anchor.diff:  
   opt_raise_list
      :
  -   | COMMA a_expr (COMMA a_expr)*
  +   | (COMMA a_expr)+
      ;
   
   opt_raise_using
  
positive.code: 
  
  a_expr_like
     : a_expr_qual_op (NOT? (LIKE | ILIKE | SIMILAR TO | (BETWEEN SYMMETRIC?)) a_expr_qual_op opt_escape)?
     ;
  /* 8*/
  
  
negative.code:    ;
  
  plsql_opt_transaction_chain
     : AND (NO? CHAIN)
     |
     ;
  
  