gistfile1.txt

MariaDB [test]> create table t20 (pk int primary key, a int, key GEN_CLUST_INDEX(a)) engine=innodb;
ERROR 1280 (42000): Incorrect index name 'GEN_CLUST_INDEX'
MariaDB [test]> show warnings;
+---------+------+-------------------------------------------------------------------------------------------------------------+
| Level   | Code | Message                                                                                                     |
+---------+------+-------------------------------------------------------------------------------------------------------------+
| Warning | 1280 | Cannot Create Index with name 'GEN_CLUST_INDEX'. The name is reserved for the system default primary index. |
| Error   | 1280 | Incorrect index name 'GEN_CLUST_INDEX'                                                                      |
| Warning | 1030 | Got error -1 "Internal error < 0 (Not system error)" from storage engine InnoDB                             |
+---------+------+-------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)