José Valim

Explorer does not support a decimal yet but we want to. There is an open issue.

I wonder if we should introduce a proper buffer API instead. IIRC, for bulk inserts, each column is an arrow buffer. So maybe we should have: `ADBC.Buffer.u8([0, 2, 3])` and...

@cocoa-xu is this still relevant?

This is implemented I believe. Both PG support and arrow lists.

> I believe append_layers would still be accepted in VegaLite, even though they're deprecating VegaLite.Data (@josevalim, can you confirm?) Correct.

This looks good to me but we should make the types of queries customizable, with the default of :a or :aaaa. WDYT?

In case @feld does not have time to update this (which is very understandable since it took us forever to reply), someone else is welcome to send a PR on...

Shall we close this one if there are other ways? Sorry for the delay. But if you have @mruoss here, you are in good hands :)

It may or may not work. Can you please try running the test suite on v1.12? If it works, maybe send a PR to add 1.12 to CI?

Oh, I didn't know we had `fold`. It seems it works with expressions, which means we can use the structure in Explorer.QUery to fold over anything and it will be...