Time range query in Mongodbe using pimongo
You need to run a query against the mongodb database, resulting in a result set over a time range. I am using pimongo. My request looks like this:
query = {"$and": [
{"id_node": id_node}
{"port": port},
{"datetime": {"$gte": self.hourBegin}}
{"datetime": {"$lte": self.now}}
]}
listResults = db.mycollection.find (query)
I've also tried like this:
query = {"id_node": int(id_node)
"port": port,
"datetime": {"$gte": self.hourBegin, "$lte": self.now}}
listResults = db.mycollection.find (query)
But the result is always empty. Tested directly in mongodb but the result is empty. I am sure the data exists in the database with a time range that I am researching.
List of possible results:
{ "_id" : ObjectId("543618c6e7b9914c35266128"), "lab" : "2", "port" : "A1", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:04Z"), "valor" : "22.00", "sensor" : "2" }
{ "_id" : ObjectId("543618c6e7b9914c35266129"), "lab" : "2", "port" : "A0", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:04Z"), "valor" : "0", "sensor" : "1" }
{ "_id" : ObjectId("543618c6e7b9914c3526612c"), "lab" : "2", "port" : "A1", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:06Z"), "valor" : "22.00", "sensor" : "2" }
{ "_id" : ObjectId("543618c6e7b9914c3526612d"), "lab" : "2", "port" : "A0", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:06Z"), "valor" : "0", "sensor" : "1" }
{ "_id" : ObjectId("543618c7e7b9914c35266130"), "lab" : "2", "port" : "A1", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:08Z"), "valor" : "22.00", "sensor" : "2" }
{ "_id" : ObjectId("543618c7e7b9914c35266131"), "lab" : "2", "port" : "A0", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:08Z"), "valor" : "0", "sensor" : "1" }
{ "_id" : ObjectId("543618c7e7b9914c35266134"), "lab" : "2", "port" : "A1", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:10Z"), "valor" : "22.00", "sensor" : "2" }
{ "_id" : ObjectId("543618c7e7b9914c35266135"), "lab" : "2", "port" : "A0", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:10Z"), "valor" : "0", "sensor" : "1" }
{ "_id" : ObjectId("543618c7e7b9914c35266138"), "lab" : "2", "port" : "A1", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:12Z"), "valor" : "22.00", "sensor" : "2" }
{ "_id" : ObjectId("543618c7e7b9914c35266139"), "lab" : "2", "port" : "A0", "id_node" : 1, "datetime" : ISODate("2014-09-26T18:28:12Z"), "valor" : "0", "sensor" : "1" }
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1 answer
I find http://www.querymongo.com/ and then created a query as if it were in MySQL and then had to return one mongodb query. eg:
#MySQL Query
SELECT * FROM inoshare WHERE id_nome = 1 AND port = 1 AND datetime > 'hourBegin' AND datetime <= 'NOW()';
And return:
db.inoshare.find({
"id_nome": 1,
"port": 1,
"datetime": {
"$gt": "hourBegin",
"$lte": "NOW()"
}
});
Then replace "hourBegin" and "NOW ()" for variables. Thanks for all.
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