john zh created CALCITE-3261:
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Summary: Incorrect output field name from jdbc
Key: CALCITE-3261
URL: https://issues.apache.org/jira/browse/CALCITE-3261
Project: Calcite
Issue Type: Improvement
Components: core, jdbc-adapter
Reporter: john zh
After implementing the missing `print(ResultSet)` method from the examples in
Calcite [tutorial|[https://calcite.apache.org/docs/index.html]], I found that
the output field names are incorrect:
{code:sh}
[deptno, EXPR$1]
[1, 1]
[2, 2]
{code}
The field name `EXPR$1` can be improved to be more human readable like MySQL:
{code:sh}
+--------+--------------+
| deptno | min(e.empid) |
+--------+--------------+
| 1 | 1 |
| 2 | 2 |
+--------+--------------+
{code}
PS: the sql statement generating the above outputs:
{code:sql}
select d.deptno, min(e.empid) from hr.emps as e join hr.depts as d on e.deptno
= d.deptno group by d.deptno having count(*) > 1
{code}
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