Run a raw sql query/command via EF 6

There are different ways to run a SQL command/query via Entity framework.

1.SqlQuery

In the entity(table) level :

var parentsList =  context.Parents
						.SqlQuery("Select * from dbo.Parents  where IsRich = 0 ")
						.ToList();			

or in the database level:

 var parentsList =  context.Database.SqlQuery<string>("Select * from dbo.Parents where IsRich = 0")
                              .ToList<Parents>();

2.*ExecuteSqlCommand

  var numberOfAffectedEtntities = context.Database.ExecuteSqlCommand(" "DELETE FROM Parents WHERE Id = 1";");

3.ObjectQuery.Execute

Old way(deprecated)

var objectContext = ((IObjectContextAdapter)context).ObjectContext;
var objectSet = objectContext.CreateObjectSet<Parent>();

var queryString = @"SELECT VALUE p FROM Parent AS p WHERE p.IsRich = @IsRich";
var parentQuery = objectContext.CreateQuery<Product>(queryString, new ObjectParameter("IsRich", 0);
var parentResults = parentQuery.Execute(MergeOption.AppendOnly);
``