MySQL 如何使用IN()函数来比较行构造函数？

我们还可以使用IN()函数来比较行构造函数。请考虑以下示例，以使其更清晰−

mysql> Select (10,2) IN ((5,10),(10,2),(2,10),(100,100));
+--------------------------------------------+
| (10,2) IN ((5,10),(10,2),(2,10),(100,100)) |
+--------------------------------------------+
| 1                                          |
+--------------------------------------------+
1 row in set (0.00 sec)

mysql> Select (10,2) IN ((5,10),(2,10),(100,100));
+-------------------------------------+
| (10,2) IN ((5,10),(2,10),(100,100)) |
+-------------------------------------+
| 0                                   |
+-------------------------------------+
1 row in set (0.00 sec)

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