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31.28. 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 31-26. 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 character_data 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

 
 
  Published courtesy of The PostgreSQL Global Development Group Design by Interspire