转移.net core 3.1，为.NET 5做准备

OpenAuth.Repository/QueryObj/SysTableColumn.cs

@@ -0,0 +1,38 @@
+namespace OpenAuth.Repository.QueryObj
+{
+    /// <summary>
+    /// 系统表列信息
+    /// </summary>
+     public class SysTableColumn 
+    {
+        /// <summary>
+        /// 列名
+        /// <summary>
+        public string ColumnName { get; set; }
+        /// <summary>
+        /// 列注释
+        /// <summary>
+        public string Comment { get; set; }
+        /// <summary>
+        /// 类型，已转为.net类型
+        /// <summary>
+        public string ColumnType { get; set; }
+        /// <summary>
+        /// 最大长度
+        /// <summary>
+        public int? MaxLength { get; set; }
+        /// <summary>
+        /// 是否可空
+        /// <summary>
+        public int? IsNull { get; set; }
+        /// <summary>
+        /// 是否显示
+        /// <summary>
+        public int? IsDisplay { get; set; }
+        /// <summary>
+        /// 是否主键
+        /// <summary>
+        public int? IsKey { get; set; }
+        public string EntityType { get; set; }
+    }
+}