Left Join in Subsonic 3

Posted by user303187 on Stack Overflow See other posts from Stack Overflow or by user303187
Published on 2010-03-27T13:42:46Z Indexed on 2010/03/27 13:43 UTC
Read the original article Hit count: 380

Filed under:

subsonic3

|

LINQ

|

left-join

|

error

I'm trying to do a left join in subsonic 3 using linq but it doesn't seem to work, I get a big error.

        var post = from p in Post.All()
                    join q in Quote.All() on p.ID equals q.PostID into pq
                    where p.ID == id.Value
                    from qt in pq.DefaultIfEmpty()
                    select new {p, qt};

I'm using subsonic 3, latest GIT version from Rob, but I'm getting an error, see below, when I try a left join. I have searched but I didn't found any solution.

Can anyone explain to me why the error and how to fix it? Thanks

Expression of type 'System.Collections.Generic.IEnumerable1[GetAQuote.Post]' cannot be used for parameter of type 'System.Linq.IQueryable1[GetAQuote.Post]' of method 'System.Linq.IQueryable1[<>f__AnonymousType221[GetAQuote.Post], System.Collections.Generic.IEnumerable1%5BGetAQuote.Quote%5D, System.Linq.Expressions.Expression1[System.Func2%5BGetAQuote.Post,System.Int32%5D%5D, System.Linq.Expressions.Expression1[System.Func2%5BGetAQuote.Quote,System.Int32%5D%5D, System.Linq.Expressions.Expression1[System.Func3%5BGetAQuote.Post,System.Collections.Generic.IEnumerable1[GetAQuote.Quote],<>f__AnonymousType22%5BGetAQuote.Post,System.Collections.Generic.IEnumerable1%5BGetAQuote.Quote%5D%5D%5D%5D">GetAQuote.Post,System.Collections.Generic.IEnumerable1[GetAQuote.Quote]]] GroupJoin[Post,Quote,Int32,<>f__AnonymousType22'`

© Stack Overflow or respective owner

Related posts about subsonic3

How to log subsonic3 sql

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm starting to develop a new asp.net application based on subsonic3 (for queries) and log4net (for logs) and would like to know how to interface subsonic3 with log4net so that log4net logs the underlying sql used by subsonic. This is what I have so far: public static IEnumerable<arma_ocorrencium>… >>> More
Left Join in Subsonic3

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there, I'm new in subsonic3, and I'm getting some errors when I try to use LeftJoin var q = from c in categories join p in products on c equals p.Category into ps from p in ps.DefaultIfEmpty() select new { Category = c, ProductName = p == null ? "(No products)" : p.ProductName… >>> More
Help with Subsonic3 ActiveRecord LINQ query

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following subsonic entities TInvoiceHeader TAccountAssociation How can I achieve the following in LINQ (subsonic) SELECT * from TInvoiceHeader WHERE custid IN (SELECT custid FROM TAccountAssociation WHERE username = 'a') I need to bind the results to a GridView. >>> More
Help with Subsonic3 LINQ query

as seen on Stack Overflow - Search for 'Stack Overflow'
I have the following subsonic entities TInvoiceHeader TAccountAssociation How can I achieve the following in LINQ SELECT * from TInvoiceHeader WHERE custid IN (SELECT custid FROM TAccountAssociation WHERE username = 'a') I need to bind the results to a GridView. >>> More
Using constructor to load data in subsonic3?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm getting an error while trying to load an record through the constructor. The constructor is: public Document(Expression<Func<Document,bool>> expression); and i try to load a single item in like this var x = new Document(f=>f.publicationnumber=="xxx"); publicationnumber isn't… >>> More

Related posts about LINQ

LINQ to SQL, LINQ to XML and Accessing DataTable using LINQ

as seen on C# Corner - Search for 'C# Corner'
This article demonstrates how to use LINQ on DataTable, XML Data using LINQ to XML and SQL server data base using LINQ to SQL Classes. >>> More
Exception with Linq2SQL Query

as seen on Stack Overflow - Search for 'Stack Overflow'
I am running a query using Linq2SQL that comes down to following query: DateTime? expiration = GetExpirationDate(); IQueryable<Persons> persons = GetPersons(); IQueryable<Items> subquery = from i in db.Items where i.ExpirationDate >= expiration … >>> More
What is Linq?

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
The way data can be retrieved in .NET. LINQ provides a uniform way to retrieve data from any object that implements the IEnumerable<T> interface. With LINQ, arrays, collections, relational data, and XML are all potential data sources. Why LINQ?With LINQ, you can use the same syntax to retrieve… >>> More
Mixing Silverlight-Specific System.Xml.Linq dll with Non-Silverlight System.Xml.Linq dll

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a Logic layer that references Silverlight's System.Xml.Linq dll and a GUI that is in WPF (hence using the non-Silverlight System.Xml.Linq dll). When I attempt to pass an XElement from GUI project to a method in the Logic project, I am getting (basically) "XElement is not of type XElement" errors… >>> More
Subsonic 3 LINQ vs LINQ to SQL

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am using SQL Server 2005 in a project. I have to decide about datalayer. I would like to use LINQ in my project. I saw SubSonic 3 supporting LINQ and I also have option for LINQ to SQL, because i can have typed lists from LINQ to SQL. I am wondering what is different between LINQ to SQL and… >>> More