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PostgreSQL Manual

This manual is provided as a courtesy. It is not an official source. Please check postgresql.org for updated information.

PostgreSQL Manual

PostgreSQL Manual
PostgreSQL 8.1.3 Documentation
PrevFast BackwardChapter 31. The Information SchemaFast ForwardNext

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

NameData TypeDescription
feature_idcharacter_dataIdentifier string of the feature
feature_namecharacter_dataDescriptive name of the feature
sub_feature_idcharacter_dataIdentifier string of the subfeature, or a zero-length string if not a subfeature
sub_feature_namecharacter_dataDescriptive name of the subfeature, or a zero-length string if not a subfeature
is_supportedcharacter_data YES if the feature is fully supported by the current version of PostgreSQL, NO if not
is_verified_bycharacter_data Always null, since the PostgreSQL development group does not perform formal testing of feature conformance
commentscharacter_dataPossibly a comment about the supported status of the feature
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schemataUpsql_implementation_info

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