udt_catalogsql_identifier
Name of the database containing the data type (always the current database) |
udt_schemasql_identifier
Name of the schema containing the data type |
udt_namesql_identifier
Name of the data type |
attribute_namesql_identifier
Name of the attribute |
ordinal_positioncardinal_number
Ordinal position of the attribute within the data type (count starts at 1) |
attribute_defaultcharacter_data
Default expression of the attribute |
is_nullableyes_or_no
YES if the attribute is possibly nullable,NO if it is known not nullable.
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data_typecharacter_data
Data type of the attribute, if it is a built-in type, orARRAY if it is some array (in that case, see the viewelement_types), elseUSER-DEFINED (in that case, the type is identified inattribute_udt_name and associated columns). |
character_maximum_lengthcardinal_number
Ifdata_type identifies 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_lengthcardinal_number
Ifdata_type identifies a character type, the maximum possible length in octets (bytes) of a datum; null for all other data types. The maximum octet length depends on the declared character maximum length (see above) and the server encoding. |
character_set_catalogsql_identifier
Applies to a feature not available inPostgres Pro |
character_set_schemasql_identifier
Applies to a feature not available inPostgres Pro |
character_set_namesql_identifier
Applies to a feature not available inPostgres Pro |
collation_catalogsql_identifier
Name of the database containing the collation of the attribute (always the current database), null if default or the data type of the attribute is not collatable |
collation_schemasql_identifier
Name of the schema containing the collation of the attribute, null if default or the data type of the attribute is not collatable |
collation_namesql_identifier
Name of the collation of the attribute, null if default or the data type of the attribute is not collatable |
numeric_precisioncardinal_number
Ifdata_type identifies a numeric type, this column contains the (declared or implicit) precision of the type for this attribute. The precision indicates the number of significant digits. It can be expressed in decimal (base 10) or binary (base 2) terms, as specified in the columnnumeric_precision_radix. For all other data types, this column is null. |
numeric_precision_radixcardinal_number
Ifdata_type identifies a numeric type, this column indicates in which base the values in the columnsnumeric_precision andnumeric_scale are expressed. The value is either 2 or 10. For all other data types, this column is null. |
numeric_scalecardinal_number
Ifdata_type identifies an exact numeric type, this column contains the (declared or implicit) scale of the type for this attribute. The scale indicates the number of significant digits to the right of the decimal point. It can be expressed in decimal (base 10) or binary (base 2) terms, as specified in the columnnumeric_precision_radix. For all other data types, this column is null. |
datetime_precisioncardinal_number
Ifdata_type identifies a date, time, timestamp, or interval type, this column contains the (declared or implicit) fractional seconds precision of the type for this attribute, that is, the number of decimal digits maintained following the decimal point in the seconds value. For all other data types, this column is null. |
interval_typecharacter_data
Ifdata_type identifies an interval type, this column contains the specification which fields the intervals include for this attribute, e.g.,YEAR TO MONTH,DAY TO SECOND, etc. If no field restrictions were specified (that is, the interval accepts all fields), and for all other data types, this field is null. |
interval_precisioncardinal_number
Applies to a feature not available inPostgres Pro (seedatetime_precision for the fractional seconds precision of interval type attributes) |
attribute_udt_catalogsql_identifier
Name of the database that the attribute data type is defined in (always the current database) |
attribute_udt_schemasql_identifier
Name of the schema that the attribute data type is defined in |
attribute_udt_namesql_identifier
Name of the attribute data type |
scope_catalogsql_identifier
Applies to a feature not available inPostgres Pro |
scope_schemasql_identifier
Applies to a feature not available inPostgres Pro |
scope_namesql_identifier
Applies to a feature not available inPostgres Pro |
maximum_cardinalitycardinal_number
Always null, because arrays always have unlimited maximum cardinality inPostgres Pro |
dtd_identifiersql_identifier
An identifier of the data type descriptor of the attribute, unique among the data type descriptors pertaining to the composite type. 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.) |
is_derived_reference_attributeyes_or_no
Applies to a feature not available inPostgres Pro |
