duckdb / duckdb/unity_catalog

_duckdb.NotImplementedException: Not implemented Error: Tried to fallback to unknown type for 'variant'

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Dominant language
C++
Stars
110
Forks
44
Avg merge
2d 13h
Merged PRs (30d)
4

Description

I always get this error, even when not having any variant column in select

Contributor guide

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Research direction

Start by reproducing the reported _duckdb.NotImplementedException with a query that does not select a variant column, then trace the fallback path that reports the unknown 'variant' type. Done means the reported query no longer raises this error, with behavior covered by a regression test.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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