The performance of a critical SQL query in your application is degrading under heavy loads. What steps can you take to optimize this query for better performance?
- Adding more database replicas
- Increasing database server memory
- Indexing relevant columns
- Optimizing network bandwidth
Indexing relevant columns in the database tables can significantly improve the performance of SQL queries, especially those involving frequent data retrieval operations. By creating indexes on columns frequently used in search conditions or join operations, the database engine can locate and retrieve data more efficiently, resulting in faster query execution times.
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