#include "duckdb/planner/expression/bound_columnref_expression.hpp" #include "duckdb/planner/expression_iterator.hpp" #include "duckdb/planner/operator/logical ...
• Step B (Remove Duplicates): Since a person can logically only die once, we cannot have the same patient ID (MRD) showing up multiple times. We use a smart counting trick called a CTE to scan the ...