CREATE TABLE #Transactions
(
AccountId INTEGER,
TranDate DATE,
TranAmt NUMERIC(8, 2)
);
INSERT INTO #Transactions
SELECT *
FROM ( VALUES ( 1, '2011-01-15', 50),( 1, '2011-01-17', 500),( 1, '2011-01-17', 500),
  ( 1, '2011-01-16', 500),( 1, '2011-01-24', 75),( 1, '2011-01-26', 125),
  ( 1, '2011-02-28', 500),( 2, '2011-01-01', 500),( 2, '2011-01-15', 50),
              ( 2, '2011-01-22', 25),( 2, '2011-01-23', 125),( 2, '2011-01-26', 200),
              ( 2, '2011-01-29', 250),( 3, '2011-01-01', 500),( 3, '2011-01-15', 50 ),
              ( 3, '2011-01-22', 5000),( 3, '2011-01-25', 550),( 3, '2011-01-27', 95 ),
              ( 3, '2011-01-30', 2500)
) dt (AccountId, TranDate, TranAmt);

SELECT  
    AccountId,   
    TranDate,
  TranAmt, 
    Sum(TranAmt) OVER(partition by Accountid ORDER BY TranDate RANGE UNBOUNDED PRECEDING) AS SumAmt  
FROM  #Transactions 
GO

SELECT  
    AccountId,   
    TranDate,
  TranAmt, 
    Sum(TranAmt) OVER(partition by Accountid ORDER BY TranAmt RANGE UNBOUNDED PRECEDING) AS SumAmt  
FROM  #Transactions 
GO

HibernatingRhinos.Profiler.Appender.EntityFramework.EntityFrameworkProfiler.Initialize();

using System.Collections.Generic;

namespace EF_Sample06.Models
{
    public class Department
    {
        public int DepartmentId { get; set; }
        public string Name { get; set; }

        //Creates Employee navigation property for Lazy Loading (1:many)
        public virtual ICollection<Employee> Employees { get; set; }
    }
}

namespace EF_Sample06.Models
{
    public class Employee
    {
        public int EmployeeId { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }        

        //Creates Department navigation property for Lazy Loading
        public virtual Department Department { get; set; }
    }
}

using System.Data.Entity;
using EF_Sample06.Models;

namespace EF_Sample06.DataLayer
{
    public class Sample06Context : DbContext
    {
        public DbSet<Department> Departments { set; get; }
        public DbSet<Employee> Employees { set; get; }
    }
}

using System.Collections.Generic;
using System.Data.Entity.Migrations;
using EF_Sample06.Models;

namespace EF_Sample06.DataLayer
{
    public class Configuration : DbMigrationsConfiguration<Sample06Context>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
            AutomaticMigrationDataLossAllowed = true;
        }

        protected override void Seed(Sample06Context context)
        {
            var employee1 = new Employee { FirstName = "f name1", LastName = "l name1" };
            var employee2 = new Employee { FirstName = "f name2", LastName = "l name2" };
            var employee3 = new Employee { FirstName = "f name3", LastName = "l name3" };
            var employee4 = new Employee { FirstName = "f name4", LastName = "l name4" };

            var dept1 = new Department { Name = "dept 1", Employees = new List<Employee> { employee1, employee2 } };
            var dept2 = new Department { Name = "dept 2", Employees = new List<Employee> { employee3 } };
            var dept3 = new Department { Name = "dept 3", Employees = new List<Employee> { employee4 } };

            context.Departments.Add(dept1);
            context.Departments.Add(dept2);
            context.Departments.Add(dept3);
            base.Seed(context);
        }
    }
}

void ExportMappings(DbContext context, string edmxFile)
{
     var settings = new XmlWriterSettings { Indent = true };
     using (XmlWriter writer = XmlWriter.Create(edmxFile, settings))
     {
         System.Data.Entity.Infrastructure.EdmxWriter.WriteEdmx(context, writer);
     }
}

using (var db = new Sample06Context())
{
     ExportMappings(db, "mappings.edmx");
}

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using EF_Sample06.DataLayer;
using EF_Sample06.Models;

namespace EF_Sample06
{
    class Program
    {
        static IList<Employee> FindEmployees(string fName, string lName, bool byName, bool byLName)
        { 
            using (var db = new Sample06Context())
            {
                IQueryable<Employee> query = db.Employees.AsQueryable();

                if (byLName)
                {
                    query = query.Where(x => x.LastName == lName);
                }

                if (byName)
                {
                    query = query.Where(x => x.FirstName == fName);
                }

                return query.ToList();
            }
        }

        static void Main(string[] args)
        {
            // note: remove this line if you received : create database is not supported by this provider.
            HibernatingRhinos.Profiler.Appender.EntityFramework.EntityFrameworkProfiler.Initialize();

