在日期时间的月、日、年...上查询 Mongodb
Posted
技术标签:
?????????????????...??? Mongodb??????:Query Mongodb on month, day, year... of a datetime ??????:2011-12-29 12:22:13 ??????:????? mongodb,????????????????????
????“17-11-2011 18:00”???:
date = datetime.datetime(2011, 11, 17, 18, 0)
db.mydatabase.mycollection.insert("date" : date)
????????
month = 11
db.mydatabase.mycollection.find("date.month" : month)
?
day = 17
db.mydatabase.mycollection.find("date.day" : day)
?????????????
??????:
?????????????,??????????????(??????? cmets)???,DrColossos ??????????????......??????? ??????????????????????????????? MongoDB ???,?????????????????????,???????????????(???????????????) )???????????,????????,?????(??????)?????? ?????1?:????????????????????????????,????????????
var start = new Date(2010, 11, 1);
var end = new Date(2010, 11, 30);
db.posts.find(created_on: $gte: start, $lt: end);
//taken from http://cookbook.mongodb.org/patterns/date_range/
????:
?????????????????????????????????? @DrColossos,??????? $where ??? @DrColossos,??????????.. $where ??????????,??????????????... ????end ?????,??????? 31 ???????,month=11 ? 12 ?,??? 11 ?? Op ????? Nov.
?,????????...???????????,??????????....?????28?, 29 ??30 ?? 31 ?……?????????????:??: $year: 2014, $month:4 ????????,??????????2?:
?????????????????? mongodb ?????????????? $where javascript ???
db.mydatabase.mycollection.find($where : function() return this.date.getMonth() == 11 )
????
db.mydatabase.mycollection.find($where : 'return this.date.getMonth() == 11')
(????????)
???? shell ?????????
>date = ISODate("2011-09-25T10:12:34Z")
> date.getYear()
111
> date.getMonth()
8
> date.getdate()
25
??:
??????????? $where?????????????@kamaradclimber ?@dcrosta ?????cmets??????????,????????????
????$where Clauses and Functions in Queries??????
????:
?????????,?????????????,??????? $where :????????????@DrColossos ??????????? @kamaradclimber,??,??,???????????,??????????????????..???..?????????????????.... ?????????????????????????:mongodb.org/display/DOCS/…????? db.eval ??????????,????????:-) DrColossos ????????? ????????,???mongod ??????javascript ????????javascript($where?map-reduce ???)????????,?????????????????,???????? javascript ????????????$where ?????????3?:
?????????,????????????????????$where ??,???????,?????????
????:
???,???????(AKA index ^^)??????4?:???????????????,????????:
// Anything greater than this month and less than the next month
db.posts.find(created_on: $gte: new Date(2015, 6, 1), $lt: new Date(2015, 7, 1));
?????????????
// This may not find document with date as the last date of the month
db.posts.find(created_on: $gte: new Date(2015, 6, 1), $lt: new Date(2015, 6, 30));
// don't do this too
db.posts.find(created_on: $gte: new Date(2015, 6, 1), $lte: new Date(2015, 6, 30));
????:
?????????????????????????????????????????????5?:????????????,?$dayOfYear?$dayOfWeek?$month?$year???????????????
??,?????? 2016 ? 4 ????????,??????????
db.getCollection('orders').aggregate(
[
$project:
doc: "$$ROOT",
year: $year: "$created" ,
month: $month: "$created" ,
day: $dayOfMonth: "$created"
,
$match : "month" : 4, "year": 2016
]
)
????????????????,$$ROOT ?????????????????????,????????????????
?????????????,???????????????????????,???the link?
????:
???????????????????,??????? @Punnet Singh,??,?????? createdAt ?????????????????????????6?:?????MongoDB_DataObject wrapper ???????:
$model = new MongoDB_DataObject('orders');
$model->whereAdd('MONTH(created) = 4 AND YEAR(created) = 2016');
$model->find();
while ($model->fetch())
var_dump($model);
??,???,?????????:
$model = new MongoDB_DataObject();
$model->query('SELECT * FROM orders WHERE MONTH(created) = 4 AND YEAR(created) = 2016');
while ($model->fetch())
var_dump($model);
????:
?????7?:??$expr ???,?????????????????????????????Date Aggregation Operators,????:
month = 11
db.mydatabase.mycollection.find(
"$expr":
"$eq": [ "$month": "$date" , month ]
)
?
day = 17
db.mydatabase.mycollection.find(
"$expr":
"$eq": [ "$dayOfMonth": "$date" , day ]
)
??????aggregate() ????????,?????$redact ??:
month = 11
db.mydatabase.mycollection.aggregate([
"$redact":
"$cond": [
"$eq": [ "$month": "$date" , month ] ,
"$$KEEP",
"$$PRUNE"
]
])
????
day = 17
db.mydatabase.mycollection.aggregate([
"$redact":
"$cond": [
"$eq": [ "$dayOfMonth": "$date" , day ] ,
"$$KEEP",
"$$PRUNE"
]
])
?? OR
month = 11
day = 17
db.mydatabase.mycollection.aggregate([
"$redact":
"$cond": [
"$or": [
"$eq": [ "$month": "$date" , month ] ,
"$eq": [ "$dayOfMonth": "$date" , day ]
]
,
"$$KEEP",
"$$PRUNE"
]
])
???
var month = 11,
day = 17;
db.collection.aggregate([
"$redact":
"$cond": [
"$and": [
"$eq": [ "$month": "$createdAt" , month ] ,
"$eq": [ "$dayOfMonth": "$createdAt" , day ]
]
,
"$$KEEP",
"$$PRUNE"
]
])
$redact ?????? $project ? $match ?????,???????????????$$KEEP ??? $$PRUNE ???????????????
????:
以上是关于在日期时间的月、日、年...上查询 Mongodb的主要内容，如果未能解决你的问题，请参考以下文章