PostgreSQL 8.1.5 Documentation
Prev	Fast Backward	Chapter 31. The Information Schema	Fast Forward	Next

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

Prev	Home	Next
`schemata`	Up	`sql_implementation_info`

31.28. sql_features

31.28. `sql_features`