Projection Class 
Namespace: SphinxConnector.FluentApi
The Projection type exposes the following members.
Name  Description  

AvgTSource 
Computes the average of a sequence of values.
 
Count 
Computes the number of occurences of a value in a sequence of values.
 
CountTResult 
Computes the number of occurences of a value in a sequence of values.
 
CountDistinctTSource 
Computes the number of distinct occurences of a value in a sequence of values.
 
MaxTResult 
Computes the maximum of a sequence of values.
 
MinTResult 
Computes the minimum of a sequence of values.
 
SumTResult 
Computes the sum of a sequence of values.

using (IFulltextSession fulltextSession = fulltextStore.StartSession()) { var results = fulltextSession.Query<Product>(). Match("a query"). GroupBy(p => p.CategoryId). Select(p => new { p.CategoryId, ProductsInCategory = Projection.Count() }). ToList(); }