如果我将整数值用作MySQL LOCATE()函数的参数会发生什么?
MySQL允许我们将整数值作为LOCATE()函数的参数使用。我们不需要使用引号。可以借助以下示例进行演示-
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例子
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)