            Database.SetInitializer(new MigrateDatabaseToLatestVersion<Sample06Context, Configuration>());

            var list = FindEmployees("f name1", "l name1", true, true);
            foreach (var item in list)
            {
                Console.WriteLine(item.FirstName);
            }
        }
    }
}

var list = FindEmployees("f name1", "l name1", true, true);

SELECT [Extent1].[EmployeeId]              AS [EmployeeId],
       [Extent1].[FirstName]               AS [FirstName],
       [Extent1].[LastName]                AS [LastName],
       [Extent1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   [dbo].[Employees] AS [Extent1]
WHERE  ([Extent1].[LastName] = 'l name1' /* @p__linq__0 */)
       AND ([Extent1].[FirstName] = 'f name1' /* @p__linq__1 */)

using (var db = new Sample06Context())
{
    var dept1 = db.Departments.Find(1);
    if (dept1 != null)
    {
        Console.WriteLine(dept1.Name);
        foreach (var item in dept1.Employees)
        {
             Console.WriteLine(item.FirstName);
        }
    }
}

SELECT [Limit1].[DepartmentId] AS [DepartmentId],
       [Limit1].[Name]         AS [Name]
FROM   (SELECT TOP (2) [Extent1].[DepartmentId] AS [DepartmentId],
                       [Extent1].[Name]         AS [Name]
        FROM   [dbo].[Departments] AS [Extent1]
        WHERE  [Extent1].[DepartmentId] = 1 /* @p0 */) AS [Limit1]


SELECT [Extent1].[EmployeeId]              AS [EmployeeId],
       [Extent1].[FirstName]               AS [FirstName],
       [Extent1].[LastName]                AS [LastName],
       [Extent1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   [dbo].[Employees] AS [Extent1]
WHERE  ([Extent1].[Department_DepartmentId] IS NOT NULL)
       AND ([Extent1].[Department_DepartmentId] = 1 /* @EntityKeyValue1 */)

using (var db = new Sample06Context())
{
      foreach (var dept in db.Departments)
      {
           Console.WriteLine(dept.Name);
           foreach (var item in dept.Employees)
           {
                Console.WriteLine(item.FirstName);
            }
        }
}

There is already an open DataReader associated with this Command which must be closed first

<connectionStrings>
    <clear/>
    <add
       name="Sample06Context"
       connectionString="Data Source=(local);Initial Catalog=testdb2012;Integrated Security = true;MultipleActiveResultSets=True;"
       providerName="System.Data.SqlClient"
      />
</connectionStrings>

using (var db = new Sample06Context())
{
      foreach (var dept in db.Departments.Include(x => x.Employees))
      {
           Console.WriteLine(dept.Name);
           foreach (var item in dept.Employees)
           {
              Console.WriteLine(item.FirstName);
           }
       }
}

SELECT [Project1].[DepartmentId]            AS [DepartmentId],
       [Project1].[Name]                    AS [Name],
       [Project1].[C1]                      AS [C1],
       [Project1].[EmployeeId]              AS [EmployeeId],
       [Project1].[FirstName]               AS [FirstName],
       [Project1].[LastName]                AS [LastName],
       [Project1].[Department_DepartmentId] AS [Department_DepartmentId]
FROM   (SELECT [Extent1].[DepartmentId]            AS [DepartmentId],
               [Extent1].[Name]                    AS [Name],
               [Extent2].[EmployeeId]              AS [EmployeeId],
               [Extent2].[FirstName]               AS [FirstName],
               [Extent2].[LastName]                AS [LastName],
               [Extent2].[Department_DepartmentId] AS [Department_DepartmentId],
               CASE
                 WHEN ([Extent2].[EmployeeId] IS NULL) THEN CAST(NULL AS int)
                 ELSE 1
               END                                 AS [C1]
        FROM   [dbo].[Departments] AS [Extent1]
               LEFT OUTER JOIN [dbo].[Employees] AS [Extent2]
                 ON [Extent1].[DepartmentId] = [Extent2].[Department_DepartmentId]) AS [Project1]
ORDER  BY [Project1].[DepartmentId] ASC,
          [Project1].[C1] ASC

public class Sample06Context : DbContext
{
        public Sample06Context()
        {
            this.Configuration.LazyLoadingEnabled = false;
        }

public class Department
{
     public int DepartmentId { get; set; }
     public string Name { get; set; }

     public  ICollection<Employee> Employees { get; set; }
     public Department()
     {
         Employees = new HashSet<Employee>();
     }
}

public class MyMemoryCache 
{
    public MemoryCache Cache { get; set; }
    public MyMemoryCache()
    {
        Cache = new MemoryCache(new MemoryCacheOptions
        {
            SizeLimit = 1024
        });
    }
}

