目录直接update的弊端方法一;replace into方法二:insert into [table] values… on duplicate key update方法三:创建临时表总结直接update的弊端
I have a bitmap and would like to return an iterator of positions of set bits. Right now I just walk the whole bitmap and if bit is set, then I pr开发者_开发问答ovide next position. I believe this cou