Github user aokolnychyi commented on the issue:
https://github.com/apache/spark/pull/18692
I am not sure we can infer ``a == b`` if ``a in (0, 2, 3, 4)`` and ``b in
(0, 2, 3, 4)``.
table 'a'
```
a1 a2
1 2
3 3
4 5
```
table 'b'
```
b1 b2
1 -1
2 -2
3 -4
```
```
SELECT * FROM a, b WHERE a1 in (1, 2) AND b1 in (1, 2)
// 1 2 1 -1
// 1 2 2 -2
```
```
SELECT * FROM a JOIN b ON a.a1 = b.b1 WHERE a1 in (1, 2) AND b1 in (1, 2)
// 1 2 1 -1
```
Do I miss anything?
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