Mega Code Archive
To match abcabcabc, you need to use parentheses
mysql>
mysql> SELECT 'abcabcabc' REGEXP '(abc){3}';
+-------------------------------+
| 'abcabcabc' REGEXP '(abc){3}' |
+-------------------------------+
| 1 |
+-------------------------------+
1 row in set (0.00 sec)