摘要: //1.创建函数 function f_getfield(coll_name) { mr = db.runCommand({ "mapreduce": coll_name, "map": function() { for (var key in this) { emit(key, null); } 阅读全文
posted @ 2023-03-28 18:35 longx888 阅读(190) 评论(0) 推荐(0)