column_column_usage
   The view column_column_usage identifies all generated
   columns that depend on another base column in the same table.  Only tables
   owned by a currently enabled role are included.
  
Table 37.10. column_column_usage Columns
| Column Type Description | 
|---|
| 
        Name of the database containing the table (always the current database) | 
| 
        Name of the schema containing the table | 
| 
        Name of the table | 
| 
        Name of the base column that a generated column depends on | 
| 
        Name of the generated column |