36.43. sql_features
The table
sql_features
contains information
about which formal features defined in the SQL standard are
supported by
PostgreSQL
. This is the
same information that is presented in
Appendix D
.
There you can also find some additional background information.
Table 36.41.
sql_features
Columns
| Name | Data Type | Description |
|---|---|---|
feature_id
|
character_data
|
Identifier string of the feature |
feature_name
|
character_data
|
Descriptive name of the feature |
sub_feature_id
|
character_data
|
Identifier string of the subfeature, or a zero-length string if not a subfeature |
sub_feature_name
|
character_data
|
Descriptive name of the subfeature, or a zero-length string if not a subfeature |
is_supported
|
yes_or_no
|
YES
if the feature is fully supported by the
current version of
PostgreSQL
,
NO
if not
|
is_verified_by
|
character_data
|
Always null, since the PostgreSQL development group does not perform formal testing of feature conformance |
comments
|
character_data
|
Possibly a comment about the supported status of the feature |