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In Ruby on Rails 5.1.0, generated virtual column support was added for MySQL and MariaDB. Using generated and stored columns can leverage heavy calculations to the SQL side.

Home Page: https://www.driftingruby.com/episodes/virtual-columns-in-mysql

Ruby 68.93% JavaScript 2.74% CoffeeScript 0.50% CSS 10.41% HTML 17.42%
ruby ruby-on-rails mysql virtual-column

087-virtual-columns-in-mysql's Introduction

README

This README would normally document whatever steps are necessary to get the application up and running.

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  • Ruby version

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  • Database initialization

  • How to run the test suite

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087-virtual-columns-in-mysql's Issues

Question: Add virtual column in migration

Great feature and explanation. Do you know by chance how to alter a table after its creation in order to add a virtual column afterwards? Explicitely I need to add a name column to a devise user model where I only have first_name + last_name columns...

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