ACMContext.cs

public class ACMContext: DbContext
{
        public ACMContext(DbContextOptions<ACMContext> options)
            :base(options)
        {

        }

        public virtual DbSet<ACMPreauthList> PreauthLists { get; set; }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            modelBuilder.Entity<ACMPreauthList>().HasNoKey().ToView("case_management_preauth_list")
                                .Property(x => x.InvoiceAmount)
                                .HasColumnType("decimal(18,2)");

            base.OnModelCreating(modelBuilder); 
        }
    }
}

ACMPreauthList.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.Json.Serialization;

namespace BenchmarkSQL.Models
{
    public class ACMPreauthList
    {
        public Int32 InvoiceId { get; set; }
        public Int32 TreatmentId { get; set; }
        public string InvoiceReference { get; set; }
        public Decimal InvoiceAmount { get; set; }
        public DateTime TreatmentDate { get; set; }
        public string InvoiceStatus { get; set; }
        public Int32 BeneficiaryId { get; set; }
        public string FirstName { get; set; }
        public string Surname { get; set; }
        public string CompanyName { get; set; }
        public string LengthOfStay { get; set; }
        public DateTime DischargeDate { get; set; }
        public DateTime AdmissionDate { get; set; }
        public string CapturedBy { get; set; }
        public string ConditionDescription { get; set; }
        public Int32 AffectedSystem { get; set; }
        public string AdmissionStatus { get; set; }
        public string PolicyHolderName { get; set; }
        public string ClientType { get; set; }
        public string DOB { get; set; }
        public Int32 Age { get; set; }
        public string Gender { get; set; }
        public string AffectedSystemName { get; set; }
        public DateTime EffectiveDate { get; set; }
        public Int32 PolicyHolderId { get; set; }
        public string BrokerName { get; set; }
        public string InvoiceBenefit { get; set; }
    }
}

Program.cs

using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Configs;
using BenchmarkDotNet.Engines;
using BenchmarkDotNet.Running;
using BenchmarkSQL.DAL;
using BenchmarkSQL.Models;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

namespace BenchmarkSQL
{
    public class ACMTester
    {

        private DAL.ACMContext con;


        public IEnumerable<ACMPreauthList> GetACMPreauthFromSQLToEnum(long beneficiaryId)
        {
            return this.con.PreauthLists.FromSqlRaw<ACMPreauthList>("SELECT * FROM case_management_preauth_list WHERE BeneficiaryId={0}", beneficiaryId).ToList();
        }
        public IEnumerable<ACMPreauthList> GetACMPreauthFromSetToEnum(long beneficiaryId)
        {
            return this.con.Set<ACMPreauthList>().Where(x => x.BeneficiaryId == beneficiaryId).ToList();
        }


        [GlobalSetup]
        public void GlobalSetup()
        {
            var services = Program.ConfigureServices();

            var serviceProvider = services.BuildServiceProvider();
            this.con = serviceProvider.GetService<ACMContext>();
        }

        [Benchmark]
        public void FromSQLToEnum()
        {
            GetACMPreauthFromSQLToEnum(1192843);
        }

        [Benchmark]
        public void FromSetToEnum()
        {
            GetACMPreauthFromSetToEnum(1192843);
        }
    }
    public class Program
    {
        static void Main(string[] args)
        {
            
            BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
        }

        public static IServiceCollection ConfigureServices()
        {
            IServiceCollection services = new ServiceCollection();

            services.AddDbContext<DAL.ACMContext>(db =>
            {
                db.UseSqlServer("SQLconn",
                            opt => opt.CommandTimeout((int)TimeSpan.FromMinutes(20).TotalSeconds));
            });

            return services;
        }

    }
}