et_transform ::=

 column_name FROM 
 {
  NULL |
 
  CONSTANT string |
  
  CONCAT (field_name | CONSTANT string ,) ... |             
               
  LOBFILE (fieldname | CONSTANT string: ,) ...
                 
   [lobfile_attr_list] 
 }

For information on how to read this syntax, see Appendix B.

End of description.