Advanced Topics

• Subclassing schemas
• Defining your own ColumnMeta attributes
• Dealing with column ambiguity
  • The basics
  • Ambiguous columns and transform_to_schema()
  • Self-joins
• Advanced usage of type hints
  • Functions that do not affect the schema
  • Functions applied to two DataSets of the same schema
  • Transformations
  • Did we miss anything?
• Transformations for all schemas with a given column using DataSetImplements