mysql>
mysql> SELECT 'abc' < 'b';
+-------------+
| 'abc' < 'b' |
+-------------+
| 1 |
+-------------+
1 row in set (0.00 sec)
mysql>
mysql> SELECT 'bbc' <= 'b';
+--------------+
| 'bbc' <= 'b' |
+--------------+
| 0 |
+--------------+
1 row in set (0.00 sec)