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I need to add a column to my current table.
This table is used a lot during the day and night. i found out i need to alter using the alter command found here
http://dev.mysql.com/doc/refman/5.1/en/alter-table.html
I tested it on a development server.
i took about 2 hours to complete. Now I want to execute this on the production server?
will this stop my website?
Why not display a message on the site saying you will perform maintenance from midnight UTC time January 7 2012.
This way, you won’t break any data, you will not get any mysql errors. you execute your ALTER and you start the site again once its completed (don’t forget your code to make sure you have the right field etc..). Easy solution.
Stackoverflow does it, why not yours?