USE [WideWorldImporters];
GO

SET STATISTICS IO ON;
GO


/*
Query with a hash join
*/
SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Warehouse].[StockItems] [si]
    JOIN [Sales].[OrderLines] [ol]
    ON [si].[StockItemID] = [ol].[StockItemID];
GO

ALTER TABLE [Warehouse].[StockItems] ADD  CONSTRAINT [PK_Warehouse_StockItems] PRIMARY KEY CLUSTERED
(
   [StockItemID] ASC
)

CREATE NONCLUSTERED COLUMNSTORE INDEX [NCCX_Sales_OrderLines] ON [Sales].[OrderLines]
(
[OrderID],
[StockItemID],
[Description],
[Quantity],
[UnitPrice],
[PickedQuantity]
)

CREATE NONCLUSTERED INDEX [IX_OrderLines_StockItemID]
ON [Sales].[OrderLines](
[StockItemID] ASC,
[PickedQuantity] ASC,
[OrderID])
ON [PRIMARY];
GO

SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Sales].[OrderLines] [ol]
    JOIN [Warehouse].[StockItems] [si]
    ON [ol].[StockItemID] = [si].[StockItemID]
OPTION
(RECOMPILE);
GO

CREATE NONCLUSTERED INDEX [IX_OrderLines_StockItemID_Compressed]
ON [Sales].[OrderLines](
[StockItemID] ASC,
[PickedQuantity] ASC,
[OrderID])
WITH (DATA_COMPRESSION = PAGE)
ON [PRIMARY];
GO

SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Sales].[OrderLines] [ol]
    JOIN [Warehouse].[StockItems] [si]
    ON [ol].[StockItemID] = [si].[StockItemID]
OPTION
(RECOMPILE);
GO

SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Sales].[OrderLines] [ol] WITH (INDEX (IX_Sales_OrderLines_Perf_20160301_02))
    JOIN [Warehouse].[StockItems] [si]
    ON [ol].[StockItemID] = [si].[StockItemID];
GO

SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Sales].[OrderLines] [ol] WITH (INDEX (IX_OrderLines_StockItemID))
    JOIN [Warehouse].[StockItems] [si]
    ON [ol].[StockItemID] = [si].[StockItemID];
GO

SELECT
    [ol].[OrderID],
    [ol].[OrderLineID],
    [ol].[StockItemID],
    [ol].[PickedQuantity],
    [si].[StockItemName],
    [si].[UnitPrice]
FROM [Sales].[OrderLines] [ol] WITH (INDEX (IX_OrderLines_StockItemID_Compressed))
    JOIN [Warehouse].[StockItems] [si]
    ON [ol].[StockItemID] = [si].[StockItemID];
GO

SELECT COUNT(*)
FROM [Sales].[Orders];

SELECT COUNT_BIG (*)
FROM [Sales].[Orders];

CREATE FUNCTION dbo.CountProductsSold (
@SalesPersonID INT
) RETURNS INT

AS

BEGIN
    DECLARE @SoldCount INT;

    SELECT @SoldCount = COUNT(DISTINCT [ol].[StockItemID])
    FROM [Sales].[Orders] [o]
        JOIN [Sales].[OrderLines] [ol]
        ON [o].[OrderID] = [ol].[OrderID]
    WHERE [o].[SalespersonPersonID] = @SalesPersonID

    RETURN (@SoldCount);

END

SELECT
    [FullName] AS [SalesPerson],
    [dbo].[CountProductsSold]([PersonID]) AS [NumberOfProductsSold]
FROM [Application].[People]
WHERE [IsSalesperson] = 1;

SELECT
    [fs].[last_execution_time],
    [fs].[execution_count],
    [fs].[total_logical_reads]/[fs].[execution_count] [AvgLogicalReads],
    [fs].[max_logical_reads],
    [t].[text],
    [p].[query_plan]
FROM sys.dm_exec_function_stats [fs]
CROSS APPLY sys.dm_exec_sql_text([fs].sql_handle) [t]
CROSS APPLY sys.dm_exec_query_plan([fs].[plan_handle]) [p];

public abstract class BaseEntity
{
    protected BaseEntity()
    {
        TrackingState = TrackingState.Nochange;
    }

    public TrackingState TrackingState { get; set; }
}

public enum TrackingState
{
    Nochange,
    Add,
    Update,
    Remove,
}

public class Customer : BaseEntity
{
    public int CustomerId { get; set; }
    public string Name { get; set; }
    public string Company { get; set; }
    public virtual ICollection<Phone> Phones { get; set; }
}

public class Phone : BaseEntity
{
    public int PhoneId { get; set; }
    public string Number { get; set; }
    public string PhoneType { get; set; }
    public int CustomerId { get; set; }
    public virtual Customer Customer { get; set; }
}

public class Recipe4Context : DbContext
{
    public Recipe4Context() : base("Recipe4ConnectionString") { }
    public DbSet<Customer> Customers { get; set; }
    public DbSet<Phone> Phones { get; set; }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        // Do not persist TrackingState property to data store
        // This property is used internally to track state of
        // disconnected entities across service boundaries.
        // Leverage the Custom Code First Conventions features from Entity Framework 6.
        // Define a convention that performs a configuration for every entity
        // that derives from a base entity class.
        modelBuilder.Types<BaseEntity>().Configure(x => x.Ignore(y => y.TrackingState));
        modelBuilder.Entity<Customer>().ToTable("Customers");
        modelBuilder.Entity<Phone>().ToTable("Phones");
}
}

