Support for index definition key (columns)

[DQinYuan]

sql as follow can run in mysql:

CREATE TABLE `table10_int_autoinc` (
  `col_bigint` bigint, 
  `col_time` time, 
  `col_double` double, 
  `col_bigint_key` bigint, 
  `col_char_20` char(20), 
  `col_datetime` datetime, 
  `col_varchar_20_key` varchar(20), 
  `col_varchar_20` varchar(20),
   `col_date` date, `col_float` float, 
   `col_float_key` float, 
   `col_char_20_key` char(20), 
   `col_time_key` time, 
   pk integer auto_increment,  
   key (`col_bigint_key`), 
   key (`col_date_key`), 
   primary key (pk))

but it can not parse in this parser, because it do not support anonymous index definition like 'key (columns)'