📚 SQL Indexes
Indexes speed up data retrieval by creating quick lookup pointers in your database tables.
🔍 Why Use Indexes?
- Faster SELECT queries, especially on large tables
- Efficient sorting with ORDER BY
- Speed up JOIN operations
📖 Example: Creating an Index
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💡 Tip: While indexes speed up SELECTs, they can slow down INSERT, UPDATE, and DELETE operations because the index needs updating.