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Junior — Middle

Milliseid tööriistu kasutasite SQL-päringute jõudluse analüüsimiseks?

sobes.tech AI

Vastus AI-lt

To analyze SQL query performance, I often use the following tools:

  • EXPLAIN / EXPLAIN ANALYZE — allows you to see the execution plan of a query, understand which indexes are used, and where full table scans occur.
  • pg_stat_statements (for PostgreSQL) — collects statistics on query execution, helps identify the 'heaviest' queries.
  • Database profilers — for example, SQL Server Profiler, MySQL Performance Schema.
  • Built-in monitoring tools in the DBMS, such as Query Store in SQL Server.
  • External tools: pgBadger, Percona Toolkit, which analyze logs and provide performance reports.

In Go projects, you can also log query durations and metrics using Prometheus for real-time monitoring.