Update demo

Src/Asp.NetCore2/SqliteTest/UserTestCases/UCodeFirst.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+namespace OrmTest
+{
+    public partial class NewUnitTest
+    {
+        public static void CodeFirst()
+        {
+            if (Db.DbMaintenance.IsAnyTable("UnitCodeTest1", false))
+                Db.DbMaintenance.DropTable("UnitCodeTest1");
+            Db.CodeFirst.InitTables<UnitCodeTest1>();
+            Db.CodeFirst.InitTables<Test00111>();
+            Db.DbMaintenance.TruncateTable<Test00111>();
+            Db.Insertable(new Test00111()).ExecuteCommand();
+            var list = Db.Queryable<Test00111>().ToList();
+            Db.CodeFirst.InitTables<Test00111121>();
+            Db.CodeFirst.InitTables<UnitByteArray1>();
+            Db.Insertable(new UnitByteArray1()
+            {
+                Data = new byte[] { 1, 2, 123, 31, 1 }
+            }).ExecuteCommand();
+            var list2=Db.Queryable<UnitByteArray1>().ToDataTable();
+            var x=Db.DbMaintenance.GetColumnInfosByTableName("`UnitByteArray1`", false);
+            if (x[0].Length != 18 && x[0].Scale != 0) throw new Exception("unit test error");
+            if (x[1].Length != 18 && x[1].Scale != 2) throw new Exception("unit test error");
+            if (x[2].Length != 0 && x[2].Scale != 0) throw new Exception("unit test error");
+            Db.CodeFirst.InitTables<UnitIndextest>();
+        }
+        [SqlSugar.SugarIndex("UnitIndextestIndex", nameof(UnitIndextest.Table), SqlSugar.OrderByType.Asc)]
+        public class UnitIndextest
+        {
+            public string Table { get; set; }
+            public string Id { get; set; }
+        }
+
+        public class UnitByteArray1 
+        {
+            [SugarColumn(IsNullable = true, ColumnDataType = "varchar(18)")]
+            public string Aa { get; set; }
+            [SugarColumn(IsNullable =true, ColumnDataType = "decimal(18,2)")]
+            public decimal A { get; set; }
+            public byte[] Data { get; set; }    
+        }
+        public class Test00111121
+        {
+            [SugarColumn(IsPrimaryKey = true)]
+            public string id { get; set; }
+            [SugarColumn(IsPrimaryKey =true)]
+            public string creater { get; set; }
+        }
+        public class Test00111
+        {
+            public int id { get; set; }
+            [SugarColumn(ColumnDataType = "guid",IsNullable =true)]
+            public Guid? creater { get; set; }
+        }
+        public class UnitCodeTest1
+        {
+            public int Id { get; set; }
+            public DateTime? CreateDate { get; set; }
+        }
+    }
+}