.VISIBLE_ON,
CAPTURE_INFO = o.CAPTURE_INFO,
COMMAND = o.COMMAND
}).ToList();
var apList = (from r in db.components
join o in db.cmp_actionpanel on r.CMP_DBID equals o.CMP_DBID
join u in db.cmp_button on o.BTN_DBID equals u.BTN_DBID
join a in db.actions on o.ACTC_DBID equals a.ACTC_DBID into aGroup
where (r.ORG_DBID == org && r.CMP_DBID == id)
orderby o.ORDER_IDX
from ag in aGroup.DefaultIfEmpty()
select new
{
AP_DBID = o.AP_DBID,
CMP_NAME = r.CMP_NAME,
CMP_DBID = r.CMP_DBID,
BTN_NAME = u.BTN_NAME,
BTN_DBID = u.BTN_DBID,
ORDER_IDX = o.ORDER_IDX,
ALWAYS_VISIBLE = o.ALWAYS_VISIBLE,
ACTC_DBID = ag.ACTC_DBID == null ? (int?)null : ag.ACTC_DBID,
ACTION_CODE = ag.ACTION_CODE,
ACTION_CMP_DBID = o.ACTION_CMP_DBID,
STARTS_JOB_PROGRESSION = o.STARTS_JOB_PROGRESSION,
VISIBLE_ON = o.VISIBLE_ON,
CAPTURE_INFO = o.CAPTURE_INFO,
COMMAND = o.COMMAND
}).ToList();
Related
I'm trying to make a LINQ Query on Ef6 using a join on the db.ClincalAssets table where the AssetDisposalID Field is null
i.e. I don't want rows of data from that table where the AssetDisposalID is not null
The following code doesn't appear to work because it returns the same 23 results I had before I modified the code
var today = DateTime.Now.Date;
var tomorrow = today.AddDays(30);
var dateresult = db.ClinicalINSs.GroupBy(d => d.ClinicalAssetID)
.SelectMany(g => g.OrderByDescending(d => d.NextInspectionDate)
.Take(1));
var ClinicalIDVM = (from s in dateresult.Where(q => q.NextInspectionDate <= tomorrow)
join co in db.ClinicalAssets.Where (t => t.AssetDisposalID == null) on s.ClinicalAssetID equals co.ClinicalAssetID into AR
let subred = AR.OrderByDescending(subredASS => subredASS.ClinicalAssetID).FirstOrDefault()
join cp in db.ClinicalPATs on s.ClinicalAssetID equals cp.ClinicalAssetID into AP
let subpat = AP.OrderByDescending(SubPATASS => SubPATASS.ClinicalAssetID).FirstOrDefault()
orderby s.NextInspectionDate descending
select new ClinicalIDVM
{
ClinicalAssetID = s.ClinicalAssetID,
ProductName = subred.ProductName ,
SerialNo = subred.SerialNo == null ? "" : subred.SerialNo,
InspectionDate = subpat.InspectionDate,
NextInspectionDate = s.NextInspectionDate == null ? (DateTime?)null : s.NextInspectionDate,
}).ToList();
i have also tried this:
var today = DateTime.Now.Date;
var tomorrow = today.AddDays(30);
var dateresult = db.ClinicalINSs.GroupBy(d => d.ClinicalAssetID)
.SelectMany(g => g.OrderByDescending(d => d.NextInspectionDate)
.Take(1));
var ClinicalIDVM = (from s in dateresult from Disp in db.ClinicalAssets where s.NextInspectionDate <= tomorrow && Disp.AssetDisposalID == null
join co in db.ClinicalAssets on s.ClinicalAssetID equals co.ClinicalAssetID into AR
let subred = AR.OrderByDescending(subredASS => subredASS.ClinicalAssetID).FirstOrDefault()
join cp in db.ClinicalPATs on s.ClinicalAssetID equals cp.ClinicalAssetID into AP
let subpat = AP.OrderByDescending(SubPATASS => SubPATASS.ClinicalAssetID).FirstOrDefault()
orderby s.NextInspectionDate descending
select new ClinicalIDVM
{
ClinicalAssetID = s.ClinicalAssetID,
ProductName = subred.ProductName ,
SerialNo = subred.SerialNo == null ? "" : subred.SerialNo,
InspectionDate = subpat.InspectionDate,
NextInspectionDate = s.NextInspectionDate == null ? (DateTime?)null : s.NextInspectionDate,
}).ToList();
but I get al records duplicated.
