xxxx

mysql> show index from documenti;
+-----------+------------+----------+--------------+---------------+-----------+-------------+----------+--------+------+------------+----------+
| Table     | Non_unique | Key_name | Seq_in_index | Column_name   | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment  |
+-----------+------------+----------+--------------+---------------+-----------+-------------+----------+--------+------+------------+----------+
| documenti |          0 | PRIMARY  |            1 | id            | A         |        1213 |     NULL | NULL   |      | BTREE      |          |
| documenti |          1 | titolo   |            1 | titolo        | NULL      |        1213 |     NULL | NULL   | YES  | FULLTEXT   | disabled |
| documenti |          1 | titolo   |            2 | abstract      | NULL      |        1213 |     NULL | NULL   | YES  | FULLTEXT   | disabled |
| documenti |          1 | titolo   |            3 | testo         | NULL      |        1213 |     NULL | NULL   | YES  | FULLTEXT   | disabled |
| documenti |          1 | titolo   |            4 | area_tematica | NULL      |        1213 |     NULL | NULL   | YES  | FULLTEXT   | disabled |
+-----------+------------+----------+--------------+---------------+-----------+-------------+----------+--------+------+------------+----------+