• Stars
    star
    2,492
  • Rank 18,431 (Top 0.4 %)
  • Language
    TypeScript
  • License
    PostgreSQL License
  • Created over 5 years ago
  • Updated 4 months ago

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Repository Details

Postgres Explain Visualizer 2

PEV2: A VueJS component to show a graphical vizualization of a PostgreSQL execution plan.

Usage

To use the explain vizualizer you can choose one of the following options:

Dalibo service (recommended)

explain.dalibo.com

This service is provided by Dalibo and can help you to share your plans with colleagues or customers.

All-in-one local (no installation, no network)

PEV2 can be run locally without any external internet resource.

Simply download index.html, open it in your favorite internet browser.

Integrated in a web application

Without building tools

<script src="https://unpkg.com/[email protected]/dist/vue.global.prod.js"></script>
<script src="https://unpkg.com/pev2/dist/pev2.umd.js"></script>
<link
  href="https://unpkg.com/[email protected]/dist/css/bootstrap.min.css"
  rel="stylesheet"
/>
<link rel="stylesheet" href="https://unpkg.com/pev2/dist/style.css" />

<div id="app">
  <pev2 :plan-source="plan" plan-query="" />
</div>

<script>
  const { createApp } = Vue

  const plan = "Seq Scan on foo  (cost=0.00..155.00 rows=10000 width=4)"

  const app = createApp({
    data() {
      return {
        plan: plan,
      }
    },
  })
  app.component("pev2", pev2.Plan)
  app.mount("#app")
</script>

For a complete example, see this codesandbox

With build tools

PEV2 can be integrated as a component in a web application.

Install it:

npm install pev2

Declare the PEV2 component and use it:

import { Plan } from "pev2"
import "pev2/dist/style.css"

export default {
  name: "PEV2 example",
  components: {
    pev2: Plan,
  },
  data() {
    return {
      plan: plan,
      query: query,
    }
  },
}

Then add the PEV2 component to your template:

<div id="app">
  <pev2 :plan-source="plan" :plan-query="query"></pev2>
</div>

PEV2 requires Bootstrap (CSS) to work so don't forget to add the following in you header (or load them with your favorite bundler).

<link
  href="https://unpkg.com/[email protected]/dist/css/bootstrap.min.css"
  rel="stylesheet"
/>

For a complete example, see this codesandbox.

Disclaimer

This project is a rewrite of the excellent Postgres Explain Visualizer (pev). Kudos go to Alex Tatiyants.

The pev project was initialy written in early 2016 but seems to be abandoned since then. There was no activity at all for more than 3 years and counting though there are several issues open and relevant pull requests pending.

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