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Editorial Team
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Asked: 2026-05-22T14:38:02+00:00

I developed a ruby on rails 3 web app, and i had originally depended

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I developed a ruby on rails 3 web app, and i had originally depended on a sqlite3 database that was locally stored in my computer before deploying it. I stored certain information in the sessions to get certain part of my web app to work.

However after deploying, i decided to use a mysql2 database from xeround.com and my website broke down. At first I had gotten an error message saying that i did not have a sessions table in the database. So I created a sessions table. And now it says 

ActiveRecord::StatementInvalid in ClientController#index

Mysql2::Error: Unknown column 'sessions.session_id' in 'where clause': SELECT  `sessions`.* FROM `sessions` WHERE `sessions`.`session_id` = '................' LIMIT 1

Would i have to create the appropriate columns manually in the new sessions table that I made in the mysql2 database? Or is there another way to get around it?

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1 Answer

  1. Editorial Team

    What seems to be missing is session_id do check in your table sessions does it have column named session_id in it? if it is not there then create it through a migration. According to me, you should not do anything manually cause, in future if you wants to make some changes or rollback the tables you might face some issues.

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