Solved

Linq syntex help

Posted on 2010-08-15
3
349 Views
Last Modified: 2013-11-11
       Dim Query = From Supp In db.Suppliers _
                           Group Join RO In db.ReceiveOrders _
                On RO.SupplierNo Equals Supp.SupplierID _
                Into RightTableResults = Group _
        From Contact In RightTableResults.DefaultIfEmpty _
             Select ContactName = If(Supp Is Nothing, Nothing, _
        If(Supp Is Nothing, New Supplier, Supp).ContactName), Supp.Name

This query works great, now I need to add this line to join in one more table:

 Join ROE In db.ReceiveEntries On RO.ReceiveID Equals ROE.ReceiveNo

I can't figure out how to do it, can some one help me with that?

(the SQL syntax is very simple:
SELECT     Supplier.Name, ReceiveEntry.Cost, ReceiveEntry.Qty, ReceiveOrder.ReceiveOrderDate
FROM         ReceiveEntry INNER JOIN
                      ReceiveOrder ON ReceiveEntry.ReceiveNo = ReceiveOrder.ReceiveID RIGHT OUTER JOIN
                      Supplier ON ReceiveOrder.SupplierNo = Supplier.SupplierID)
 
0
Comment
Question by:Mr_Ezi
3 Comments
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33441655
try this link there is an sql to linq Converter...
http://www.sqltolinq.com/
0
 
LVL 14

Expert Comment

by:PockyMaster
ID: 33443981
If there's a relationship in your database between ReceiveEntry and ReceiveOrder you should be able to simply add the receive entries to your select.

e.g. (don't know the VB syntax... but in C# it would be something like)
select new
{
    Supp.ContactName,  // replace this with the if statements you had
    Supp.Name,
    Entries = RO.ReceiveEntries
}
0
 
LVL 12

Accepted Solution

by:
kumar754 earned 500 total points
ID: 33534615
based on your code, try the attached linq query,
I guess you can easily convert it into VB.NET


 var query = from supp in db.Suppliers
	     join recOrder in db.ReceiveOrder
		on supp.SupplierID equals ReceiveOrder.SupplierNo into recOrderGroup
	     join recEntry in db.ReceiveEntry
		on recOrder.ReceiveID equals recEntry.ReceiveNo into recEntryGroup
	     from recOrder in recOrderGroup.DefaultIfEmpty()
	     from recEntry in recEntryGroup.DefaultIfEmpty()
	     select new {
		supp.Name, 
		recEntry.Cost, 
		recEntry.Qty, 
		recOrder.ReceiveOrderDate
	     };

Open in new window

0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
How to join on ID, with prefix? 15 58
VB.NET 1 21
Batch file or script with password 22 38
Sending receiving text messages in vb.net 15 32
Wouldn’t it be nice if you could test whether an element is contained in an array by using a Contains method just like the one available on List objects? Wouldn’t it be good if you could write code like this? (CODE) In .NET 3.5, this is possible…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

808 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question