STRCMP(str1, str2)

比較兩個字符串，如果這兩個字符串相等返回0，如果第一個參數是根據當前的排序順序比第二較小則返回-1，否則返回1。

SQL> SELECT STRCMP('MOHD', 'MOHD');
+---------------------------------------------------------+
| STRCMP('MOHD', 'MOHD')                                  |
+---------------------------------------------------------+
| 0                                                       |
+---------------------------------------------------------+
1 row in set (0.00 sec)

另一個例子是：

SQL> SELECT STRCMP('AMOHD', 'MOHD');
+---------------------------------------------------------+
| STRCMP('AMOHD', 'MOHD')                                 |
+---------------------------------------------------------+
| -1                                                      |
+---------------------------------------------------------+
1 row in set (0.00 sec)

讓我們來看看一個例子：

SQL> SELECT STRCMP('MOHD', 'AMOHD');
+---------------------------------------------------------+
| STRCMP('MOHD', 'AMOHD')                                 |
+---------------------------------------------------------+
| 1                                                       |
+---------------------------------------------------------+
1 row in set (0.00 sec)