| specific_catalog | sql_identifier | Name of the database containing the function (always the current database) |
| specific_schema | sql_identifier | Name of the schema containing the function |
| specific_name | sql_identifier | The "specific name" of the function. See Section 31.26 for more information.
|
| ordinal_position | cardinal_number | Ordinal position of the parameter in the argument list of the
function (count starts at 1)
|
| parameter_mode | character_data | Always IN, meaning input parameter (in the
future there might be other parameter modes)
|
| is_result | character_data | Applies to a feature not available in PostgreSQL |
| as_locator | character_data | Applies to a feature not available in PostgreSQL |
| parameter_name | sql_identifier | Name of the parameter, or null if the parameter has no name |
| data_type | character_data | Data type of the parameter, 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 | Always null, since this information is not applied to parameter data types in PostgreSQL |
| character_octet_length | cardinal_number | Always null, since this information is not applied to parameter data types 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 | Always null, since this information is not applied to parameter data types in PostgreSQL |
| numeric_precision_radix | cardinal_number | Always null, since this information is not applied to parameter data types in PostgreSQL |
| numeric_scale | cardinal_number | Always null, since this information is not applied to parameter data types in PostgreSQL |
| datetime_precision | cardinal_number | Always null, since this information is not applied to parameter data types in PostgreSQL |
| interval_type | character_data | Always null, since this information is not applied to parameter data types in PostgreSQL |
| interval_precision | character_data | Always null, since this information is not applied to parameter data types in PostgreSQL |
| udt_catalog | sql_identifier | Name of the database that the data type of the parameter is
defined in (always the current database)
|
| udt_schema | sql_identifier | Name of the schema that the data type of the parameter is
defined in
|
| udt_name | sql_identifier | Name of the data type of the parameter
|
| 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 parameter,
unique among the data type descriptors pertaining to the
function. 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.)
|