I'm trying to convert the following SQL query to LINQ, but getting different result count with both,
SQL Query:
SELECT T5.CNTR, T5.BenefitCode,T5.ApprovedFlag,
T5.PaymentFrequencyCode, T5.InstalmentAmt, T5.TotalAmt,
T5.CarRego
FROM
dbo.EmployeeBenefit As T5
LEFT JOIN dbo.Payee ON T5.PayeeCntr = dbo.Payee.CNTR
LEFT JOIN dbo.BankDetails ON dbo.Payee.BankCntr = dbo.BankDetails.BankCntr
Left Join dbo.EmployeeCar As T4 on T5.EmployeeCarCntr=T4.Cntr
Inner Join dbo.EmployeeEntity As T1 On T5.EmployeeEntityCntr=T1.EmployeeEntityCntr
Inner Join dbo.EmployerEntity As T2 On T1.EmployerEntityCntr=T2.EmployerEntityCntr
where T5.EmployeeCntr = 117165
AND ((T5.EndDate is Null) OR (T5.EndDate >= GETDATE()))
LINQ:
var result = (from employeeBenefit in context.EmployeeBenefit
from payee in context.Payee.Where(x => x.Cntr == employeeBenefit.PayeeCntr).DefaultIfEmpty()
from bankDetails in context.BankDetails.Where(x => x.BankCntr == employeeBenefit.PayeeCntr).DefaultIfEmpty()
from employeeCar in context.EmployeeCar.Where(x => x.Cntr == payee.BankCntr).DefaultIfEmpty()
from employeeEntity in context.EmployeeEntity
where employeeEntity.EmployeeEntityCntr == employeeBenefit.EmployeeEntityCntr
from employeeEntity1 in context.EmployeeEntity
where employeeEntity.EmployerEntityCntr == employeeEntity1.EmployerEntityCntr
&& employeeBenefit.EmployeeCntr == iEmployeeID
&& (!employeeBenefit.EndDate.HasValue || employeeBenefit.EndDate >= DateTime.Now)
&& employeeBenefit.EmployeeCntr == 117165
&& employeeBenefit.CarRego == registration
select new
{
CNTR = employeeBenefit.Cntr,
BenefitCode = employeeBenefit.BenefitCode,
PaymentFrequencyCode = employeeBenefit.PaymentFrequencyCode,
InstalmentAmount = employeeBenefit.InstalmentAmt,
TotalAmount = employeeBenefit.TotalAmt,
CarRego = employeeBenefit.CarRego,
ApprovedFlag = employeeBenefit.ApprovedFlag
}).ToList();
Please let me know what i'm missing.
For the data in my database the SQL query is returning 10 records. But, the LINQ is returning 2700 records.
Not a full answer (I'm late for work) but:
var result = (from T5 in context.EmployeeBenefit
join PY in dbo.Payee on T5.PayeeCntr equals PY.CNTR into PY1
where T5.EmployeeCntr = 117165
select new {
CNTR = T5.Cntr,
...
}
).ToList();
It was the issue with the condition mismatch that i had done in the LINQ. The below query just worked fine. Thank you for helping me with the issue.
