今天在工作中碰到了个问题,统计本周流量时,使用DateDiff函数由于w与week混淆产生统计结果出现错误参数 interval的设定值如下:值缩 写(Sql Server)说明YearYy年 1753 ~ 9999QuarterQq季 1 ~ 4MonthMm或m月1 ~ 12Day of yea...
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数据库 时间:
2014-08-01 22:58:02
阅读次数:
477
Greedy, Greedy, Greedy.. It is all about maximum interval update.One trick is, we start looping over each element from the one nearest to end to farth...
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其他好文 时间:
2014-08-01 13:32:21
阅读次数:
283
memcache扩展版本 3.0.8一. retry_interval$retry_interval 某个rpc服务器端失败后故障转移的时间,retry_interval的时间内,该节点会被一直标记为不可用,隔离掉,为小于0的数一直隔离。int mmc_server_valid(mmc_t *mmc...
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Web程序 时间:
2014-07-31 20:27:37
阅读次数:
269
Description
Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A <= B <= 1,000,000), which includes both times ...
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其他好文 时间:
2014-07-31 09:49:36
阅读次数:
211
//文字在窗体上水平来回移动procedure TForm1.Timer1Timer(Sender: TObject);{ Timer1.Interval:=10;}beginif label1.Left+label1.Width>0 thenlabel1.Left:=label1.Left-2el...
分类:
移动开发 时间:
2014-07-29 21:46:52
阅读次数:
228
1、DATE_ADD(curdate(),interval -30 day)? 表时间加,获得当前日期30天之前的时间。 date_sub(now(),interval 1 day) 表示时间减 2、unix_timestamp() 时间转换 3、cast() 强制转换。例子:select cast(‘11...
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数据库 时间:
2014-07-29 16:16:49
阅读次数:
266
题目:Given a collection of intervals, merge all overlapping intervals.For example,Given [1,3],[2,6],[8,10],[15,18],return [1,6],[8,10],[15,18].题解:这道题主要....
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编程语言 时间:
2014-07-28 11:35:20
阅读次数:
239
题目:Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were ini....
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编程语言 时间:
2014-07-28 11:35:10
阅读次数:
293
Insert IntervalGiven a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals...
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其他好文 时间:
2014-07-26 01:35:07
阅读次数:
246
Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were initially...
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其他好文 时间:
2014-07-26 00:37:46
阅读次数:
237