这是我的文件:
{ "_id" : "ea:site:1000000_cate:-1:date:2014-05-12",
"dateTime" : ISODate("2014-05-11T17:00:00Z"),
"site" : 1000000,
"category" : -1,
"visit" : 8619007,
"pageview" : 34190331,
"timespan" : NumberLong(479),
"uniqueVisit" : 3581170,
"pagePerVisit" : 3.9668526780405213,
"bounceRate" : 48.43801758071321,
"newVisit" : 12.231621858238226,
"timeType" : 2
}
这是我的查询:
db.getCollection("eclick.analytics.1000000.-1").aggregate(
{ "$match" : { "site" : 1000000 , "category" : -1 }},
{ "$project" : { "_id" : 1 ,
"pageview" : 1 ,
"visit" : 1 ,
"uniqueVisit" : 1 ,
"timespan" : 1 ,
"pagePerVisit" : 1 ,
"bounceRate" : 1 ,
"newVisit" : 1}},
{ "$group" : { "_id" : { "$month" : ISODate($dateTime)} ,
"pageview" : { "$sum" : "$pageview"} ,
"visit" : { "$sum" : "$visit"} ,
"uniqueVisit" : { "$sum" : "$uniqueVisit"} ,
"timespan" : { "$avg" : "$timespan"} ,
"pagePerVisit" : { "$avg" : "$pagePerVisit"} ,
"bounceRate" : { "$avg" : "$bounceRate"} ,
"newVisit" : { "$avg" : "$newVisit"}}});
-
Tue May 27 15:38:37.660 ReferenceError: $dateTime is not defined
-
db.getCollection("eclick.analytics.1000000.-1").aggregate(
{ "$match" : { "site" : 1000000 , "category" : -1 }},
{ "$project" : { "_id" : 1 ,
"pageview" : 1 ,
"visit" : 1 ,
"uniqueVisit" : 1 ,
"timespan" : 1 ,
"pagePerVisit" : 1 ,
"bounceRate" : 1 ,
"newVisit" : 1}},
{ "$group" : { "_id" : { "$month" : "$dateTime"} ,
"pageview" : { "$sum" : "$pageview"} ,
"visit" : { "$sum" : "$visit"} ,
"uniqueVisit" : { "$sum" : "$uniqueVisit"} ,
"timespan" : { "$avg" : "$timespan"} ,
"pagePerVisit" : { "$avg" : "$pagePerVisit"} ,
"bounceRate" : { "$avg" : "$bounceRate"} ,
"newVisit" : { "$avg" : "$newVisit"}}});
-
Error: Printing Stack Trace
at printStackTrace (src/mongo/shell/utils.js:37:15)
at DBCollection.aggregate (src/mongo/shell/collection.js:897:9)
at (shell):1:49
Tue May 27 15:38:44.100 aggregate failed: {
"errmsg" : "exception: can't convert from BSON type EOO to Date",
"code" : 16006,
"ok" : 0
} at src/mongo/shell/collection.js:898
你对这个问题有什么看法吗?谢谢
答案 0 :(得分:2)
您要从projection
$dateTime
字段中排除,因此在$group
阶段您没有该字段。