Support split table

Src/Asp.Net/SqlServerTest/Demo/DemoN_SplitTable.cs

@@ -0,0 +1,36 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest 
+{
+    public class DemoN_SplitTable
+    {
+        public static void Init()
+        {
+            Console.WriteLine("");
+            Console.WriteLine("#### CodeFirst Start ####");
+            SqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
+            {
+                DbType = DbType.SqlServer,
+                ConnectionString = Config.ConnectionString,
+                InitKeyType = InitKeyType.Attribute,
+                IsAutoCloseConnection = true
+            });
+            db.CodeFirst.SplitTables().InitTables<OrderSpliteTest>();
+            db.Queryable<OrderSpliteTest>().SplitTable(it => it.Take(3)).ToList();
+            Console.WriteLine("#### CodeFirst end ####");
+        }
+
+        [SqlSugar.SugarTable("Order{year}{month}{day}")]
+        public class OrderSpliteTest 
+        {
+            [SugarColumn(IsPrimaryKey =true)]
+            public  Guid  Pk{ get; set; }
+            public string Name { get; set; }
+        }
+    }
+}