---
title: "Why CockroachDB doesn't use EvalPlanQual"
url: https://daily.dev/posts/why-cockroachdb-doesn-t-use-evalplanqual-fz9ncpqde
source_url: https://www.cockroachlabs.com/blog/why-cockroachdb-doesnt-use-evalplanqual/
type: article
source: "CockroachDB"
author: "Cockroach Labs"
published: 2024-04-05T20:12:24.522Z
updated: 2024-05-09T09:21:59.549Z
tags: ["postgresql", "cockroachdb"]
reading_time: 7
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Why CockroachDB doesn't use EvalPlanQual

**[CockroachDB](https://daily.dev/sources/cockroachdb)** · [@cockroachdb302](https://daily.dev/cockroachdb302) · 7 min read · 0 upvotes · 0 comments

## Summary

The post discusses the behavior of PostgreSQL under READ COMMITTED isolation and how CockroachDB prevents lost updates. It also explains the invariants in the example and how CockroachDB handles application-level retries.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.cockroachlabs.com/blog/why-cockroachdb-doesnt-use-evalplanqual/>

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---

Tags: [#postgresql](https://daily.dev/tags/postgresql), [#cockroachdb](https://daily.dev/tags/cockroachdb)

[View this post on daily.dev](https://daily.dev/posts/why-cockroachdb-doesn-t-use-evalplanqual-fz9ncpqde)