/// <summary>
        ///  创建SQL实体文件,指定表名
        /// </summary>
        public void CreateClassFilesByTableNames(SqlSugarClient db, string fileDirectory, string nameSpace, params string[] tableNames)
        {
            string sql    = GetCreateClassSql(null);
            var    tables = db.GetDataTable(sql);

            if (tables != null && tables.Rows.Count > 0)
            {
                foreach (DataRow dr in tables.Rows)
                {
                    string tableName = dr["name"].ToString().ToLower();
                    if (tableNames.Any(it => it.ToLower() == tableName))
                    {
                        var currentTable = db.GetDataTable(string.Format("select  * from {0} WHERE rownum<=1", tableName.ToOracleTableName()));
                        var classCode    = DataTableToClass(currentTable, tableName, nameSpace);
                        FileSugar.WriteText(fileDirectory.TrimEnd('\\') + "\\" + tableName + ".cs", classCode);
                    }
                }
            }
        }