MySql - WAMP - Huge Table is very slow (20 million rows)

Question

So I posted this! yesterday and got a perfect answer, which required running this code first: ALTER TABLE mytable AUTO_INCREMENT=10000001;

I ran it several times, but r

Answer 1

It's going to take a long time because you've only got 2GB RAM and 6GB of data/indexes and it's going to force a ton of swapping in/out between RAM and disk. There's not much you can do about that, though.

You could try running this in batches.

Create a separate empty table with the auto_increment column included in it. Then insert your records a certain amount at a time (say, 1 state at a time). That might help it go faster since you should be able to handle those smaller datasets completely in memory instead of paging to disk.

You'll probably get a lot better responses for this if it's on dba.stackexchange.com also.