如何选择其他列不同的行id ?

Question

给定表data如下:

<表类> id a1 a2 a3 tbody><<tr>1b300102c111123b300104b30010

作为笑话:

SELECT t1.id, t2.id
FROM data t1 
JOIN data t2 ON (t1.a1, t1.a2, t1.a3) <> (t2.a1, t2.a2, t2.a3)
LIMIT 1

如果某些列可能为NULL，则

SELECT t1.id, t2.id
FROM data t1 
JOIN data t2 ON NOT ((t1.a1, t1.a2, t1.a3) <=> (t2.a1, t2.a2, t2.a3))
LIMIT 1