What is the MongoDB Aggregation Framework?
An example of an AI chatbot conversation about the MongoDB Aggregation Framework.
What is the MongoDB Aggregation Framework?
The MongoDB Aggregation Framework is a powerful tool for processing and transforming data in MongoDB. It allows you to perform operations like filtering, grouping, and sorting data.
Can you give me an example of how to use it?
Sure! For instance, if you have a collection of sales data, you can use the aggregation framework to group sales by product and calculate the total sales for each product.
What are some common stages in the aggregation pipeline?
Common stages include $match for filtering, $group for grouping data, and $sort for sorting results. Each stage transforms the data as it passes through.
Is it possible to perform joins with the aggregation framework?
Yes, you can use the $lookup stage to perform left outer joins between collections in the aggregation framework.
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