Advance column detection

For an input of

```sql
SELECT
  count(*)
FROM
  products
```

I think it should automatically detect a column `count(*)`, even if we don't guess the name correctly.

Or 

```sql
SELECT
  *
FROM
  products
```

Even though we don't know what `*` can resolve into, I wish it could still attempt to generate the output result (maybe pretend there is a column called `*`).