sql_parts
   The table sql_parts contains information about
   which of the several parts of the SQL standard are supported by
   PostgreSQL.
  
Table 36.46. sql_parts Columns
| Name | Data Type | Description | 
|---|---|---|
feature_id | character_data | An identifier string containing the number of the part | 
feature_name | character_data | Descriptive name of the part | 
is_supported | yes_or_no | 
       YES if the part 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 part |