SolvedPrivate

Rewrite this SQL in LINQ - is this correct?

Posted on 2014-12-01
2
161 Views
Last Modified: 2016-02-15
This works in SQL but I want  to write it in LINQ. Is this correct in LINQ?

LINQ
   //1. check if productId, PromotionId and Serial number exist 
            var p = (from s in _dataContext.Consumers
                where s.ProductId == model.ProductId &&
                      s.PromotionId == model.PromotionsId &&
                      s.ProductSerialNumber == model.SerialNumber
                select s);

            if (p != null) //row exists
                return false;

Open in new window


In SQL
if exists (select * from consumer where [ProductId] = @productId
                                         And [ProductSerialNumber] = @SerialNumber
										 and [PromotionId] = @PromotionId)
   return false

Open in new window

0
Comment
Question by:Camillia
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 500 total points
ID: 40473905
I believe your LINQ is correct, however, I don't think your if will work. You need to actually execute the query. Try:

if (p.Any())

Open in new window

0
 
LVL 7

Author Comment

by:Camillia
ID: 40473915
oh, let me see
0

Featured Post

SharePoint Admin?

Enable Your Employees To Focus On The Core With Intuitive Onscreen Guidance That is With You At The Moment of Need.

Question has a verified solution.

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

Entity Framework is a powerful tool to help you interact with the DataBase but still doesn't help much when we have a Stored Procedure that returns more than one resultset. The solution takes some of out-of-the-box thinking; read on!
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

752 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