Add db.SqlQueryable

Src/Asp.Net/SqlServerTest/Demos/1_Query.cs

@@ -28,6 +28,13 @@ namespace OrmTest.Demo
             Simple();
             Async();
             Subqueryable();
+            SqlQueryable();
+        }
+
+        private static void SqlQueryable()
+        {
+            var db = GetInstance();
+            var list = db.SqlQueryable<Student>("select * from student").ToPageList(1, 2);
         }
 
         private static void Subqueryable()

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs

@@ -75,6 +75,9 @@ namespace SqlSugar
         {
             return UtilMethods.GetPackTable(sql,shortName);
         }
+        public virtual string GetDefaultShortName() {
+            return "t";
+        }
         public virtual void RepairReplicationParameters(ref string appendSql, SugarParameter[] parameters, int addIndex)
         {
             UtilMethods.RepairReplicationParameters(ref appendSql,parameters,addIndex);

Src/Asp.Net/SqlSugar/Interface/ISqlBuilder.cs

@@ -27,6 +27,7 @@ namespace SqlSugar
         string GetTranslationColumnName(string propertyName);
         string GetNoTranslationColumnName(string name);
         string GetPackTable(string sql,string shortName);
+        string GetDefaultShortName();
         void RepairReplicationParameters(ref string appendSql, SugarParameter[] parameters, int addIndex);
     }
 }

Src/Asp.Net/SqlSugar/SqlSugarClient.cs

@@ -337,6 +337,14 @@ namespace SqlSugar
         }
         #endregion
 
+        #region SqlQueryable
+        public ISugarQueryable<T> SqlQueryable<T>(string sql) where T : class, new()
+        {
+            var sqlBuilder = InstanceFactory.GetSqlbuilder(this.Context.CurrentConnectionConfig);
+            return this.Queryable<T>().AS(sqlBuilder.GetPackTable(sql, sqlBuilder.GetDefaultShortName()));
+        }
+        #endregion
+
         #region Insertable
         public virtual IInsertable<T> Insertable<T>(T[] insertObjs) where T : class, new()
         {