How can I use EXPLAIN PLAN in SQL?
An example of an AI chatbot conversation about using EXPLAIN PLAN in SQL for query optimization.
What is the purpose of using EXPLAIN PLAN in SQL?
EXPLAIN PLAN is used to display the execution plan of a SQL query, helping you understand how the database will execute it.
How can I interpret the output of EXPLAIN PLAN?
The output shows the steps the database will take, including the order of operations and the estimated cost of each step.
Can you give me an example of using EXPLAIN PLAN?
Sure! You can run EXPLAIN PLAN FOR SELECT * FROM employees; to see how the query will be executed.
What are some common issues that EXPLAIN PLAN can help identify?
It can help identify full table scans, missing indexes, and inefficient join operations that may slow down your queries.
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