Mongodb笔记

var userData=db.FitExtuser.find({ "city" : { "$ne" : "胖星球" }, "weight" : { "$ne" : 58.0 }, "height" : { "$ne" : 165 }, "status" : "审核通过" }, { "weight" : 1, "height" : 1 }).sort({ "_id" : -1 });
var i=0;
var ps=0;
var bz=0;
var cz=0;
var fp=0;
while(userData.hasNext()){
print("i==>"+i);
var temp=userData.next();
var bmi=temp.weight/(temp.height*temp.height)*10000;
print("bmi==>"+bmi);
if(bmi<20){
ps=ps+1;
}else if(bmi>=20&&bmi<=22.6){
bz=bz+1;
}else if(bmi>=22.7&&bmi<=30){
cz=cz+1;
}else if(bmi>30){
fp=fp+1;
}
if(temp.weight!=0&&temp.height!=0){
i++;
}

}




print("偏瘦==>"+(ps/i)*100);
print("标准==>"+(bz/i)*100);
print("超重==>"+(cz/i)*100);
print("肥胖==>"+(fp/i)*100);