routine_table_usage
   The view routine_table_usage is meant to identify all
   tables that are used by a function or procedure.  This information is
   currently not tracked by PostgreSQL.
  
Table 37.42. routine_table_usage Columns
| Column Type Description | 
|---|
| 
        Name of the database containing the function (always the current database) | 
| 
        Name of the schema containing the function | 
| 
        The “specific name” of the function. See Section 37.45 for more information. | 
| 
        Name of the database containing the function (always the current database) | 
| 
        Name of the schema containing the function | 
| 
        Name of the function (might be duplicated in case of overloading) | 
| 
        Name of the database that contains the table that is used by the function (always the current database) | 
| 
        Name of the schema that contains the table that is used by the function | 
| 
        Name of the table that is used by the function |