Utility Functions

analyze_join_keys(left_df, right_df[, on, ...])	Analyzes key relationship and coverage between two DataFrames.
find_inconsistent_mappings(df, key_column, ...)	Identifies rows where keys map to inconsistent value.
haversine_vectorized(lat1, lon1, lat2, lon2)	Calculate great-circle distances between geographic points using vectorized operations.