Applies period-specific column mappings to raw data.
Renames columns and adds NA columns for missing data.
Usage
normalize_column_names(df, mapping)
Arguments
- df
Data frame to normalize
- mapping
List. Column mapping dictionary, already resolved (e.g.
any period/year-specific overrides from `apply_column_overrides()`
applied) before this function is called
Value
Data frame with normalized column names in target order
Details
This function:
1. Renames raw columns to target names
2. Adds NA columns for missing data
3. Reorders to match target column order
