On Thu, 13 Mar 2025 at 15:02, Alexandra Wang
<alexandra.wang.oss@gmail.com> wrote:
> I have attached the new patches.
Okay I finally found the time to look at this. I created a draft PR
for pg_duckdb[1] to see if I would run into issues. There was only one
real issue I found by doing this. The .* syntax is encoded as NULL in
refupperindexpr, but that is currently already a valid representation
of a slice operation without specifying upper or lower. The easiest
way to reproduce the problem is:
CREATE TABLE arr(a int[]);
explain (verbose) SELECT a[:] FROM arr;
QUERY PLAN
───────────────────────────────────────────────────────────────
Seq Scan on public.arr (cost=0.00..23.60 rows=1360 width=32)
Output: a.*
That last line should instead be
Output: a[:]
So I think we need to add a new Star node type, that represents the *
literal after parsing.
I haven't looked too closely at the code yet.