Exception: Cache entry must specify a value for Size when SizeLimit is set.
at Microsoft.Extensions.Caching.Memory.MemoryCache.SetEntry(CacheEntry entry)

 var cacheEntryOptions = new MemoryCacheEntryOptions()
                .SetSize(1)
                .SetSlidingExpiration(TimeSpan.FromSeconds(3));

namespace NHSample2.Domain
{
  public class User
  {
      public virtual int Id { get; set; }
      public virtual string UserName { get; set; }
      public virtual string Password { get; set; }
  }
}

namespace NHSample2.Domain
{
  public class Category
  {
      public virtual int Id { get; set; }
      public virtual string CategoryName { get; set; }
  }
}

using System;

namespace NHSample2.Domain
{
  public class News
  {
      public virtual Guid Id { get; set; }
      public virtual string Subject { get; set; }
      public virtual string NewsText { get; set; }
      public virtual DateTime DateEntered { get; set; }
      public virtual Category Category { get; set; }
      public virtual User User { get; set; }
  }
}

using FluentNHibernate.Automapping;
using FluentNHibernate.Cfg;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;

namespace NHSample2
{
  class Config
  {
      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
              .Where(x => x.Namespace.EndsWith("Domain"))
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly).Configure(cfg);

          return cfg;
      }

      public static void GenerateDbScript(Configuration config, string filePath)
      {
          bool script = true;//فقط اسکریپت دیتابیس تولید گردد
          bool export = false;//نیازی نیست بر روی دیتابیس هم اجرا شود
          new SchemaExport(config).SetOutputFile(filePath).Create(script, export);
      }

      public static void BuildDbSchema(Configuration config)
      {
          bool script = false;//آیا خروجی در کنسول هم نمایش داده شود
          bool export = true;//آیا بر روی دیتابیس هم اجرا شود
          bool drop = false;//آیا اطلاعات موجود دراپ شوند
          new SchemaExport(config).Execute(script, export, drop);
      }

      public static void CreateSQL2008DbPlusScript(string connectionString, string filePath)
      {
          Configuration cfg =
              GenerateMapping(
              MsSqlConfiguration
              .MsSql2008
              .ConnectionString(connectionString)
              .ShowSql()
              );
          GenerateDbScript(cfg, filePath);
          BuildDbSchema(cfg);
      }

      public static ISessionFactory CreateSessionFactory(IPersistenceConfigurer dbType)
      {
          return
             Fluently.Configure().Database(dbType)
              .Mappings(m => m.AutoMappings
                         .Add(
                             new AutoPersistenceModel()
                                 .Where(x => x.Namespace.EndsWith("Domain"))
                                 .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly))
                                 )
               .BuildSessionFactory();
      }
  }
}

using System;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
         Config.CreateSQL2008DbPlusScript(
              "Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true",
              "db.sql");

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

  create table [Category] (
      Id INT IDENTITY NOT NULL,
     CategoryName NVARCHAR(255) null,
     primary key (Id)
  )

  create table [User] (
      Id INT IDENTITY NOT NULL,
     UserName NVARCHAR(255) null,
     Password NVARCHAR(255) null,
     primary key (Id)
  )

  create table [News] (
      Id UNIQUEIDENTIFIER not null,
     Subject NVARCHAR(255) null,
     NewsText NVARCHAR(255) null,
     DateEntered DATETIME null,
     Category_id INT null,
     User_id INT null,
     primary key (Id)
  )

  alter table [News]
      add constraint FKE660F9E1C9CF79
      foreign key (Category_id)
      references [Category]

  alter table [News]
      add constraint FKE660F95C1A3C92
      foreign key (User_id)

      references [User]

using System;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using NHSample2.Domain;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
          using (ISessionFactory sessionFactory = Config.CreateSessionFactory(
                  MsSqlConfiguration
                      .MsSql2008
                      .ConnectionString("Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true")
                      .ShowSql()
                  ))
          {
              using (ISession session = sessionFactory.OpenSession())
              {
                  using (ITransaction transaction = session.BeginTransaction())
                  {
                      //با توجه به کلیدهای خارجی تعریف شده ابتدا باید گروه‌ها را اضافه کرد
                      Category ca = new Category() {  CategoryName = "Sport" };
                      session.Save(ca);
                      Category ca2 = new Category() { CategoryName = "IT" };
                      session.Save(ca2);
                      Category ca3 = new Category() { CategoryName = "Business" };
                      session.Save(ca3);

