# Deep Dive Into PostgreSQL Indexes – Free Course at Percona University Online

**URL:** <https://forums.percona.com/t/deep-dive-into-postgresql-indexes-free-course-at-percona-university-online/8257>\
**Category:** Training & Events\
**Tags:** postgres\
**Created:** [November 10, 2020, 7:54am UTC](https://forums.percona.com/t/deep-dive-into-postgresql-indexes-free-course-at-percona-university-online/8257 "2020-11-10T07:54:12Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![daniil.bazhenov](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/daniil.bazhenov/32/62_2.png) [@daniil.bazhenov](https://forums.percona.com/u/daniil.bazhenov)\
**Post date:** [November 10, 2020, 7:54am UTC](https://forums.percona.com/t/deep-dive-into-postgresql-indexes-free-course-at-percona-university-online/8257/1 "2020-11-10T07:54:12Z")

</div>

_Percona University Online_ has released its second free course, _“A Deep Dive Into PostgreSQL Indexes”_ by Ibrar Ahmed, Senior Software Engineer at Percona.

This course consists of 13 short videos. Pass a brief quiz afterward and receive a _Certificate of Completion_ from Percona. Begin the course on Google Classroom [here](https://classroom.google.com/c/MTQ4MzczNDExMjM4?cjc=xk5k6fz). If you’re prompted for a class identifier, enter code [xk5k6fz](https://classroom.google.com/c/MTQ4MzczNDExMjM4?cjc=xk5k6fz)

- Lesson 1: Overview

- Lesson 2: Heap vs Index
- Lesson 3: How to Create Indexes?
- Lesson 4: How to create an Expression Index?
- Lesson 5: Advantages of a Partial Index
- Lesson 6: Index Types: B-Tree
- Lesson 7: Index Types: What is the HASH Index?
- Lesson 8: Index Types: What is the BRIN Index?
- Lesson 9: Index Types: GIN and GIST
- Lesson 10: How to use different types of Indexes?
- Lesson 11: Index Only Scans
- Lesson 12: How to Find Duplicate Indexes?
- Lesson 13: Unused Indexes
- Course Quiz & Certificate of Completion

You can view [the lessons directly on YouTube](https://www.youtube.com/watch?v=ktae6vhUkKE&t=4s) but you’re eligible for the _Certificate of Completion_ only by [attending via Google Classroom](https://classroom.google.com/c/MTQ4MzczNDExMjM4?cjc=xk5k6fz).

---

<div class="post-metadata">

**Author:** ![Sihar](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/sihar/32/2679_2.png) [@Sihar](https://forums.percona.com/u/Sihar)\
**Post date:** [January 13, 2022, 1:17am UTC](https://forums.percona.com/t/deep-dive-into-postgresql-indexes-free-course-at-percona-university-online/8257/2 "2022-01-13T01:17:54Z")

</div>

Hello, I just finish this course. Can I still get the certificate?

---

<div class="post-metadata">

**Author:** ![daniil.bazhenov](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/daniil.bazhenov/32/62_2.png) [@daniil.bazhenov](https://forums.percona.com/u/daniil.bazhenov)\
**Post date:** [January 13, 2022, 7:26am UTC](https://forums.percona.com/t/deep-dive-into-postgresql-indexes-free-course-at-percona-university-online/8257/3 "2022-01-13T07:26:39Z")

</div>

Hey, great, let’s check it out