What is the EXPLAIN statement in MySQL?
The EXPLAIN statement in MySQL is used to obtain information about how MySQL executes a query. It provides insights into the query execution plan.
How can I use EXPLAIN to optimize my queries?
You can use EXPLAIN to analyze the execution plan of your queries, identify bottlenecks, and make adjustments like adding indexes or rewriting queries.
Can you show me an example of using EXPLAIN?
Sure! For example, you can run EXPLAIN SELECT * FROM users WHERE age > 30;
to see how MySQL processes that query.
What are the different types of output I can expect from EXPLAIN?
The output includes columns like 'id', 'select_type', 'table', 'type', 'possible_keys', and 'key', which provide details about the query execution.
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