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Quite simple really, in a php/mysql set up, I have to run around 2M point updates on 25M items (where one update covers multiple primary keys), is there a way to pull this off with the same sort of gains as extended inserts?
I’m using unbuffered queries already. Its slow.
NB: Searching came up with nothing, this is on a dev environment so anything goes as there won’t be this issue in prod.. yay for real servers.
One popular way to update a bunch of records is to create a new table, insert lots of records into that table (use extended inserts), and then swap out the old table with the new one.