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How do I update an entire table column
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How do I update an entire table column
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I have a Micropost table with columns user_id and sender_id (both integers). I've just added the sender_id column and by default it's value is nil for existing table rows. As a one time thing I want all of the user_id values to be copied and pasted into the sender_id column for the rows already existing. some sort of migration required?
You can do this from rails console.
Micropost.update_all("sender_id = user_id")
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