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公式動画&関連する動画 [MongoDB Aggregation Framework Explained in 2 Minutes | A Beginner's Guide]
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Ever needed to analyze, transform, or group your data directly inside MongoDB? The Aggregation Framework is the tool for you. In this video, Ricardo breaks down one of MongoDB's most powerful features, the aggregation pipeline.
You'll learn how the framework operates as a sequence of stages , much like Java streams, to process your data. We'll cover key stages, including:
$match: How to filter documents, similar to a WHERE clause in SQL
$count: A simple way to count the documents that pass through the pipeline.
$group: How to group documents by a specific field and perform calculations like sum or average.
00:00:00 Intro
00:00:06 What is the Aggregation Framework?
00:00:17 What is an Aggregation Pipeline?
00:00:22 Analogy: Java Streams
00:00:53 How Aggregation Pipelines Work
00:01:15 Stage Example: $match
00:01:39 Stage Example: $count
00:01:58 Stage Example: $group
00:02:18 Conclusion & Next Steps
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