getredash/redash

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

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#2,074 opened on Nov 6, 2017

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 (23 comments) (0 reactions) (0 assignees)Python (4,236 forks)batch import
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Description

Query to reproduce:

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

http://demo.redash.io/queries/5638/source

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