Explain how you would optimize a slow-running SQL query.

  • Adding more data to the query for better results.
  • Using SELECT * to fetch all columns.
  • Indexing relevant columns and rewriting the query.
  • Reducing database table complexity and relationships.
Optimizing a slow-running SQL query involves several steps, including indexing relevant columns to speed up data retrieval, rewriting the query to use efficient joins and filters, and avoiding fetching unnecessary columns using SELECT *. Reducing the complexity of database tables and relationships can also contribute to query performance improvement. Optimization aims to reduce query execution time and enhance overall system performance.
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