How to query by datetime in Doctrine MongoDB ODM?
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I could use some help on this problem. I'm creating an application using Symfony2 + mongodb + doctrine. I just want to use Doctrine ODM to query all the users who have been logged in the last 5 minutes. I have a User collection with a date field called date_last_login. So I try to use the querybuilder like that: <?php // Creating a DateTime object and susbtract 5 min from now // local time is 15:40:05, timezone: 'Europe/Paris' $_dateTime = new \DateTime(); $_interval5Min = new \DateInterval...
Answer:
This is likely due to this PHP bug which was fixed in 5.3.3: https://bugs.php.net/bug.php?id=50916
JuCachalot at Stack Overflow Mark as irrelevant Undo
Other solutions
In Spring mvc + mongodb application, I have 4 lakh documents. Assuming if I need to return 3 lakh documents when a query is made, how can I do that? Following is the stack trace, HTTP Status 500 - Request processing failed; nested exception is java.lang...
Answer:
You don't. The problem here is not some configuration setting, it's a technical misunderstanding. 2GB...
Gaëtan Voyer-Perrault at Quora Mark as irrelevant Undo
In some data mining scenarios, I have a MongoDB collection whose records are heterogenous (i.e. they can have different keys). I often query for "which records have a field with a given key", as in db.coll.find({"fieldname":{$exists...
Answer:
In MongoDB 1.8 $exists doesn't use indexes. In 1.9 it does[1]. 1.9 is the unstable development release...
David Mytton at Quora Mark as irrelevant Undo
In at least Ruby and Python implementation of MongoDB driver you use nearly identical syntax for commands that are used in Mongo shell which are compact and natural. Why in PHP driver everything is polluted with array() ?
Answer:
A object in javascript is effectively a hashtable. PHP does not support a true hashtable or dictionary...
Gaëtan Voyer-Perrault at Quora Mark as irrelevant Undo
{ "_id" : "4f316a0e29d7f51720b03251", "totalTime" : 1717000, "totalDistance" : 13246.551, "segments" : [ { "totalTime" : 1717000, "totalDistance...
Answer:
You might consider using GeoJSON to define your waypoints. You can use a LineString GeoJSON encoding...
Jared Rosoff at Quora Mark as irrelevant Undo
Can the following sql query be done as a mongo query? (this would solve a big problem for me) select * from ( select attribute1, '100' from collection where attribute2 = 1 union select attribute1, '200' from collection where attribute2 = 2 ) where...
Answer:
Something like this? db.collection.find({$or: [ {attribute2: 1}, {attribute2: 2}]}).sort({attribute...
Harry Heymann at Quora Mark as irrelevant Undo
I understand how HBase does partitioning (basically range partition on row key. And row key is sorted). I see MongoDB also does range partitioning, but key is not sorted. Then how does it work? Can anyone help to understand internals?
Answer:
> How does MongoDB shard data? This is potentially a very complicated question as sharding has lots...
Gaëtan Voyer-Perrault at Quora Mark as irrelevant Undo
In mongodb javascript, i can use find({'datetime': {'$gt': '2011-04-01', '$lt': '2011-04-09'}}) to do range query, but can i do it in mongoose's find? Thanks
Answer:
First, in the Schema, you need to define the type of the date field to be: {date: { type: Date, default...
Razmig Youssef at Quora Mark as irrelevant Undo
In SQL, you can select many fields and perform basic arithmetic on them, by creating a query such as "SELECT ((field1 + field2)/2) as relevance, title, author from..."
Answer:
It's very easy: just download SlamData, an open source project that lets you run SQL on MongoDB, and...
John A. De Goes at Quora Mark as irrelevant Undo
There are two fields in one collection "max" and "min". I have two integers X and y. I want to perform a query like this on the collection; find all the rows whose 'min'-y <= X <='max'+y. How can i do that [updated] in pymongo...
Answer:
It is possible to pass the exact query( 'min'-y <= X <='max'+y) in javascript as suggested by...
Answer Wiki at Quora Mark as irrelevant Undo
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