support value-wise query result

https://duckdb.org/dev/sqllogictest/result_verification#row-wise-vs-value-wise-result-ordering

```sql
# row-wise
query II
SELECT 42, 84 UNION ALL SELECT 10, 20;
----
42	84
10	20

# value-wise
query II
SELECT 42, 84 UNION ALL SELECT 10, 20;
----
42
84
10
20
```