When column type is STRING and one of the values is NULL, values get cast to strings

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24,845 stars (24,845 stars)

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Avg merge 9d 5h (Avg merge 9d 5h)3 merged PRs in 30d (3 merged PRs in 30d)

Description

select '2016-04-09' as t
union all
select null as t

Contributor guide

Research direction

Examine the query result handling code to understand why NULL values are cast to strings; trace the data flow from query execution to result formatting.

Tech stack

pythonsql

Domain

backenddatabase

Issue type

Bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Clear

Prerequisites

GitPythonSQL

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70