37.46. sql_packages
  The table
  
   sql_packages
  
  contains information
   about which feature packages defined in the SQL standard are
   supported by
  
   PostgreSQL
  
  .  Refer to
  
   Appendix D
  
  for background information on feature packages.
 
   
    Table 37.44. 
    
     sql_packages
    
    Columns
   
  
| Name | Data Type | Description | 
|---|---|---|
| 
        feature_id
        | 
        character_data
        | Identifier string of the package | 
| 
        feature_name
        | 
        character_data
        | Descriptive name of the package | 
| 
        is_supported
        | 
        yes_or_no
        | 
        YES
       if the package 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 package |