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