                      //سپس یک کاربر را به دیتابیس اضافه می‌کنیم
                      User u = new User() {  Password = "123$5@1", UserName = "VahidNasiri" };
                      session.Save(u);

                      //اکنون می‌توان یک خبر جدید را ثبت کرد

                      News news = new News()
                      {
                          Category = ca,
                          User = u,
                          DateEntered = DateTime.Now,
                          Id = Guid.NewGuid(),
                          NewsText = "متن خبر جدید",
                          Subject = "عنوانی دلخواه"
                      };
                      session.Save(news);

                      transaction.Commit(); //پایان تراکنش
                  }
              }
          }

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

using System.Linq;
using NHibernate;
using NHibernate.Linq;
using NHSample2.Domain;

namespace NHSample2
{
  class NewsContext : NHibernateContext
  {
      public NewsContext(ISession session)
         : base(session)
     { }

     public IOrderedQueryable<News> News
     {
         get { return Session.Linq<News>(); }
     }

     public IOrderedQueryable<Category> Categories
     {
         get { return Session.Linq<Category>(); }
     }

     public IOrderedQueryable<User> Users
     {
         get { return Session.Linq<User>(); }
     }
  }
}

using System;
using FluentNHibernate.Cfg.Db;
using NHibernate;
using System.Linq;
using NHSample2.Domain;

namespace NHSample2
{
  class Program
  {
      static void Main(string[] args)
      {
          using (ISessionFactory sessionFactory = Config.CreateSessionFactory(
                  MsSqlConfiguration
                      .MsSql2008
                      .ConnectionString("Data Source=(local);Initial Catalog=HelloNHibernate;Integrated Security = true")
                      .ShowSql()
                  ))
          {
              using (ISession session = sessionFactory.OpenSession())
              {
                  using (ITransaction transaction = session.BeginTransaction())
                  {
                      using (NewsContext db = new NewsContext(session))
                      {
                          var query = from x in db.Users
                                      where x.UserName == "VahidNasiri"
                                      select x;

                          //اگر چیزی یافت شد
                          if (query.Any())
                          {
                              User vahid = query.First();
                              //نمایش اطلاعات کاربر
                              Console.WriteLine("Id: {0}, UserName: {0}", vahid.Id, vahid.UserName);
                              //به روز رسانی نام کاربر
                              vahid.UserName = "Vahid";
                              session.Update(vahid);

                              transaction.Commit(); //پایان تراکنش
                          }
                      }
                  }
              }
          }

          Console.WriteLine("Press a key...");
          Console.ReadKey();
      }
  }
}

      using FluentNHibernate.Conventions.Helpers;

      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
          .Conventions.Add()
              .Where(x => x.Namespace.EndsWith("Domain"))
               .Conventions.Add(
                 PrimaryKey.Name.Is(x => "ID"),
                 DefaultLazy.Always(),
                 ForeignKey.EndsWith("ID"),
                 Table.Is(t => "tbl" + t.EntityType.Name)                 
                 )
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly)
              .Configure(cfg);

          return cfg;
      }

using FluentNHibernate.Conventions;
using FluentNHibernate.Conventions.Instances;

namespace NHSample2.Conventions
{
  class MyStringLengthConvention : IPropertyConvention
  {
      public void Apply(IPropertyInstance instance)
      {
          instance.Length(500);
      }
  }
}

      public static Configuration GenerateMapping(IPersistenceConfigurer dbType)
      {
          var cfg = dbType.ConfigureProperties(new Configuration());

          new AutoPersistenceModel()
          .Conventions.Add()
              .Where(x => x.Namespace.EndsWith("Domain"))
               .Conventions.Add<MyStringLengthConvention>()
              .AddEntityAssembly(typeof(NHSample2.Domain.News).Assembly)
              .Configure(cfg);

          return cfg;
      }