38.56. user_defined_types

The view user_defined_types currently contains all composite types defined in the current database. Only those types are shown that the current user has access to (by way of being the owner or having some privilege).

SQL knows about two kinds of user-defined types: structured types (also known as composite types in Postgres Pro) and distinct types (not implemented in Postgres Pro). To be future-proof, use the column user_defined_type_category to differentiate between these. Other user-defined types such as base types and enums, which are Postgres Pro extensions, are not shown here. For domains, see Section 38.23 instead.

Table 38.54. user_defined_types Columns

Column Type

Description

user_defined_type_catalog sql_identifier

Name of the database that contains the type (always the current database)

user_defined_type_schema sql_identifier

Name of the schema that contains the type

user_defined_type_name sql_identifier

Name of the type

user_defined_type_category character_data

Currently always STRUCTURED

is_instantiable yes_or_no

Applies to a feature not available in Postgres Pro

is_final yes_or_no

Applies to a feature not available in Postgres Pro

ordering_form character_data

Applies to a feature not available in Postgres Pro

ordering_category character_data

Applies to a feature not available in Postgres Pro

ordering_routine_catalog sql_identifier

Applies to a feature not available in Postgres Pro

ordering_routine_schema sql_identifier

Applies to a feature not available in Postgres Pro

ordering_routine_name sql_identifier

Applies to a feature not available in Postgres Pro

reference_type character_data

Applies to a feature not available in Postgres Pro

data_type character_data

Applies to a feature not available in Postgres Pro

character_maximum_length cardinal_number

Applies to a feature not available in Postgres Pro

character_octet_length cardinal_number

Applies to a feature not available in Postgres Pro

character_set_catalog sql_identifier

Applies to a feature not available in Postgres Pro

character_set_schema sql_identifier

Applies to a feature not available in Postgres Pro

character_set_name sql_identifier

Applies to a feature not available in Postgres Pro

collation_catalog sql_identifier

Applies to a feature not available in Postgres Pro

collation_schema sql_identifier

Applies to a feature not available in Postgres Pro

collation_name sql_identifier

Applies to a feature not available in Postgres Pro

numeric_precision cardinal_number

Applies to a feature not available in Postgres Pro

numeric_precision_radix cardinal_number

Applies to a feature not available in Postgres Pro

numeric_scale cardinal_number

Applies to a feature not available in Postgres Pro

datetime_precision cardinal_number

Applies to a feature not available in Postgres Pro

interval_type character_data

Applies to a feature not available in Postgres Pro

interval_precision cardinal_number

Applies to a feature not available in Postgres Pro

source_dtd_identifier sql_identifier

Applies to a feature not available in Postgres Pro

ref_dtd_identifier sql_identifier

Applies to a feature not available in Postgres Pro