# Rails Migration Live w/mysql

**URL:** <https://www.ruby-forum.com/t/rails-migration-live-w-mysql/184008>\
**Category:** Rails\
**Created:** [February 23, 2010, 8:19pm UTC](https://www.ruby-forum.com/t/rails-migration-live-w-mysql/184008 "2010-02-23T20:19:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cuspendlove](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/f9ae1b/32.png) [@cuspendlove](https://www.ruby-forum.com/u/cuspendlove)\
**Post date:** [February 23, 2010, 8:19pm UTC](https://www.ruby-forum.com/t/rails-migration-live-w-mysql/184008/1 "2010-02-23T20:19:46Z")

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Hi - I’m wondering what people are doing about large tables and adding  
columns / dropping columns on a site that cannot be taken down.