如果我使用整数值作为 MySQL LOCATE() 函数的参数，会发生什么情况？

MySQL 允许我们使用整数值作为 LOCATE() 函数的参数。我们不需要使用引号。可以借助以下示例进行演示 -

示例

mysql> Select LOCATE(5,1698235);
+-------------------+
| LOCATE(5,1698235) |
+-------------------+
|                 7 |
+-------------------+
1 row in set (0.00 sec)

mysql> Select LOCATE(56,1698235);
+--------------------+
| LOCATE(56,1698235) |
+--------------------+
|                  0 |
+--------------------+
1 row in set (0.00 sec)

mysql> Select LOCATE(23,1698235);
+--------------------+
| LOCATE(23,1698235) |
+--------------------+
|                  5 |
+--------------------+
1 row in set (0.00 sec)