Key | Default | Extra |
+-------------------------+---------------------+------+-----+---------+-------+
| TABLE_SCHEMA            | varchar(64)         | NO   |     |         |       |
| TABLE_NAME              | varchar(64)         | NO   |     |         |       |
| INDEX_NAME              | varchar(64)         | NO   |     |         |       |
| SEQ_IN_INDEX            | bigint(2)           | NO   |     | 0       |       |
| COLUMN_NAME             | varchar(64)         | NO   |     |         |       |
| 