Error: Could not format node 'New' for execution as SQL.

lancewynn · Post by **lancewynn** » Fri 23 Jan 2009 15:20

Hello,
I am using Linq2Oracle connecting to Oracle 9i

I am receiving this error when I try to append a where clause to an IQueryable.

I Have a WorkOrder base Table, and I created an inherited OperationalWorkOrder class with discriminator of WorkOrderType=1

The following linq query works:

Code: Select all

IQueryable wo = from w in context.WorkOrder
              where WoNumber == "SAL1234"
              select w as OperationalWorkOrder;
...
foreach(...)//all ok
{
}

The following fails with the above error:

Code: Select all

IQueryable wo = from w in context.WorkOrder
              select w as OperationalWorkOrder;

IQueryable SingleWO = wo.where(w => w.WoNumber == "SAL1234");

foreach(...) //Fails here.
{
}

I have been trying numerous variations on the syntax without success. I can get this to work with the base table, but when I try to use inheritance, it falls apart.

I found a reference to this error on MS forums, but they indicate it was fixed for Linq2SQL in a previous version.

Any insight into this issue would be greatly appreciated.

AndreyR · Post by **AndreyR** » Mon 26 Jan 2009 12:58

Please post me (andreyr * devart * com) the script of your DB objects.

AndreyR · Post by **AndreyR** » Fri 30 Jan 2009 07:33

The problem is fixed, look forward to the next build.

lnu · Post by **lnu** » Tue 25 Aug 2009 15:23

Hello,

I go the same error message with the latest build. It only happens when doing something like this:

Code: Select all

var data = (from r in _context.Requests
                       where r.IdOrg == agency
                       select new Cdt.ClientPortal.Dto.RequestList()
                       {
                           CdtKey = string.Format("{0}/{1}/{2}/{3}/{4}", r.Client.NomAbr, r.Annee, string.Format("{0:0000}", r.Ref), r.Ver, r.Partie)
                       }).Skip(pageStart).Take(pageSize);

It seems that doing a string.format inside the query brakes something.

best regards,

Laurent

Shalex · Post by **Shalex** » Wed 26 Aug 2009 15:44

The bug with using the String.Format function computed at the client side is fixed. Look forward to the next build of dotConnect for Oracle. I will post here when it is available.

Shalex · Post by **Shalex** » Fri 04 Sep 2009 14:37

The new build of dotConnect for Oracle 5.25.42 is available for download now.
It can be downloaded from http://www.devart.com/dotconnect/oracle/download.html (trial version) or from Registered Users' Area (for users with valid subscription only).
For more information, please refer to http://www.devart.com/forums/viewtopic.php?t=15737 .