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Skill Topic ยท Cinematic

๐Ÿ“˜ MongoDB โ€” Advanced Aggregation

Aggregation ke advanced operators โ€” window, facet, graphs aur zyada! ๐Ÿ”ฌ

Topic 1
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

๐Ÿ“Œ 1. $facet โ€” Multiple Pipelines Ek Saath

๐Ÿ“š `javascript // โ•โ•โ• Parallel pipelines on same data โ•โ•โ• db.products.aggregate([ { $facet:โ€ฆ
Topic 2
๐Ÿ’ก ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 2. $bucket & $bucketAuto

๐Ÿ’ก `javascript // โ•โ•โ• $bucket โ€” Manual ranges โ•โ•โ• db.users.aggregate([ { $bucket: { groupBy:โ€ฆ
Topic 3
๐Ÿ”’

๐Ÿ“Œ 3. $graphLookup โ€” Recursive/Tree Queries

๐ŸŽฏ `javascript // โ•โ•โ• Hierarchical data traverse karo โ•โ•โ• // employees collection (orgโ€ฆ
Topic 4
โญ

๐Ÿ“Œ 4. $setWindowFields (MongoDB 5.0+)

โญ `javascript // โ•โ•โ• Window functions! (SQL OVER/PARTITION BY jaisa) โ•โ•โ• // Running total:โ€ฆ
Topic 5
๐Ÿ“ฅ ๐Ÿ“ฅ ๐Ÿง  ๐Ÿ”ฌ ๐Ÿ’ก ๐ŸŽฏ

๐Ÿ“Œ 5. Expression Operators (Deep Dive)

๐Ÿ”‘ String Operators `javascript db.users.aggregate([ { $project: { fullName: { $concat:โ€ฆ
Topic 6
โœจ ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 6. $replaceRoot / $replaceWith

โœจ `javascript // โ•โ•โ• Document ko kisi embedded field se replace karo โ•โ•โ•โ€ฆ
Topic 7
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

๐Ÿ“Œ 7. $unionWith โ€” UNION ALL

๐ŸŒŸ `javascript // โ•โ•โ• Multiple collections combine karo โ•โ•โ• db.sales2023.aggregate([ {โ€ฆ
Topic 8
๐Ÿš€

๐Ÿ“Œ 8. $densify (MongoDB 5.1+)

๐Ÿš€ `javascript // โ•โ•โ• Missing values fill karo (time series gaps) โ•โ•โ•โ€ฆ
Topic 9
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

๐Ÿ“Œ 9. $fill (MongoDB 5.3+)

๐Ÿ“š `javascript // โ•โ•โ• Missing values fill karo โ•โ•โ• db.stocks.aggregate([ { $sort: { date: 1โ€ฆ
Topic 10
๐Ÿ’ก ๐Ÿ“Š ๐Ÿ”ฌ

๐Ÿ“Œ 10. $sample โ€” Random Documents

๐Ÿ’ก `javascript // โ•โ•โ• Random N documents โ•โ•โ• db.products.aggregate([ { $sample: { size: 5 }โ€ฆ
Topic 11
๐Ÿ”’

๐Ÿ“Œ 11. $redact โ€” Access Control

๐ŸŽฏ `javascript // โ•โ•โ• Document-level access control โ•โ•โ• db.documents.aggregate([ { $redact:โ€ฆ
Topic 12
โญ

๐Ÿ“Œ 12. Complete Analytics Example

โญ `javascript // โ•โ•โ• User retention analysis (cohort) โ•โ•โ• db.events.aggregate([ // Activeโ€ฆ
Topic 13
๐Ÿ“ฅ โš™๏ธ ๐Ÿ”ฌ ๐Ÿ’ก

โœ… Summary

๐Ÿ”‘ KEY POINTS: - $facet = multiple pipelines parallel (faceted search!) -โ€ฆ
Quick Quiz
๐Ÿง  QUIZ TIME

Quiz โ€” Question 1

๐Ÿ“˜ MongoDB โ€” Advanced Aggregation ka sabse sahi definition kya hai?

Complete! ๐ŸŽ‰
COMPLETE

๐Ÿ“˜ MongoDB โ€” Advanced Aggregation Complete!

Aliens School ยท HIEN ยท Cinematic Knowledge

โœ…

๐Ÿ“˜ MongoDB โ€” Advanced Aggregation Complete

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