What are different ways to access column in select statement into select new statement?(How to remove Outer Apply Problem when we switched to MySQL from SQL Server)

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C#

var query = from Enquiry in context.tbl_Enquiry
            join Course in context.tbl_Course on Enquiry.CourseID equals Course.CourseID
            where Enquiry.SEnquiryID == SEnquiryID && Course.status.Equals("A")
            select new
            {
                
                Enquiry.EnquiryID,
                Course.CourseID,
                cname=Course.Name,
                Enquiry.EnquiryDate,
                Enquiry.Status,
                Followupdate = (from Follow in context.tbl_FollowupAdmission
                               where Follow.EnquiryID == Enquiry.EnquiryID
                               orderby Follow.Followupdate descending
                               select Follow.Followupdate).FirstOrDefault()
            };

In above query, Followupdate in select new access EnquiryID as Enquiry.EnquiryID
because we have written statement as "from Enquiry in context.tbl_Enquiry...."

What are different ways to access EnquiryID from query in "select new"?
Thanks in advance

Posted 16-Mar-15 23:14pm

m-shraddha

Updated 17-Mar-15 5:24am

v2

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Maciej Los 17-Mar-15 7:51am

?I do not understand your issue...

m-shraddha 17-Mar-15 11:16am

I was using SQL Server 2008 for my project.But now i have switched to MySQL and therefore it does not support above query due to outer apply error.Because it is accessing outer EnquiryID in select new. That is why i need different methods to access this variable.But I got the answer and I have posted the answer below.

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m-shraddha · Accepted Answer · 2015-03-17T05:21:00

C#

var query = (from Enquiry in context.tbl_Enquiry
            join Course in context.tbl_Course on Enquiry.CourseID equals    
            Course.CourseID
            where Enquiry.SEnquiryID == SEnquiryID && Course.status.Equals("A")
            select new
            {
                Enquiry,Course
            }).ToList()
.Select(x=>new{x.Enquiry.EnquiryID,x.Course.CourseID, cname=x.Course.Name,x.Enquiry.EnquiryDate,x.Enquiry.Status,
Followupdate = (from Follow in context.tbl_FollowupAdmission
              where Follow.EnquiryID == x.Enquiry.EnquiryID
              orderby Follow.Followupdate descending
              select Follow.Followupdate).FirstOrDefault()
});