How can I improve SQL query performance?
There are several ways to improve SQL query performance, such as indexing, optimizing queries, and analyzing execution plans.
What are the best practices for indexing?
Best practices for indexing include using indexes on columns that are frequently used in WHERE clauses, avoiding excessive indexing, and regularly monitoring index usage.
How do I analyze an execution plan?
You can analyze an execution plan by using tools like SQL Server Management Studio or EXPLAIN in MySQL to see how your query is executed.
Can you give me an example of a poorly performing query?
Sure! A poorly performing query might use a SELECT * statement without any WHERE clause, retrieving unnecessary data.
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