najjednostavnije ti je da napravis novu tabelu gde je to autoinc i odradis insert into nova tabela select * from stara tabela ..
a moze i ovako:
Code:
mysql> set @x=0;
Query OK, 0 rows affected (0.00 sec)
mysql> update t1 set id = @x := @x+1;
Query OK, 35 rows affected (0.00 sec)
Rows matched: 35 Changed: 35 Warnings: 0
mysql> select * from t1;
+------+------+
| id | opis |
+------+------+
| 1 | xxx |
| 2 | xxx |
| 3 | xxx |
| 4 | xxx |
| 5 | xxx |
| 6 | xxx |
| 7 | xxx |
| 8 | xxx |
| 9 | xxx |
| 10 | xxx |
| 11 | xxx |
| 12 | xxx |
| 13 | xxx |
| 14 | xxx |
| 15 | xxx |
| 16 | xxx |
| 17 | xxx |
| 18 | xxx |
| 19 | xxx |
| 20 | xxx |
| 21 | xxx |
| 22 | xxx |
| 23 | xxx |
| 24 | xxx |
| 25 | xxx |
| 26 | xxx |
| 27 | xxx |
| 28 | xxx |
| 29 | xxx |
| 30 | xxx |
| 31 | xxx |
| 32 | xxx |
| 33 | xxx |
| 34 | xxx |
| 35 | xxx |
+------+------+
35 rows in set (0.00 sec)
mysql>