Snowflake Working with Joins Documentation (2026)
Official Snowflake documentation for SQL join patterns.
Key facts surfaced (2026-05-19):
- Inner joins establish definitive matches between entities; left outer joins preserve all rows from the primary table.
- Natural joins automatically match identically-named columns across datasets.
- Curriculum reference: composable CDP equivalent of AEP Identity Map for identity stitching — JOIN queries across email, phone, cookie ID columns (Module 3).