getredash/redash

MySQL: support POINT data type

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#4094 opened on Aug 25, 2019

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Backendhelp wanted

Description

Currently when querying a POINT data type it will fail, because MySQL returns a binary encoded value.

Ideally Redash would decode the POINT components (x,y) and return those, but I couldn't find an obvious way in Python to do this conversion.

Contributor guide

Tech stack
pythonmysql
Domain
databasebackend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Python knowledgeMySQL basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
55
Research direction
Investigate the MySQL query runner in the Redash codebase (likely redash/query runner/mysql.py). Understand how Redash currently processes MySQL query results. Look into decoding the binary POINT representation using Python's struct module or converting to WKT format via MySQL's ST AsText function. Consider testing with sample POINT data to ensure correct x,y extraction.