MongoDB Atlas aggregation queries using `$lookup` to join `comments`, `movies`, and `users` collections. Tasks include retrieving fully joined comment data and re-implementing a global average viewer rating filter without `$setWindowFields`.

Fast, safety-focused tool for combining text lists and structured data into products, permutations, combinations, zipped records, and joins. Supports CSV, TSV, JSONL, templates, filters, limits, sharding, CLI, GUI, and TUI workflows.