Relationship# class sdm.relational.Relationship(left_table: str, left_columns: tuple[str, ...], right_table: str, right_columns: tuple[str, ...])# Bases: object Join relationship between two tables. Parameters: left_table (str) – Name of the left table. left_columns (tuple[str, ...]) – Column names from the left table. right_table (str) – Name of the right table. right_columns (tuple[str, ...]) – Column names from the right table. classmethod from_mapping(mapping: Mapping[str, str | Sequence[str]]) → Self# Create a Relationship from a mapping. Parameters: mapping (Mapping[str, str | Sequence[str]]) – The mapping with "left_table", "left_columns", "right_table", "right_columns" entries. Return type: Self
