35.58. user_defined_types
The viewuser_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 inPostgres Pro) and distinct types (not implemented inPostgres Pro). To be future-proof, use the columnuser_defined_type_category to differentiate between these. Other user-defined types such as base types and enums, which arePostgres Pro extensions, are not shown here. For domains, seeSection 35.22 instead.
Table 35.56. 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 alwaysSTRUCTURED |
is_instantiable | yes_or_no | Applies to a feature not available inPostgres Pro |
is_final | yes_or_no | Applies to a feature not available inPostgres Pro |
ordering_form | character_data | Applies to a feature not available inPostgres Pro |
ordering_category | character_data | Applies to a feature not available inPostgres Pro |
ordering_routine_catalog | sql_identifier | Applies to a feature not available inPostgres Pro |
ordering_routine_schema | sql_identifier | Applies to a feature not available inPostgres Pro |
ordering_routine_name | sql_identifier | Applies to a feature not available inPostgres Pro |
reference_type | character_data | Applies to a feature not available inPostgres Pro |
data_type | character_data | Applies to a feature not available inPostgres Pro |
character_maximum_length | cardinal_number | Applies to a feature not available inPostgres Pro |
character_octet_length | cardinal_number | Applies to a feature not available inPostgres Pro |
character_set_catalog | sql_identifier | Applies to a feature not available inPostgres Pro |
character_set_schema | sql_identifier | Applies to a feature not available inPostgres Pro |
character_set_name | sql_identifier | Applies to a feature not available inPostgres Pro |
collation_catalog | sql_identifier | Applies to a feature not available inPostgres Pro |
collation_schema | sql_identifier | Applies to a feature not available inPostgres Pro |
collation_name | sql_identifier | Applies to a feature not available inPostgres Pro |
numeric_precision | cardinal_number | Applies to a feature not available inPostgres Pro |
numeric_precision_radix | cardinal_number | Applies to a feature not available inPostgres Pro |
numeric_scale | cardinal_number | Applies to a feature not available inPostgres Pro |
datetime_precision | cardinal_number | Applies to a feature not available inPostgres Pro |
interval_type | character_data | Applies to a feature not available inPostgres Pro |
interval_precision | cardinal_number | Applies to a feature not available inPostgres Pro |
source_dtd_identifier | sql_identifier | Applies to a feature not available inPostgres Pro |
ref_dtd_identifier | sql_identifier | Applies to a feature not available inPostgres Pro |