syntax error when DISTINCT SELECT contains both star and explicit column list

To reproduce

This works on the demo:

select symbol from core_price where timestamp in '2025-12-08T10';

This also works:

select distinct symbol from core_price where timestamp in '2025-12-08T10';

This works too:

select distinct * from core_price where timestamp in '2025-12-08T10';

This works as well (one of the symbol columns gets a sythetic suffix)

select symbol, * from core_price where timestamp in '2025-12-08T10';

but this does not work:

select distinct symbol, * from core_price where timestamp in '2025-12-08T10';

The query errors out with Duplicate column [name=symbol]

As a QuestDB user, I consider this to be a surprising inconsistency.

QuestDB version:

9.2.2

Start by reproducing the reported SQL in a local QuestDB instance, then trace the SQL parser and projection handling for DISTINCT queries that combine an explicit column with *. Add a regression test for the exact query and verify that it no longer raises Duplicate column while the other listed queries continue to work.