/// <summary>
        /// 获取表结构信息
        /// </summary>
        /// <param name="db"></param>
        /// <param name="tableName"></param>
        /// <returns></returns>
        public List <PubModel.DataTableMap> GetTableColumns(SqlSugarClient db, string tableName)
        {
            string sql = SqlSugarTool.GetTtableColumnsInfo(tableName);

            return(db.SqlQuery <PubModel.DataTableMap>(sql));
        }