Skill Topic · Cinematic

📘 MongoDB — Query Operators (Deep Dive)

Har operator detail me — comparison, logical, element, evaluation, array! 🔬

Topic 1

📌 1. Comparison Operators Summary

🧠 `javascript // ═══ All comparison operators ═══ // $eq — Equal db.users.find({ age: 28 })…

Topic 2

🔗 `javascript // ═══ $and — All conditions must match ═══ // Implicit (most common):…

Topic 3

⚡ `javascript // ═══ $exists — Check if field exists ═══ // Field exists: db.users.find({…

Topic 4

📊 `javascript // ═══ $regex — Regular expression ═══ db.users.find({ name: { $regex:…

Topic 5

💡 `javascript // ═══ $all — Must contain ALL specified elements ═══ db.users.find({ skills:…

Topic 6

🎯 `javascript // ═══ $bitsAllSet — All specified bits are 1 ═══ db.users.find({…

Topic 7

🔮 `javascript // ═══ $near — Find nearby (requires 2dsphere index) ═══…

Topic 8

🌐 `javascript // ═══ Complex real-world queries ═══ // 1. E-commerce: Find products on…

Topic 9

🧠 KEY POINTS: - Comparison: $eq, $ne, $gt/$gte, $lt/$lte, $in, $nin - Logical: $and…

Quick Quiz

📘 MongoDB — Query Operators (Deep Dive) ka sabse sahi definition kya hai?

Complete! 🎉

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