Rails 3 batch update

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Upload image. Submit Preview Dismiss. Hide child comments as well Confirm. Building a Rails app backbone Rhys Malyon - Nov 12 ' Answered By: MothOnMars.

Answered By: dlackty. Answered By: pdobb. Answered By: Faisal. Answered By: Charlie Tran. Update or create nested jsonb value using single update command. What is the best default transaction isolation level for an ERP, if any? Learn more. Ask Question. Asked 7 years, 8 months ago. Active 4 years ago. Viewed 27k times. First, I tried: Foo.

This is what I tried next: Foo. Same question as Marian, I don't get your reasoning. If you do Foo. MichaelSzyndel, I am performing the update in batches to avoid locking my table while updating hundreds of thousands of records. Add a comment. Active Oldest Votes.

For example, if Foo. This only works if you're iterating over the entire table. This won't work if you're trying to update a hundred million rows of a table that has half a billion records. If you don't care for the callbacks, then try: Foo.

Faisal Faisal 19k 4 4 gold badges 28 28 silver badges 32 32 bronze badges. Naremy no. As it iterates over the batch, it keeps updating the id to the latest id and then issues a new call.