Temporal Joins SQL Cheatsheet: 12 Patterns for Event Analytics

Stop rewriting temporal join logic from scratch. This cheatsheet gives you copy-paste SQL for all 12 patterns you'll ever need.

What's inside:

• 12 complete SQL patterns with generic templates and worked examples
• Fantasy RPG sample dataset (DuckDB) to practice immediately
• Dialect reference for BigQuery, Snowflake, and Redshift

Perfect for: Data engineers and analysts working with event streams who need point-in-time correct joins.

Companion to "Activity Schema: The Data Model That Fixed My QA Debugging" on kozlov.ski.