Improved output of datafuson-cli with empty results #8904
Description
Is your feature request related to a problem or challenge?
As @Jefffrey @crepererum and @berkaysynnada pointed out on #8895 (see #8895 (comment)), the handling of results that have no rows could potentially be improved
datafusion-cli
seleDataFusion CLI v34.0.0
❯ select * from (values (1));
+---------+
| column1 |
+---------+
| 1 |
+---------+
1 row in set. Query took 0.009 seconds.
❯ select * from (values (1)) where column1 = 2;
0 rows in set. Query took 0.003 seconds.Note there is nothing printed out from select * from (values (1)) where column1 = 2; (not even headers) when there are no results
Describe the solution you'd like
It would be nice to print out headers even when there was no result:
So something like:
select * from (values (1)) where column1 = 2;
+---------+
| column1 |
+---------+
+---------+Describe alternatives you've considered
We can also do nothing
Additional context
This issue itself isn't particularly pressing in my opinion