35.16. column_udt_usage #
 The view column_udt_usage identifies all columns that use data types owned by a currently enabled role. Note that in PostgreSQL, built-in data types behave like user-defined types, so they are included here as well. See also Section 35.17 for details. 
Table 35.14. column_udt_usage Columns
| Column Type Description | 
|---|
| 
 Name of the database that the column data type (the underlying type of the domain, if applicable) is defined in (always the current database) | 
| 
 Name of the schema that the column data type (the underlying type of the domain, if applicable) is defined in | 
| 
 Name of the column data type (the underlying type of the domain, if applicable) | 
| 
 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 column |