anchor.diff:      ;
   
   columnDefinition
  -    : columnName dataType SORT? (VISIBLE | INVISIBLE)? (DEFAULT (ON NULL)? expr | identityClause)? (ENCRYPT encryptionSpec)? (inlineConstraint+ | inlineRefConstraint)?
  +    : columnName dataType SORT? (VISIBLE | INVISIBLE)? (DEFAULT (ON NULL)? expr | identityClause)? (ENCRYPT encryptionSpecification_)? (inlineConstraint+ | inlineRefConstraint)?
       ;
   
   identityClause
  
positive.code:     ;
  
  alterTableProperties
      : renameTableSpecification_ | REKEY encryptionSpec
      ;
  
  renameTableSpecification_
  
negative.code:     : TRUNCATE TABLE tableName
      ;
  
  createSpecification_
      : (GLOBAL TEMPORARY)?
      ;
  
  