my team migrate data to mongodb atlas.
I have a question.
How can i combine $searchbeta and geo search in mongodb atlas.
The $search (or $searchBeta) stage now supports geospatial queries.
Your field that contains geospatial data must be mapped to geo type. Then there are a few possible ways to query that data: near, geoWithin and geoShape.
Related
I have two collections, that are store on Atlas.
I want to be able to search for a text, using the regex operator of Mongo Atlas Search on these two collections, but with only one aggregation.
These two collections have nothing in common, so I can't do a $lookup on it.
I need to do this search in one aggregation because the result of this aggregation must be paginated with $limit and $skip in the aggregation.
How to perform that ?
You can use Atlas Data Lake on top of these two collections to federate queries across both. To do this you would create a Data Lake, create a virtual collection in your Data Lake, and then have both of these collections listed as "datasources" for that virtual collection.
The Data Lake infrastructure will push down queries to the underlying cluster and union the results before returning them to the client application.
In this example there are multiple types of data sources, but you can just list multiple cluster collections.
https://docs.mongodb.com/datalake/reference/format/data-lake-configuration/#example-configuration-for-running-federated-queries
We're in phase of shifting older mongodb docs to aws S3. S3 supports JSON documents to store (reference1). Also it does allow basic querying through SQL-like language (reference2). We're thinking about using Athena for querying which also uses SQL-like query language. Is there way for querying JSON documents with mongodb aggregation pipeline?
You can query JSON documents stored in S3 using the aggregation pipeline using MongoDB Atlas Datalake.
We have an api biuld with mongodb as database. As the data is huge, we indexed all data in elastic search, so how can we convert mongodb query to elasticsearch query? Are there any plugins vailable? Please sugest
If you created a textIndex on mongodb 2.6 when you find or use the pipeline aggregate framework you can get the textScore given a query with the projection:
{'$meta': "textScore"}
This allows to operate with the textScore in further operations.
Is it possible to acces such value during a map-reduce operation?
I want to create a database using mongoDb and I am new to this area. And also want to Insert and select data to store shapes like circle, triangle, etc. I want to know how to do it.
Assuming you are referring to storing shapes for geospatial queries, you can use the new support for GeoJSON objects in MongoDB 2.4 to store and query Point, LineString, and Polygon objects.
For more information see:
MongoDB 2.4 manual: Geospatial Indexes and Queries and Geospatial Query Compatibility Chart
The GeoJSON 1.0 spec