The type 'System.String' for the query operator is not Queryable!

(0) Share

Report

Posted on by vannamani77

417

Hi,

The below statement throws me below error

"The type 'System.String' for the query operator is not Queryable!" error at Microsoft.Dynamics.AX.Framework.Linq.Data.AXQueryFormatter.VisitMethodCall(..

var qryShipConfirmDate = context.UMAWHSOutboundShipmentHeaderEntity
.Where(x => x.AccountNum.StartsWith("27384"))
.OrderByDescending(o => o.ShipConfirmUTCDateTime)
.FirstOrDefault();

How to solve this?

I need Maximum date from ShipConfirmUTCDateTime column with condition AccountNum column contains 27384

Pls help.

Regards,
Manivannan

All responses (6)

Sort by

nmaenpaa 101,172 Moderator on at

Like (0)

Report
Copy link

Link copied!

Could you share any more details about your situation? What type of solution are you developing?

This statement would give you the result that you need:

select firstonly UMAWHSOutboundShipmentHeaderEntity

order by ShipConfirmUTCDateTime desc

where UMAWHSOutboundShipmentHeaderEntity.AccountNum == '27382';
vannamani77 417 on at

Like (0)

Report
Copy link

Link copied!

It is Data Integration application developed in Visual studio 2015 with C# as code behind. I make API calls of D365FO entity through OData and do my business logic. UMAWHSOutboundShipmentHeaderEntity entity is a custom entity. What I am trying to do is I need Maximum date from ShipConfirmUTCDateTime column with condition AccountNum column contains 27384
nmaenpaa 101,172 Moderator on at

Like (0)

Report
Copy link

Link copied!

Is that field a physical field in your entity data source, or some field that you calculate when the entity is read?

If it's not physical, then you can't filter or sort by it. Perhaps that would explain your problem?
vannamani77 417 on at

Like (0)

Report
Copy link

Link copied!

It is a physical field. Both "ShipConfirmUTCDateTime" and "AccountNum" are refereed from WHSShipmentTable
Martin Dráb 240,748 Most Valuable Professional on at

Like (1)

Report
Copy link

Link copied!

Which of the statements causes the problem? For instance, will it work if you remove Where(x => x.AccountNum.StartsWith("27384"))? (This one looks the most suspicious to me.)
vannamani77 417 on at

Like (1)

Report
Copy link

Link copied!

yes. you are correct. I replaced it with below statement and it worked.

Where(x => x.AccountNum.Equals("27384*"))