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 PostgreSQL) and distinct types (not
implemented in PostgreSQL). 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 PostgreSQL
extensions, are not shown here. For domains,
see Section 37.22 instead.
Table 37.56. user_defined_types Columns
| Name | Data 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 PostgreSQL |
is_final | yes_or_no | Applies to a feature not available in PostgreSQL |
ordering_form | character_data | Applies to a feature not available in PostgreSQL |
ordering_category | character_data | Applies to a feature not available in PostgreSQL |
ordering_routine_catalog | sql_identifier | Applies to a feature not available in PostgreSQL |
ordering_routine_schema | sql_identifier | Applies to a feature not available in PostgreSQL |
ordering_routine_name | sql_identifier | Applies to a feature not available in PostgreSQL |
reference_type | character_data | Applies to a feature not available in PostgreSQL |
data_type | character_data | Applies to a feature not available in PostgreSQL |
character_maximum_length | cardinal_number | Applies to a feature not available in PostgreSQL |
character_octet_length | cardinal_number | Applies to a feature not available in PostgreSQL |
character_set_catalog | sql_identifier | Applies to a feature not available in PostgreSQL |
character_set_schema | sql_identifier | Applies to a feature not available in PostgreSQL |
character_set_name | sql_identifier | Applies to a feature not available in PostgreSQL |
collation_catalog | sql_identifier | Applies to a feature not available in PostgreSQL |
collation_schema | sql_identifier | Applies to a feature not available in PostgreSQL |
collation_name | sql_identifier | Applies to a feature not available in PostgreSQL |
numeric_precision | cardinal_number | Applies to a feature not available in PostgreSQL |
numeric_precision_radix | cardinal_number | Applies to a feature not available in PostgreSQL |
numeric_scale | cardinal_number | Applies to a feature not available in PostgreSQL |
datetime_precision | cardinal_number | Applies to a feature not available in PostgreSQL |
interval_type | character_data | Applies to a feature not available in PostgreSQL |
interval_precision | cardinal_number | Applies to a feature not available in PostgreSQL |
source_dtd_identifier | sql_identifier | Applies to a feature not available in PostgreSQL |
ref_dtd_identifier | sql_identifier | Applies to a feature not available in PostgreSQL |