don't know about whole orderbook, but nitrous db has this column (not included in standard export), and it's very handy for backtesting - strategy chooses more correct price on buy/sell actions.

I see only one problem with the bitcoincharts data - there is no bid/ask column
In other ways data seems to be enough accurate.

Big thanks, Nitrous!

Hi!

Thanks for a great tool. But I can't make it work properly. I started it several times, and always I get the same error, and my dump always the same size - 107 mb. I'm not tried to continue updating because it looks like it's corrupted.
Is there any way to fix it?