createIndex()
Reference group: Indexes and aggregation
What it does
Creates an index with key order and options.
Syntax
db.collection.createIndex(keys, options)
Use case
Support frequent filters and sorts.
createIndex(): practical example
db.orders.createIndex({ customerId: 1, createdAt: -1 })💡 Explanation
Creates an index with key order and options.
When to use it
Support frequent filters and sorts.
Key Takeaways
- Creates an index with key order and options.
- Typical use: Support frequent filters and sorts.