mysql> SELECT [칼럼명] FROM [테이블명] WHERE [칼럼명] LIKE '%특정문자열%; 
mysql> select event,descr from table_name where descr like '%ssh%';
+-----------+-----------------------------------------------+
| event     | descr                                         |
+-----------+-----------------------------------------------+
| 771948545 | sshel.com                                     | 
| 302252036 | SSH Login Fail! (ID:admin|IP:10.xx.8.10)      | 
| 302186499 | SSH Login Success! (ID:admin|IP:10.xx.8.10)   | 
| 302186499 | SSH Login Success! (ID:admin|IP:10.xx.15.150) | 
+-----------+-----------------------------------------------+
4 rows in set (0.38 sec)

mysql>