Update Gbase dbfirst

Src/Asp.NetCore2/GbaseTest/Demo/Demo0_SqlSugarClient.cs

@@ -70,14 +70,8 @@ namespace OrmTest
             //db.DbMaintenance.CreateDatabase();
 
             //Use db query
-            var dt = db.Ado.GetDataTable(@"
-select
-trim(a.tabname) as name,
-trim(b.comments) as comment 
-from systables a
-left join syscomments b on b.tabname = a.tabname
-where a.tabtype in ('T', 'V')  and not (a.tabname like 'sys%') AND a.tabname <>'dual'");
-
+      
+           var dt2= db.Ado.GetDataReader("select * from order").GetSchemaTable();
         
             //Create tables
             db.CodeFirst.InitTables(typeof(OrderItem),typeof(Order));

Src/Asp.NetCore2/GbaseTest/Program.cs

@@ -14,6 +14,7 @@ namespace GbaseTest
             Demo2_Updateable.Init();
             Demo7_Ado.Init();
             DemoE_CodeFirst.Init();
+            DemoD_DbFirst.Init();
             Console.WriteLine("Hello World!");
         }
     }