What method would you use to optimize this query? You can choose any method you want, such as adding indexes or rewriting the query.

To optimize a SQL query, first examine the execution plan with EXPLAIN to identify bottlenecks. Common strategies include:

1. Indexes: Add indexes on columns used in JOIN, WHERE, and ORDER BY clauses. A covering index can eliminate lookups.
2. Query rewrite: Replace subqueries with JOINs or use EXISTS instead of IN when appropriate.
3. Select only needed columns: Avoid SELECT * to reduce I/O.
4. Filter early: Apply WHERE conditions as early as possible to reduce row counts.
5. Use proper join types: Prefer INNER JOIN over LEFT JOIN when you don't need unmatched rows.
6. Partitioning: For very large tables, partition by date or other high‑cardinality columns.
7. Analyze statistics: Ensure the query planner has up‑to‑date statistics.

By combining these techniques, you can reduce execution time from seconds to milliseconds in many cases.