PostgreSQL - Performance Tuning
What is the primary purpose of the
pg_stat_statements extension in PostgreSQL?What is the primary purpose of the pg_stat_statements extension in PostgreSQL?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the role of pg_stat_statements
The extension collects statistics about query execution times and counts, helping identify slow queries.Step 2: Compare with other options
Options A, B, and D describe unrelated database functions like backup, permissions, and storage optimization.Final Answer:
To track and report query execution statistics including slow queries -> Option DQuick Check:
pg_stat_statements = track slow queries [OK]
Quick Trick: Remember: pg_stat_statements tracks query performance stats [OK]
Common Mistakes:
- Confusing pg_stat_statements with backup tools
- Thinking it manages user roles
- Assuming it optimizes disk space
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