Junior — Middle
What aspects should be considered when analyzing the results of EXPLAIN ANALYZE?
sobes.tech AI
Answer from AI
When analyzing the results of the EXPLAIN ANALYZE command, it is important to consider the following aspects:
- Query execution plan: what operations are performed (e.g., sequential scan, index scan, joins).
- Time taken for each operation: how long each part of the plan takes.
- Number of processed rows: how many rows were read and returned at each stage.
- Index usage: whether indexes are used to speed up the query.
- Parallelism: whether parallel processes are involved.
- Potential bottlenecks: operations with the longest time or the largest number of processed rows may be the cause of slowdown.
Based on this data, you can optimize the query, for example, by adding indexes, rewriting the query, or changing the data structure.