mysql right() 函数

mysql> select right("  dedede",6);
+---------------------+
| right("  dedede",6) |
+---------------------+
| dedede              |
+---------------------+
1 row in set (0.00 sec)

mysql> select right("  dedede",3);
+---------------------+
| right("  dedede",3) |
+---------------------+
| ede                 |
+---------------------+
1 row in set (0.00 sec)