Development
Result Verification
The standard way of verifying results of queries is using the `query` statement, followed by the letter `I` times the number of columns that are expected in the result. After the query, four dashes (` ----`) are expected followed by the result values separated by tabs. For example,  
```sql
query II
SELECT 42, 84 UNION ALL SELECT 10, 20;
----
4284
1020
```  
For legacy reasons the letters `R` and `T` are also accepted to denote columns.  
> **Deprecated.  ** DuckDB deprecated the usage of types in the sqllogictest. The DuckDB test runner does not use or need them internally – therefore, only `I` should be used to denote columns.