What is the EXPLAIN command in PostgreSQL?
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What is the EXPLAIN command in PostgreSQL?
The EXPLAIN command in PostgreSQL is used to display the execution plan of a query. It helps you understand how PostgreSQL will execute your SQL statements.
How can I use EXPLAIN to optimize my queries?
You can use EXPLAIN to analyze the execution plan of your queries. Look for operations that take a long time or use a lot of resources, and consider adding indexes or rewriting the query.
Can I see the actual execution time with EXPLAIN?
Yes, you can use EXPLAIN ANALYZE to see the actual execution time along with the execution plan. This provides more detailed insights into query performance.
What are the different formats available for EXPLAIN output?
EXPLAIN can output results in several formats, including text, XML, JSON, and YAML. You can specify the format using the FORMAT option.
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