What would be potential strategies to getting the old data into a new db structure? One strategy we are thinking of is to write some ruby which executes some sql on a per table basis.
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What would be potential strategies to getting the old data into a new db structure? One strategy we are thinking of is to write some ruby which executes some sql on a per table basis.
Since this is a one time task(I am preconceiving things here), you might want to have two databases, one old and one created new, from fresh migration. And write a ruby script to copy data as you want from old to new database.
It will help retain the old database and hence the downtime associated with creating new db and reimporting data from dump. You can use your old code until data is migrated and as soon as data migration to new db completes, update the code and restart the server. Voila! whole lot of data migration with no down time! 🙂
To summarize what I am suggesting: