netstat -nltp | grep 27017    #查看MongoDB端口
./mongodb-start start    # 启动
./mongodb-stop stop    #停止
./mongo 127.0.0.1:27017    # 禁止auth后登陆MongoDB
>show dbs;    #显示数据库
>db;    # 显示当前数据库
>use admin;    # 转到数据库admin
>db.auth('root','123456');     # 以用户名密码登录数据库

db.dis_specimen.remove({"barCode" : "201712212200"}) # 删除

db.par_func.find().count(); # 统计表par_func记录数

function updateDelayDate() {
    var details = db.dis_specimen_detail.find({
        "delayDate":{$ne:""}
    });
    //var flag = false;
    while (details.hasNext()) {
        var detail = details.next();
        var date = detail.delayDate;
        var id = detail._id;
        if (date.length == 10) {

            var newDate = date + " 00:00:00";
            db.dis_specimen_detail.updateOne({
                "_id" : id
            }, {
                $set : {
                    "delayDate" : newDate
                }
            });
            print("_id:"+id+",updated delayDate to "+newDate);
        }
        //flag = true;
    }
    //return flag;
};

updateDelayDate();

// 更新表par_customer中name以yi开头的记录，把active字段值更新为0 db.getCollection('par_customer').find({"name":/^yi/}).forEach(function(item){ db.getCollection('par_customer').update({"_id":item._id},{$set:{"active": "0"}}) })

// 更新表test_item_price中"standardPrice":null的数据为66 db.test_item_price.find({"standardPrice":null}).forEach( function(item){
db.test_item_price.update({"_id" : item._id},{"$set":{"standardPrice":66}},false,true) } )