IDocumentQuery中documentdb linq查询中的OrderBy

Question

I try to use OrderBy in IDocumentQuery query under documentdb in c#. I try to retrieve list of courses order by distance from my place so:

var userQuery = _client
    .CreateDocumentQuery<Course>(_uriCourseCollection, options)
    .Where(x => x.CourseName.ToLower().Contains(text))
    .OrderBy(x =>x.GeoLocation.Location.Distance(myPoint))
    .AsDocumentQuery();

I received the following error message :

"Unsupported ORDER BY clause. ORDER BY item expression could not be mapped to a document path"

Someone may have solution ? , or a workaround to solved the query in efficient way ?

Answer 1

"Unsupported ORDER BY clause. ORDER BY item expression could not be mapped to a document path"

According to the Azure official document , ordering results by the ST_DISTANCE spatial function is currently not supported. I also find this feedback , you could vote it.

Order By queries by default also require maximum index precision (-1). DataType can be String or Number