<connectionStrings>
  <add name="Recipe4ConnectionString"
    connectionString="Data Source=.;
    Initial Catalog=EFRecipes;
    Integrated Security=True;
    MultipleActiveResultSets=True"
    providerName="System.Data.SqlClient" />
</connectionStrings>

protected void Application_Start()
{
    // Disable Entity Framework Model Compatibilty
    Database.SetInitializer<Recipe1Context>(null);
    // The bidirectional navigation properties between related entities
    // create a self-referencing loop that breaks Web API's effort to
    // serialize the objects as JSON. By default, Json.NET is configured
    // to error when a reference loop is detected. To resolve problem,
    // simply configure JSON serializer to ignore self-referencing loops.
    GlobalConfiguration.Configuration.Formatters.JsonFormatter
        .SerializerSettings.ReferenceLoopHandling =
            Newtonsoft.Json.ReferenceLoopHandling.Ignore;
    ...
}

public static EntityState Set(TrackingState trackingState)
{
    switch (trackingState)
    {
        case TrackingState.Add:
            return EntityState.Added;
        case TrackingState.Update:
            return EntityState.Modified;
        case TrackingState.Remove:
            return EntityState.Deleted;
        default:
            return EntityState.Unchanged;
    }
}

public class CustomerController : ApiController
{
    // GET api/customer
    public IEnumerable<Customer> Get()
    {
        using (var context = new Recipe4Context())
        {
            return context.Customers.Include(x => x.Phones).ToList();
        }
    }

    // GET api/customer/5
    public Customer Get(int id)
    {
        using (var context = new Recipe4Context())
        {
            return context.Customers.Include(x => x.Phones).FirstOrDefault(x => x.CustomerId == id);
        }
    }

    [ActionName("Update")]
    public HttpResponseMessage UpdateCustomer(Customer customer)
    {
        using (var context = new Recipe4Context())
        {
            // Add object graph to context setting default state of 'Added'.
            // Adding parent to context automatically attaches entire graph
            // (parent and child entities) to context and sets state to 'Added'
            // for all entities.
            context.Customers.Add(customer);
            foreach (var entry in context.ChangeTracker.Entries<BaseEntity>())
            {
                entry.State = EntityStateFactory.Set(entry.Entity.TrackingState);
                if (entry.State == EntityState.Modified)
                {
                    // For entity updates, we fetch a current copy of the entity
                    // from the database and assign the values to the orginal values
                    // property from the Entry object. OriginalValues wrap a dictionary
                    // that represents the values of the entity before applying changes.
                    // The Entity Framework change tracker will detect
                    // differences between the current and original values and mark
                    // each property and the entity as modified. Start by setting
                    // the state for the entity as 'Unchanged'.
                    entry.State = EntityState.Unchanged;
                    var databaseValues = entry.GetDatabaseValues();
                    entry.OriginalValues.SetValues(databaseValues);
                }
            }

        context.SaveChanges();
    }

    return Request.CreateResponse(HttpStatusCode.OK, customer);
}

    [HttpDelete]
    [ActionName("Cleanup")]
    public HttpResponseMessage Cleanup()
    {
        using (var context = new Recipe4Context())
        {
            context.Database.ExecuteSqlCommand("delete from phones");
            context.Database.ExecuteSqlCommand("delete from customers");
            return Request.CreateResponse(HttpStatusCode.OK);
        }
    }
}

public async Task<Store> FindClosestStore(DbGeography location)
{
    using (var context = new StoreContext())
    {
        return await (from s in context.Stores
            orderby s.Location.Distance(location)
            select s).FirstAsync();
    }
}

 C:\>sqlcmd -S .
1> create login [MachineName\TestUser] from windows;
2> go
1> exec sp_addsrvrolemember 'MachineName\TestUser','sysadmin'
2> go
1> select is_srvrolemember('sysadmin', 'MachineName\TestUser')
2> go
-----------
1
(1 rows affected)
1>

