Solved

Get MAX(val) using Entities

Posted on 2013-01-13
6
348 Views
Last Modified: 2013-01-14
How do I get the MAX value from a field in table?

Something like:
Using myContext as new myEntities
    Dim x as integer = (from y in myContext.myTable Select MAX(ID)
End Using
0
Comment
Question by:lippert
6 Comments
 
LVL 8

Expert Comment

by:deepu chandran
ID: 38773374
Hi,

Try Max function like below, i dont have a system to check below statement

 Dim x as integer = myContext.myTable.Max(p => p.ID)

-- Deepu
0
 
LVL 1

Author Comment

by:lippert
ID: 38773388
'p' needs to be declared. What is it?
0
 
LVL 1

Author Comment

by:lippert
ID: 38773390
What I'm really after here is the equivalent of the SQL statements:
     DECLARE x as int
     Select x = MAX(ID) From myTable
0
DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

 
LVL 11

Expert Comment

by:Mihai Stancescu
ID: 38773423
Hi,

Try it like this:

var max = from mx in myContext.myTable
                  select mx;

int maxValue = max.Max(p=>p.ID);


Regards,
Mishu
0
 
LVL 83

Accepted Solution

by:
CodeCruiser earned 250 total points
ID: 38773971
Try following

 Dim x as integer = myContext.myTable.Max(Function(x) x.ID)
0
 
LVL 1

Author Closing Comment

by:lippert
ID: 38774333
Thanks for putting me on the right track. Your solution didn't work exactly as posted, but it was a minor change:

Dim x as integer = myContext.myTable.Max(Function(z) z.ID)

Couldn't reuse the x in the function because the compiler complained about the variable being hidden.
0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Visual Studio 2013 and Eclipse Neon 6 37
Regex validation 2 24
REXEX help Part 2 2 23
How do I bind WPF Telerik radMenuItems to commands in XAML ControlTemplate ? 1 15
This document covers how to connect to SQL Server and browse its contents.  It is meant for those new to Visual Studio and/or working with Microsoft SQL Server.  It is not a guide to building SQL Server database connections in your code.  This is mo…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

770 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