var result = (from employeeBenefit in context.EmployeeBenefit
from payee in context.Payee.Where(x => x.Cntr == employeeBenefit.PayeeCntr).DefaultIfEmpty()
from bankDetails in context.BankDetails.Where(x => x.BankCntr == payee.BankCntr).DefaultIfEmpty()
from employeeCar in context.EmployeeCar.Where(x => x.Cntr == employeeBenefit.EmployeeCarCntr).DefaultIfEmpty()
join employeeEntity in context.EmployeeEntity
on employeeBenefit.EmployeeEntityCntr equals employeeEntity.EmployeeEntityCntr
join employerEntity in context.EmployerEntity
on employeeEntity.EmployerEntityCntr equals employerEntity.EmployerEntityCntr
where employeeBenefit.EmployeeCntr == 117165 && (!employeeBenefit.EndDate.HasValue || employeeBenefit.EndDate >= DateTime.Now)
select new
{
CNTR = employeeBenefit.Cntr,
BenefitCode = employeeBenefit.BenefitCode,
PaymentFrequencyCode = employeeBenefit.PaymentFrequencyCode,
InstalmentAmount = employeeBenefit.InstalmentAmt,
TotalAmount = employeeBenefit.TotalAmt,
CarRego = employeeBenefit.CarRego,
ApprovedFlag = employeeBenefit.ApprovedFlag
}).ToList();
I am new to Linq joins.
i have a sql query as below. Please help me convert the same to linq.
select c.mem_id,
c.po_start,
c.po_end,
isnull(pp.new_policy_code,c.policy_no)
from claims_data c
left join tob_policy tp on (c.subgroup_id =tp.subgroup_id and c.category_id = tp.category_id
and c.service_from_date Between tp.Start_Date And isnull (tp.End_Date,
cast(GETDATE() as date)))
Left Join Tob_Policy_Period Pp On (Pp.Policy_Id = tp.Policy_Id And
c.service_from_date Between Pp.Start_Date And Pp.End_Date )
where c.cid = 13
and c.g_id = 19013
and c.mem_id = '123'
and c.code ='555'
Try with this code:
var results = (from c in yourmodelentity.claims_data
join tp in yourmodelentity.tob_policy on c.subgroup_id equals tp.subgroup_id && c.category_id equals tp.category_id && c.service_from_date Between tp.Start_Date && isnull (tp.End_Date, datetime.now)))
join Pp in yourmodelentity.Tob_Policy_Period on Pp.Policy_Id equals tp.Policy_Id && c.service_from_date Between Pp.Start_Date && Pp.End_Date
where c.cid = 13 && c.g_id = 19013 && c.mem_id = '123' && c.code ='555'
select new
{
c.mem_id,
c.po_start,
c.po_end
}).ToList();
Try with below code:
var results = (from c in modelentity.claims_data
join tp in modelentity.tob_policy on new { first = c.subgroup_id, second= c.category_id } equals new { first = tp.subgroup_id, second = tp.category_id } into tpjoin
from tplj in tpjoin.DefaultIfEmpty()
join pp in modelentity.Tob_Policy_Period on new { first = tplj.Policy_Id ?? 0 } equals new { first = Pp.Policy_Id } into ppjoin
from pplj in tpjoin.DefaultIfEmpty()
where ((c.service_from_date) >= tplj.Start_Date && (c.service_from_date) <= (tplj.End_Date ?? DateTime.Now)) &&
((c.service_from_date) >= pplj.Start_Date && (c.service_from_date) <= pplj.End_Date) &&
(c.cid = 13 && c.g_id = 19013 && c.mem_id = "123" && c.code = "555")
select new
{
c.mem_id,
c.po_start,
c.po_end,
policy_no = (pplj != null ? (pplj.new_policy_code ?? c.policy_no) : c.policy_no)
}).ToList();
I have this LINQ query and am getting results I need. However it takes 5-6 seconds to show results on localhost, and I can't even run this on Azure.
I'm new to LINQ, and I'm sure that I'm doing something inefficient.
Could someone direct me to optimize?
var joblist = (from t in db.Tracking
group t by t.JobNumber into j
let id = j.Max(x => x.ScanDate)
select new
{
jn = j.Key,
ti = j.FirstOrDefault(y => y.ScanDate == id).TrackingId,
sd = j.FirstOrDefault(y => y.ScanDate == id).ScanDate,
lc = j.FirstOrDefault(y => y.ScanDate == id).LocationId
}).Where(z => z.lc == lid).Where(z => z.jn != null);
jfilter = (from tr in joblist
join lc in db.Location on tr.lc equals lc.LocationId
join lt in db.LocType on lc.LocationType equals lt.LocationType
select new ScanMod
{
TrackingId = tr.ti,
LocationName = lc.LocationName,
JobNumber = tr.jn,
LocationTypeName = lt.LocationTypeName,
ScanDate = tr.sd,
StoneId = ""
}).OrderByDescending(z => z.ScanDate);
UPDATE:
This query runs on Azure(s1) but it takes 30 seconds. This table has 500,000 rows and I assume that OrderByDescending or FirstOrDefault is killing it...
