All Questions
1,016
questions
1
vote
1
answer
48
views
LINQ - Left Join with multiple conditions and Is Null operators
I want to write following sql in linq.
SELECT COL1, COL2
FROM ( SELECT A.COL1, MAX (NVL (C.COL2, 0)) COL2
FROM TBL1 A
LEFT JOIN TBL2 C
ON NVL (A.COL4, '') = NVL (C.COL4, NVL (A.COL4, ''))
AND NVL (A....
- 81
0
votes
1
answer
63
views
LINQ join query to two tables with the same model
I have two tables in a database with the same structure.
The tables have many columns, the types and names are absolutely the same.
Let's say their names are OldTable and NewTable.
In my project I ...
- 11
0
votes
0
answers
61
views
Using ToList in GroupJoin cause "could not be translated" error
I'm trying to Join all the replies that fit the condition Replies.ReplyTo == Ticket.Id
in a reportInfo object. But when executing the request :
Error message:
System.InvalidOperationException: The ...
0
votes
0
answers
45
views
Group Join Vs Include Vs Projection queries, what is the difference?
To the best of my knowledges, Group Join vs. Include vs. Projection queries all bring nested entities or should I say hierarchical data - usually for one to many. Also, they all render as a join on ...
0
votes
1
answer
36
views
Linq throwing error. The cast to the value type failed
var result = from lfx in m_Context.LabFavoriteXrefs
join lfm in m_Context.LabFavoriteMasterEntries on lfx.lab_favorite_id equals lfm.lab_favorite_id into xm
from x in xm....
- 1,316
-1
votes
1
answer
119
views
Delegate func in LINQ
I have a problem with optimizing my code).
Is it possible to create a method that returns necessary outerKeySelector (i => i.ItemId1, i => i.ItemId2 etc.) as func for Join that depends from ...
- 3
0
votes
1
answer
41
views
Queryable.Join with the WHERE clause using inner table?
I'm trying to use the Queryable.Join method to join Lists of objects together, but I want to use the WHERE clause against the inner table. I cannot reverse the order of the join tables in this case. ...
- 3,117
0
votes
1
answer
62
views
How to apply joins on different context files
var InsertionId =
_DvContext.DvInsertionOrder
.Select(x => new { x.Id, x.KiteDealId, x.KiteCampaignId, x.CampaignId })
.ToList();
var camapignId = _kcdbContext.KiteLineitems
...
0
votes
0
answers
619
views
EF Core advanced linq join context with c# list
Let's say I have some table named foo and I want to filter out some rows based on a list of id's.
var idsList = new List<int> { 1, 4, ..., 9999 }
I can't use contains statement due to ...
- 174
0
votes
0
answers
49
views
How to apply sort by based on sum while join three table in Linq C#
I have one scenario, I need to implement in linq query.
Scenario:
Product table:
| Id | Name |
| --- | ---- |
| 1 | ABC |
| 2 | MNO |
| 3 | FGH |
| 4 | YUI |
| 5 | IOP |
| 6 | RTY |
...
- 13
0
votes
1
answer
61
views
Group Sum On Join Query Where One Side Is Empty
I have an order class and shipment class.
class Order
{
public long ID;
public decimal ApprovedQuantity {get; set;}
}
class Shipment
{
public long OrderID {get; set;}
public decimal ...
- 323
1
vote
1
answer
65
views
Contat 2 Lists from different tables into 1 and use AsQueryable()
Attempting to return the below 2 lists into something I can then query against.
var people = (from c in _context.FollowingPeople
select new Models.Following.FollowingModel
{
Id ...
- 457
1
vote
2
answers
415
views
C# Pivot table data into a ViewModel using Linq
I have a use case that contains data stored in a values tables as shown below, that needs to be pivot based on a JobLevel and displayed in a DataGridControl, however in order to get this working I ...
- 5,261
0
votes
3
answers
66
views
SQL join query to LINQ using groupby and order by clause
I am trying to copy this join query into linq..But I don't understand where to add group by and order by statements..
select
c.CheckID,cv.Earnings
FROM
[Customers0].[pay].[...
- 31
0
votes
2
answers
48
views
How to shorten the Join layers in Dynamic Linq
Whenever you add join a new layer is added and this is difficult to work especially in the where dynamic clause
How can I summarize each join with one word
I put a query that shows the queries I mean
...
