According to https://news.ycombinator.com/item?id=39447465 https://news.ycombinator.com/item?id=39447465: > I was doing historical evaluation for a few sites,

According to https://news.ycombinator.com/item?id=39447465 https://news.ycombinator.com/item?id=39447465: > I was doing historical evaluation for a few sites, so I was running a query for each month going back to 2016 for each site. I've done this before with no real issues, and if I knew the charges were rapidly exploding I'd have halted the script immediately - but instead it ran for 2 hours and the first notice I got was the CC charge. So looks like a loop of ((6 * 12) + 2) * #sites iterations with a full table scan every time.