36.40. routine_column_usage
 The view routine_column_usage identifies all columns that are used by a function or procedure, either in the SQL body or in parameter default expressions. (This only works for unquoted SQL bodies, not quoted bodies or functions in other languages.) A column is only included if its table is owned by a currently enabled role. 
Table 36.38. routine_column_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 36.45 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  | 
 Name of the column that is used by the function  |