Module lineage 

Column Lineage Tracking

This module provides functionality to track column lineage through SQL queries, building a graph of how columns flow from source tables to the result set. Supports UNION/INTERSECT/EXCEPT, CTEs, derived tables, subqueries, and star expansion.

Structs

LineageNode

A node in the column lineage graph

LineageWalker

Iterator for walking the lineage graph

Functions

collect_source_tables

Recursively collect source table names from lineage graph

get_source_tables

Get all source tables from a lineage graph

lineage

Build the lineage graph for a column in a SQL query