37.48. sql_features
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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 . There you can also find some additional background information.
sql_features
ColumnsColumn 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