Nested STRUCT columns in DuckDB cause infinite recursion? #3775
Description
I'm using DuckDB support in TablePlus v6.8.0 on macOS Tahoe 26.2. It may be that my data structure is just unsupported, but when I run this query:
SELECT fetchers FROM read_json_auto ('/MYPATH/tptest2/*.json');
with this being the only JSON file in "tptest2":
{
"notices_delivered": 0,
"fetchers": [
{
"name": "evnews",
"report": {
"errors": [],
"info": {},
"failures": []
},
"n_items": 2,
"description": "News check"
}
]
}
the app crashes with the attached dump, the particular issue apparently being
Exception Message: Thread stack size exceeded due to excessive recursion
If I pull the simple attribute instead with
SELECT notices_delivered FROM...
all is well.
The query that crashes in TablePlus works fine in the DuckDB CLI 1.4.4 (Andium):
DuckDB v1.4.4 (Andium) 6ddac802ff
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
D SELECT * FROM read_json_auto('local/tptest2/*.json');
┌───────────────────┬───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ notices_delivered │ fetchers │
│ int64 │ struct("name" varchar, report struct(errors json[], info map(varchar, json), failures json[]), n_items bigint, description varchar)[] │
├───────────────────┼───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ 0 │ [{'name': evnews, 'report': {'errors': [], 'info': {}, 'failures': []}, 'n_items': 2, 'description': News check}] │
└───────────────────┴───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Just ran across DuckDB this morning so I may just not be up on limitations or conventions here, but thought I'd let you know about the crash. Thank you!