We can also use IN() function to compare row constructors. Consider the following example to make it clearer −
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)