likeの一文字ワイルドカード

勘違いしていたのでめも。
mysqlでの一文字一致は「?」ではなく、「_」でした。

mysql> select * from rr where name like 'db2%';
+----+------+-------+------+---------------+-----+-------+
| id | zone | name  | type | data          | aux | ttl   |
+----+------+-------+------+---------------+-----+-------+
|  4 |    1 | db2m  | A    | 192.168.2.163 | 100 | 86400 |
|  5 |    1 | db2s  | A    | 192.168.2.163 |  20 | 86400 |
|  6 |    1 | db2s  | A    | 192.168.2.164 |  50 | 86400 |
| 71 |    1 | db2s1 | A    | 192.168.2.164 | 100 | 86400 |
+----+------+-------+------+---------------+-----+-------+
4 rows in set (0.00 sec)

mysql> select * from rr where name like 'db2?';
Empty set (0.00 sec)

mysql> select * from rr where name like 'db2_';
+----+------+------+------+---------------+-----+-------+
| id | zone | name | type | data          | aux | ttl   |
+----+------+------+------+---------------+-----+-------+
|  4 |    1 | db2m | A    | 192.168.2.163 | 100 | 86400 |
|  5 |    1 | db2s | A    | 192.168.2.163 |  20 | 86400 |
|  6 |    1 | db2s | A    | 192.168.2.164 |  50 | 86400 |
+----+------+------+------+---------------+-----+-------+
3 rows in set (0.00 sec)