Explain.datadoghq.com – a free explain plan visualizer
Visualize and analyze database query execution plans for PostgreSQL, MySQL, SQL Server, and MongoDB to optimize performance, brought to you by Datadog.
Explain.datadoghq.com – a free explain plan visualizer launched on January 28, 2026 with 15 votes, #794 of 14,585 launches that month and more than 90% of that year's launches.
In plain words
Explain.datadoghq.com is a free tool that visualizes database explain plans, making query performance analysis more accessible. It's designed for developers and database administrators who need to understand how their queries execute. The tool takes complex explain plan output and presents it in a visual format, helping users identify performance bottlenecks and optimization opportunities without requiring deep database expertise.
written from the facts on this page · September 2026
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I made a tool to visualize MySQL EXPLAIN query plans2024 · mysqlexplain.com · ▲19I was always confused when trying to optimize a slow MySQL query as the output of the EXPLAIN command is so cryptic and totally useless. And there wasn't any tool that could help visualize what a query does - compared to PostgreSQL which has multiple... So, I started developing such a tool for MySQL. But boy, I didn't expect how complicated this is in reality. There were so many things hiding in tiny information pieces that I had to understand. But it also confirmed me in that a tool should try to understand the EXPLAIN output and not a human as it is too easy to oversee something. After…
Visualize SQL Queries2022 · animatesql.com · ▲259My co-worker and I were debugging a SQL issue; having not seen SQL in two years, I embarrassed myself by confusing union vs. join. After this episode, I tried refreshing my SQL memory, but there are few websites that animate SQL for you. Most of them just have a series of images to help you visualize. There are a few tools that are quite good and robust (especially for large/complex use cases) but require installation and are too complex for my simple purpose. So, just created a small tool to help visualise SQL. Most of the animations are just my understanding of how SQL works. Would…
pg_flame – flamegraph visualizations of PostgreSQL query plans2019 · github.com · ▲321A flamegraph generator for Postgres EXPLAIN ANALYZE output. - mgartner/pg_flame
Postgres query lock explainer2023 · github.com · ▲143This is like 4 years old, but I’m braver now and ready to share stuff with this community. I’ve been a lurker for a while. I made this tool - it’s kind of like “explain” but it tells you about what locks would be required by the query. I was making it as part of a larger tool that would try to prevent deadlocks during migrations at my last company, I never finished it.
- AUA user interface for Postgres EXPLAIN that also gives tips2019 · pgmustard.com · ▲50
pgMustard is a Postgres EXPLAIN visualisation tool that also gives performance advice, scored based on its potential to speed up your query.
MySQL Visual Explain2024 · mysqlexplain.com · ▲22An explained SQL output visualized for easier understanding
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