How can I analyze execution plans in SQL?
An example of an AI chatbot conversation about analyzing execution plans in SQL.
How can I analyze execution plans in SQL?
To analyze execution plans in SQL, you can use the EXPLAIN command to see how your queries are executed.
What should I look for in the execution plan?
Look for key metrics like the estimated cost, number of rows, and the type of joins used. These can indicate performance issues.
How do I interpret the estimated cost?
The estimated cost represents the resource usage for the query. Lower costs generally indicate better performance.
Can you give me an example of a bad execution plan?
Sure! A bad execution plan might show a full table scan instead of an index seek, which can significantly slow down performance.
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