var joblist = db.Tracking
.GroupBy(j => j.JobNumber)
.Select(g => g.OrderByDescending(j => j.ScanDate).FirstOrDefault());
jfilter = (from tr in joblist
join lc in db.Location on tr.LocationId equals lc.LocationId
join lt in db.LocType on lc.LocationType equals lt.LocationType
where tr.LocationId == lid
select new ScanMod
{
TrackingId = tr.TrackingId,
LocationName = lc.LocationName,
JobNumber = tr.JobNumber,
LocationTypeName = lt.LocationTypeName,
ScanDate = tr.ScanDate,
StoneId = ""
}).OrderByDescending(z => z.ScanDate);
This linq to ef syntax produces the sql syntax shown below. How can I get it to produce without the CROSS JOIN? The cross join is giving me a ton of extra records.
vehicleList = (from _vehicle in shireyContext.Vehicles
join _statusDescription in shireyContext.StatusDescriptions
on _vehicle.Status equals _statusDescription.StatusId
join _newOptions2 in shireyContext.VehicleOption_New
on _vehicle.StockNo equals _newOptions2.StockNo
where _vehicle.NewOrUsed == NewOrUsed && _vehicle.Model == Model && _newOptions2.Color != null
from _newOptions in shireyContext.VehicleOption_New
select new VehicleDomainEntity
{
StockNo = _vehicle.StockNo,
Year = _vehicle.VehicleYear,
Make = _vehicle.Make,
Model = _vehicle.Model,
Description = _newOptions2.Description,
ExteriorColor = _vehicle.ExteriorColor,
InteriorColor = _vehicle.InteriorColor,
InternetPrice = _vehicle.CodedCost,
ListPrice = _vehicle.ListPrice,
Status = _statusDescription.StatusDescriptionText,
NewOrUsed = _vehicle.NewOrUsed,
Mileage = _vehicle.Mileage,
VIN = _vehicle.VIN
}).ToList();
produces this sql:
SELECT
Extent2.StatusId AS StatusId,
Extent1.StockNo AS StockNo,
Extent1.VehicleYear AS VehicleYear,
Extent1.Make AS Make,
Extent1.Model AS Model,
Extent3.Description AS Description,
Extent1.ExteriorColor AS ExteriorColor,
Extent1.InteriorColor AS InteriorColor,
Extent1.CodedCost AS CodedCost,
Extent1.ListPrice AS ListPrice,
Extent2.StatusDescriptionText AS StatusDescriptionText,
Extent1.NewOrUsed AS NewOrUsed,
Extent1.Mileage AS Mileage,
Extent1.VIN AS VIN
FROM dbo.Vehicles AS Extent1
INNER JOIN dbo.StatusDescription AS Extent2 ON Extent1.Status = Extent2.StatusId
INNER JOIN dbo.VehicleOption_New AS Extent3 ON Extent1.StockNo = Extent3.StockNo
CROSS JOIN dbo.VehicleOption_New AS Extent4
WHERE (Extent1.NewOrUsed = 'N') AND (Extent1.Model = 'cts' AND (Extent3.Color IS NOT NULL))
I think you want this
from _vehicle in shireyContext.Vehicles
join _statusDescription in shireyContext.StatusDescriptions
on _vehicle.Status equals _statusDescription.StatusId
join _newOptions2 in shireyContext.VehicleOption_New into VehicleNew
on _vehicle.StockNo equals _newOptions2.StockNo
where _vehicle.NewOrUsed == NewOrUsed && _vehicle.Model == Model && _newOptions2.Color != null
from _newOptions in VehicleNew
The two lines that are changed are:
join _newOptions2 in shireyContext.VehicleOption_New into VehicleNew
and
from _newOptions in VehicleNew