Entity Framework forcing Inner Join when Left Join DefaultIfEmpty() Syntax used

Entityframework Join using lambdas and the join method

It seems that there are several methods to do joins using linq. One is simpler and just requires connecting tables, like in this example:...var found = from c in s.categories join cm in s.categorymaps on c.CategoryId equals cm.ChildCategoryId select c; ...I'm having a terrible time trying to figure out how to join using this...

Outer left Entity Framework through Linq To Entities using Where Clause

I have studied every topic on how to use the Entity Framework with Linq to Entities (.NET 3.5) to create the LEFT OUTER JOIN equivalent, but I haven't been able to find a solution to the following issue....Considering the two tables shown below as objects:... public class Foo { public int FooId; // primary key public string ...

LEFT JOIN or RIGHT JOIN using LINQ Entity-Framework

Try using Linq for joining. What ought I to use? Right or left joining?... APPLICANT TABLE PROFILE TABLE APPLICANT_ID|profile_id|Applicant_Name| |profile_id|Applicant_Name 1 | NULL | RAY HEAVENS | | 1 | MARK LAPID 2 | NULL | BEN TULFO | | 2 | SUPER MAN 3 | 1 ...

Left Outer Join using Entity Framework and Lambda Expressions

Employee id, name, datejoin, deptID ...another table, which is...Marketing id, name, deptID ...I want to add the name and deptID from the Employee table into the Marketing table if it doesn't already exist by searching for the deptID from the Employee table in Marketing. In essence, I think it is the left outside connect....Using EF and lambda exp...

Entity framework Include command - Left or inner join?

As I was examining the distinction between...Include... and ...Join... I discovered that...It is preferable to utilize a Foreign Keys if the DB ...has not... includes one because it lacks navigational aids....Join...If it has navigational aids, then use them....Include... . ( it also save a db hit.)...But one ...reply here... in particular struck ...

Entity Framework + Linq LEFT JOIN using a where clause?

I'm using query syntax and Entity Framework 5 with Linq (I think, please correct my terminology). I have a table of research participants, and I want to link each one of them to a logged SMS message whose "to" or "from" number corresponds to their phone number. I also want communications that were sent by or to an unknown number to be included in t...

Entity Framework left join on multiple tables creates inner join instead

Only one of the four tables in the query I'm trying to build will be guaranteed to exist. Creating left joins in EF has always worked for me, but never with more than one join. This is the problem:... var details = (from planInfo in context.PlanInfo join templateRec in context.ProductTemplates on planInfo.Temp...

How to do a left outer join in Entity Framework without using the query syntax?

I'm attempting to translate this query from the query syntax of Linq to a method-based syntax....This is the problem:... var products = from p in context.Products join t in context.TopSellings on p.Id equals t.Id into g from tps in g.DefaultIfEmpty() orderby tps.Rating descending ...

linq left join with filtering in joined

Here, I'm receiving double meals....IEnumerable<DTOHotMealsPrice> lst = (from m in this.dbEntity.HOT_MEALS join ml in this.dbEntity.HOT_MEALS_PRICE on m.MEALSID equals ml.MEALSID into mls from mls1 in mls.DefaultIfEmpty() where mls1.HOTID==hotelId select new DTOHotMealsPrice { MEALSID = m.MEALSID, MEALSNAME = m...

EF Core 2.1, force SelectMany to produce LEFT JOIN

Assume we have a straightforward ...one->one->many... connection with the tables structured as follows:...public class City { public string Name { get; set; } [Column("DtaCentralSchoolId")] [ForeignKey("MyCentralSchool")] public int? CentralSchoolId { get; set; } public CentralSchool MyCentralSchool { get; set; } } public class Centra...