35.48. sql_features

35.48. `sql_features`
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## 35.48. `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 35.46. 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

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