SQL

Status: 🌿

Motivation

Strengthen practical SQL fluency for analytics, application backends, and operational troubleshooting.

Connections

• Data
• Projects
• Data Modeling
• Languages
• Experiments

Starter Points

• Query shaping: joins, CTEs, window functions.
• Performance basics: indexing, execution plans, cardinality awareness.
• Data quality checks and migration-safe changes.

Field Notes (2026-02-13)

• SQL helped debug a production-adjacent issue even without introducing new query concepts.
• Running backup/import test queries for courses increased confidence in operational recovery flow.
• Practical takeaway: repeated operational exercises reinforce tool fluency and reduce incident response time.