how to copy data from mysql to postgres?

rubyonrails-talk
1

Hi all,

Is there any gem to copy data from mysql to postgres ?

I search lot but i didn’t get any thing .

Thanks

Fahim

2

You're gonna have to figure that one out yourself by using 2 models and some clever trickery, or you might be able to dump the data and import into postgres if it's generic enough with little effort but I would much rather go the 2 model route even if it takes far more time.

3

Thanks lot for reply.

Few months ago i have studied about one gem which do this work, but i forget the name.

Did any one know about this ?

4

Converting MySQL to PostgreSQL - Wikibooks, open books for an open world describes how to do a dump from mysql and restore to postgres but I don't see any advantage of using a gem over that technique.

Colin

5

use gem taps

6

Thanks lot for reply.

Fahim

7

I really like yaml_db for this. I have only used it for SQLite to MySQL and MySQL to MySQL, but it works smoothly and quickly, and in my case, did not flinch at 2M records in a table.

Walter

8

I would like to add: if you have some custom mapping between the models, you could write a simple rake task. Example: http://myutil.com/2008/8/31/rake-task-transfer-rails-database-mysql-to-postgres

Regards,

Anton