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lnkuiper avatar lnkuiper commented on September 28, 2024 3

Hi @arjenpdevries, thanks for the bug report!

This is currently expected behavior. We make a distinction between positional and named parameters. Positional parameters can only be used positionally, and named parameters can only be used by supplying their name.

This will work:

D create or replace macro test(a := 'auto') AS a;
D select test(a:='fiets');
┌────────────────────┐
│ test(a := 'fiets') │
│      varchar       │
├────────────────────┤
│ fiets              │
└────────────────────┘

Or this will work:

D create or replace macro test(a) AS a;
D select test('fiets');
┌───────────────┐
│ test('fiets') │
│    varchar    │
├───────────────┤
│ fiets         │
└───────────────┘

And this will also work:

D create or replace macro test(a, b := 'fiets') AS (a, b);
D select test('auto');
┌────────────────────────────┐
│        test('auto')        │
│ struct( varchar,  varchar) │
├────────────────────────────┤
│ {'': auto, '': fiets}      │
└────────────────────────────┘

But this won't:

D select test('fiets', 'auto');
Error: Binder Error: Macro function 'test(a)' requires a single positional argument, but 2 positional arguments were provided.
LINE 1: select test('fiets', 'auto');
               ^

Named parameters always come after positional parameters (like in Python).

However, I realise that Python accepts positional parameters even when they have a default:

>>> def test(a='auto'):
...   return a
... 
>>> test('fiets')
'fiets'

Perhaps we can add this functionality as well.

from duckdb.

arjenpdevries avatar arjenpdevries commented on September 28, 2024

Ah thanks for the clear explanation! I see now how this is expected.

from duckdb.

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