| domain_catalog | sql_identifier | Name of the database that contains the domain (always the current database) |
| domain_schema | sql_identifier | Name of the schema that contains the domain |
| domain_name | sql_identifier | Name of the domain |
| data_type | character_data | Data type of the domain, if it is a built-in type, or
ARRAY if it is some array (in that case, see
the view element_types), else
USER-DEFINED (in that case, the type is
identified in udt_name and associated
columns).
|
| character_maximum_length | cardinal_number | If the domain has a character or bit string type, the declared
maximum length; null for all other data types or if no maximum
length was declared.
|
| character_octet_length | cardinal_number | If the domain has a character type, the maximum possible length
in octets (bytes) of a datum (this should not be of concern to
PostgreSQL users); null for all
other data types.
|
| 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 | If the domain has a numeric type, this column contains the
(declared or implicit) precision of the type for this column.
The precision indicates the number of significant digits. It
may be expressed in decimal (base 10) or binary (base 2) terms,
as specified in the column
numeric_precision_radix. For all other data
types, this column is null.
|
| numeric_precision_radix | cardinal_number | If the domain has a numeric type, this column indicates in
which base the values in the columns
numeric_precision and
numeric_scale are expressed. The value is
either 2 or 10. For all other data types, this column is null.
|
| numeric_scale | cardinal_number | If the domain has an exact numeric type, this column contains
the (declared or implicit) scale of the type for this column.
The scale indicates the number of significant digits to the
right of the decimal point. It may be expressed in decimal
(base 10) or binary (base 2) terms, as specified in the column
numeric_precision_radix. For all other data
types, this column is null.
|
| datetime_precision | cardinal_number | If the domain has a date, time, or interval type, the declared
precision; null for all other data types or if no precision was
declared.
|
| interval_type | character_data | Not yet implemented |
| interval_precision | character_data | Not yet implemented |
| domain_default | character_data | Default expression of the domain |
| udt_catalog | sql_identifier | Name of the database that the domain data type is defined in (always the current database) |
| udt_schema | sql_identifier | Name of the schema that the domain data type is defined in |
| udt_name | sql_identifier | Name of the domain data type |
| scope_catalog | sql_identifier | Applies to a feature not available in PostgreSQL |
| scope_schema | sql_identifier | Applies to a feature not available in PostgreSQL |
| scope_name | sql_identifier | Applies to a feature not available in PostgreSQL |
| maximum_cardinality | cardinal_number | Always null, because arrays always have unlimited maximum cardinality in PostgreSQL |
| dtd_identifier | sql_identifier | An identifier of the data type descriptor of the domain, unique
among the data type descriptors pertaining to the domain (which
is trivial, because a domain only contains one data type
descriptor). This is mainly useful for joining with other
instances of such identifiers. (The specific format of the
identifier is not defined and not guaranteed to remain the same
in future versions.)
|