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 36.42. 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 |