The view column_udt_usage identifies all columns
that use data types owned by the current user. Note that in
PostgreSQL, built-in data types behave
like user-defined types, so they are included here as well. See
also Section 31.9 for details.
Table 31-6. column_udt_usage Columns
Name
Data Type
Description
udt_catalog
sql_identifier
Name of the database that the column data type (the underlying
type of the domain, if applicable) is defined in (always the
current database)
udt_schema
sql_identifier
Name of the schema that the column data type (the underlying
type of the domain, if applicable) is defined in
udt_name
sql_identifier
Name of the column data type (the underlying type of the
domain, if applicable)
table_catalog
sql_identifier
Name of the database containing the table (always the current database)