# Campaign Understanding Deep Diving with MySQL - HELP URGENT **URL:** \ **Category:** Product Support\ **Created:** [November 8, 2021, 11:46am UTC](https://forum.mautic.org/t/campaign-understanding-deep-diving-with-mysql-help-urgent/21550 "2021-11-08T11:46:48Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![mikew](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mikew/32/5156_2.png) [@mikew](https://forum.mautic.org/u/mikew)\ **Post date:** [November 11, 2021, 12:39pm UTC](https://forum.mautic.org/t/campaign-understanding-deep-diving-with-mysql-help-urgent/21550/5 "2021-11-11T12:39:08Z")
Hi - I seem to have solved this issue. Well I lie - @joeyk seemed to have saved the issue for me by pointing me in the right direction to the required PR: [Fix duplicate entry for key campaign\_rotation by kuzmany · Pull Request #9639 · mautic/mautic · GitHub](https://github.com/mautic/mautic/pull/9639) Now I am not a technical person and was having a chat with @silavapi and she was kind enough to take the time to explain how I go ahead and change the required files inside this PR. So a HUGE shoutout and thank you to both @joeyk & @silavapi. The Mautic community is an amazing place and I am privileged to be part of it and contribute where I can. If anyone needs any direction or help please feel free to hit me up. --- _[View the full topic](https://forum.mautic.org/t/campaign-understanding-deep-diving-with-mysql-help-urgent/21550)._