appletreeisyellow commented on issue #9171:
URL:
https://github.com/apache/arrow-datafusion/issues/9171#issuecomment-1942830786
For a predicate with more than one columns, we might want to have a WHEN
clause for each column.
For example, rewriting a predicate like `x < 5 AND x > 0 AND y = 10` into
```sql
CASE
WHEN x_null_count = x_row_count THEN false
WHEN y_null_count = y_row_count THEN false
ELSE <rewrite for x < 5 AND x > 0 AND y = 10>
END
```
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