public class BaseEntity
{
   public int Id { set; get; }
   public DateTime? DateAdded { set; get; }
   public DateTime? DateUpdated { set; get; }
}

public class Person : BaseEntity
{
   public string FirstName { get; set; }
   public string LastName { get; set; }
}

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    modelBuilder.Ignore<BaseEntity>();

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
   modelBuilder.Ignore<BaseEntity>();
   foreach (var entityType in modelBuilder.Model.GetEntityTypes())
   {
     var dateAddedProperty = entityType.FindProperty("DateAdded");
     dateAddedProperty.ValueGenerated = ValueGenerated.OnAdd;
     dateAddedProperty.SqlServer().DefaultValueSql = "getdate()";
     var dateUpdatedProperty = entityType.FindProperty("DateUpdated");
     dateUpdatedProperty.ValueGenerated = ValueGenerated.OnAddOrUpdate;
     dateUpdatedProperty.SqlServer().ComputedColumnSql = "getdate()";
   }

public class Blog
{
   public int BlogId { get; set; }
   public string Url { get; set; }
}

public class RssBlog : Blog
{
   public string RssUrl { get; set; }
}

class MyContext : DbContext
{
   public DbSet<Blog> Blogs { get; set; }
   protected override void OnModelCreating(ModelBuilder modelBuilder)
   {
      modelBuilder.Entity<Blog>()
       .HasDiscriminator<string>("blog_type")
       .HasValue<Blog>("blog_base")
       .HasValue<RssBlog>("blog_rss");
   }
}

 var blog1 = db.Blogs.OfType<RssBlog>().FirstOrDefault(x => x.RssUrl == "………");

let outer = 'I am so eccentric!'
{
  let inner = 'I play with neighbors in my block and the sewers'
  {
    let innermost = 'I only play with neighbors in my block'
  }
  // accessing innermost here would throw
}
// accessing inner here would throw
// accessing innermost here would throw

{
  let _nested = 'secret'
  function nested () {
    return _nested
  }
}
console.log(nested())

var nested;
{
  let _nested = 'secret'
  nested = function () {
    return _nested
  }
}
console.log(nested())
// <- 'secret'

doWork = function()
{
   const value = 10;
   value = 11;
   return value;
}

const items = { people: ['you', 'me'] }
items.people.push('test')
console.log(items)

let x = 10;
{
   let x = 3;
   console.log(x);
}
console.log(x);

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];

The specified framework 'Microsoft.NETCore.App', version '1.1.2' was not found.

"program": "${workspaceRoot}/src/ASPNETCoreIdentitySample/bin/Debug/netcoreapp2.0/ASPNETCoreIdentitySample.dll",

ROW_NUMBER() OVER(PARTITION BY [ForeignKeyId] ORDER BY [ForeignKeyId]) [SomeSequence]

public double Area
{
        get { return _height * _baseLength * 0.5; }
}

public double Area()
{
      return _height * _baseLength * 0.5;
}