# 37.48. 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 37.46. sql_features
Columns
Column 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 |