Big points:

• Added a new algorithm for in-db diffing that uses OUTER JOIN, called "joindiff".
  • Much faster than the original "hashdiff" algorithm!
  • Automatically chosen if both dbs are the same
  • Validates that the key column is unique and contains no NULLs (joindiff only)
  • Explicitly switch between algorithms using the --algorithm parameter.
• New feature to materialize joindiff results to DB
• New feature that diffs the schemas when both dbs are the same
• Added DuckDB support (thanks @jardayn!)
• Better support for alphanumerics
• Better support for boolean types
• Added --version switch
• New and improved database and query interface, named "sqeleton"
• Tons of bugfixes and improvements!

Read the full release here: https://github.com/datafold/data-diff/releases/tag/v0.3.0