我是否在其他条件下错误地使用了$gte和$lte？我得到了空数组，但是当我这样做时user_email:req.bodu.user_email我能够获取所有数据。functionfirstDayOfMonth(){vard=newDate(Date.apply(null,arguments));d.setDate(1);returnd.toISOString();}functiontomorrowDate(){vard=newDate();d.setDate(d.getDate()+1)returnd.toISOString();}Users.find({"user_email":re

我是否在其他条件下错误地使用了$gte和$lte？我得到了空数组，但是当我这样做时user_email:req.bodu.user_email我能够获取所有数据。functionfirstDayOfMonth(){vard=newDate(Date.apply(null,arguments));d.setDate(1);returnd.toISOString();}functiontomorrowDate(){vard=newDate();d.setDate(d.getDate()+1)returnd.toISOString();}Users.find({"user_email":re

让我举个例子:mongos>db.test.insert({a:0.1,b:1,c:0.01})mongos>db.test.insert({a:0.2,b:2,c:0.02})mongos>db.test.insert({a:0.3,b:3,c:0.03})mongos>db.test.find(){"_id":ObjectId("5225e072dd144e45bf406d42"),"a":0.1,"b":1,"c":0.01}{"_id":ObjectId("5225e07add144e45bf406d43"),"a":0.2,"b":2,"c":0.02}{"_id":Obje

让我举个例子:mongos>db.test.insert({a:0.1,b:1,c:0.01})mongos>db.test.insert({a:0.2,b:2,c:0.02})mongos>db.test.insert({a:0.3,b:3,c:0.03})mongos>db.test.find(){"_id":ObjectId("5225e072dd144e45bf406d42"),"a":0.1,"b":1,"c":0.01}{"_id":ObjectId("5225e07add144e45bf406d43"),"a":0.2,"b":2,"c":0.02}{"_id":Obje

这个查询有什么问题？我试图在mongodb服务器上运行它并收到如下错误-“异常:错误查询:BadValue未知顶级运算符:$gte”。谁能告诉我这有什么问题吗？db.scores.aggregate([{$match:{$or:[{$gte:["$score",30]},{$lte:["$score",60]}]}},{$group:{_id:"$gamer",games:{$sum:1}}}])样本数据:{"_id":"545665cef9c60c133d2bce72","score":85,"gamer":"Latern"}/*1*/{"_id":"545665cef9c60c13