 C:\>sqlcmd -S .
1> use master
2> go
Changed database context to 'master'.
1> create login test_user with password='123#123'
2> go
1> exec sp_addsrvrolemember 'test_user','sysadmin'
2> go
1>

using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
using System.Reflection;

namespace MyNamespace
{
    public abstract class BaseEntity
    {
        public int Id { set; get; }
        public string CreatedBy { set; get; }
    }

    public class User : BaseEntity
    {
        public string Name { get; set; }
    }

    public class MyContext : DbContext
    {
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            var asm = Assembly.GetExecutingAssembly();
            loadEntities(asm, modelBuilder, "MyNamespace");
        }

        void loadEntities(Assembly asm, DbModelBuilder modelBuilder, string nameSpace)
        {
            var entityTypes = asm.GetTypes()
                                    .Where(type => type.BaseType != null &&
                                           type.Namespace == nameSpace &&
                                           type.BaseType.IsAbstract &&
                                           type.BaseType == typeof(BaseEntity))
                                    .ToList();

            var entityMethod = typeof(DbModelBuilder).GetMethod("Entity");
            entityTypes.ForEach(type =>
            {
                entityMethod.MakeGenericMethod(type).Invoke(modelBuilder, new object[] { });
            });
        }
    }

    public class Configuration : DbMigrationsConfiguration<MyContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
            AutomaticMigrationDataLossAllowed = true;
        }

        protected override void Seed(MyContext context)
        {
            context.Set<User>().Add(new User { Name = "name-1" });
            context.Set<User>().Add(new User { Name = "name-2" });
            context.Set<User>().Add(new User { Name = "name-3" });
            base.Seed(context);
        }
    }

    public static class Test
    {
        public static void RunTests()
        {
            Database.SetInitializer(new MigrateDatabaseToLatestVersion<MyContext, Configuration>());
            using (var context = new MyContext())
            {
                var user1 = context.Set<User>().Find(1);
                if (user1 != null)
                    Console.WriteLine(user1.Name);
            }
        }
    }
}

First Name:<br/>
<input type="text" id="txtfname" /><br/>
Last Name:<br/>
<input type="text" id=txtlname /><br/>
Number:<br/>
<input type="tel" id="txttel" /><br/>
<button id="btnsubmit">Save</button><br/>

function GetValues()
{
  let fname=$("#txtfname").val();
  let lname=$("#txtlname").val()
  let tel=$("#txttel").val();
  let row=
  {
    fname:fname,
    lname:lname,
    number:tel
  };
  return row;
}

$("#btnsubmit").click((e)=>{
  e.preventDefault();
  let row=GetValues();

  //save in db
  //get last id
  let statement==db.prepare("select id from numbers order by id desc limit 1");
  let lastRecord=statement.getAsObject({}).id;
  row.id=lastRecord++;
  let count=db.prepare("select count(*) as count from numbers order by id desc").getAsObject({}).count;
  statement.free();
  let insertCommand="insert into numbers values(?,?,?,?)";
  db.run(insertCommand,[row.id,row.fname,row.lname,String(row.number)])
  let newcount=db.prepare("select count(*) as count from numbers order by id desc").getAsObject({}).count;
  SaveChanges();

//show in the table
if(count<newcount)
{
  AddToTable(row);
}
});
});

var statement= db.prepare("SELECT * FROM NUMBERS WHERE fname=@fname AND lname=@lname");

var result = statement .getAsObject({'@fname' :'ali', '@lname' : 'yeganeh'});

statement.bind(['hossein','yeganeh']);

while(statement.step())
{
     var rec=statement.get();
}

  const {ipcRenderer} = require('electron');
function SaveChanges()
{
    ipcRenderer.send("SaveToDb");
}

function AddToTable(row)
{
  let tableBody=$("#people");
  let rowTemplate=`<tr><td>${row.fname}</td><td>${row.lname}</td><td>${row.number}</td><td><button class=
  "btn btn-success btnupdate" data-id="${row.id}" >Edit</button></td></tr>`;
  tableBody.append(rowTemplate);
}

$("#people").on('click','.btnupdate',function(e)
{
  e.preventDefault();

  row.id=$(this).data("id");
  let row=GetValues();
  db.run("UPDATE NUMBERS SET FNAME=?,LNAME=?,NUMBER=? WHERE ID=?",[row.fname,row.lname,row.number,row.id]);
  SaveChanges();
  
  tr=$(this).closest("tr");
  let column=0;
  tr.find("td").each(function(index)
  {
    oldRow=$(this);
    switch(column)
    {
      case 0: //fname
        oldRow.text(row.fname);
        break;
      case 1: //lname
        oldRow.text(row.lname);
        break;
      case 2: //number
        oldRow.text(row.number);
        break;
    }
    column++;
  });
});

db.each("SELECT name,age FROM users WHERE age >= $majority",
  {$majority:18},
  function(row){console.log(row.name)},
                                function(){console.log("done");}
  );

SELECT ID FROM NUMBERS;SELECT FNAME,LNAME FROM NUMBERS

 [
         {columns: ['id'], values:[[1],[2],[3]]},
         {columns: ['fname','lname'], values:[['ali','yeganeh'],['hossein','yeganeh'],['mohammad','yeganeh']]}
    ]

var records=db.exec("select * from numbers");
let values=records[0].values;
let length=values.length;

for(let i=0;i<length;i++)
{
  let object=values[i];
  let row={
    id:object[0],
    fname:object[1],
    lname:object[2],
    number:object[3]
  };
  AddToTable(row);
}