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).