{
"_id" : ObjectId("5a1fde257756dca1c86f2d23"),
"_class" : "com.aaa.LoginHistory",
"uid" : "94989242",
"ip" : "192.168.1.219",
"imei" : "865736037366641",
"epid" : "33189023-9472-4f30-81cf-8c7d13132aae5",
"platform" : "Android",
"timestamp" : "1512037117100",
"address" : "中国,江苏省,南京市,建邺区"
}
db.loginHistory.aggregate([
{$match:{"timestamp":{"$lte":"1513412162000","$gte":"1512548162000"}}},
{$group:{_id:"$uid"}}
])
db.loginHistory.aggregate(
[
{
$match:{
timestamp:{
$lte:"1513399696240",
$gte:"1513389696240"
}
}
},
{
$project:{
uid:1,
timestamp:1,
_id:0
}
},
{
$group:{
_id:{
uid:"$uid",
date:{
$dateToString:{
format:"%Y-%m-%d",
date:{
$add:[new Date(0),parseInt("$timestamp")]
}
}
}
}
}
},
{
$group:{
_id:{
date:"$_id.date"
},
count:{"$sum":1}
}
}
]
)
但是问题又来了,执行报错:
assert: command failed: {
"ok" : 0,
"errmsg" : "$dateToString is only defined on year 0-9999, tried to use year 292278994",
"code" : 18537
} : aggregate failed
_getErrorWithCode@src/mongo/shell/utils.js:25:13
doassert@src/mongo/shell/assert.js:13:14
assert.commandWorked@src/mongo/shell/assert.js:287:5
DBCollection.prototype.aggregate@src/mongo/shell/collection.js:1312:5
百思不得其解,尝试性的把 parseInt("$timestamp")改成 parseInt("1513399696240"),执行得到结果:
{ "_id" : { "date" : "2017-12-16" }, "count" : 19 }
。。。。。。。。。。。。。求助各位大哥
1
rails3 2017-12-08 16:03:54 +08:00
map reduce 可以解决
|