06 2019 档案
摘要:链接:https://bbs.csdn.net/topics/390932211?page=1
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摘要:1、left() LEFT (<character_expression>, <integer_expression>) 返回character_expression 左起 integer_expression 个字符。 结果: 2.charindex() CHARINDEX (<’substrin
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摘要:select dateadd(dd,num,@begintime) FROM (SELECT ROW_NUMBER() OVER (ORDER BY ID)-1 AS num FROM sysobjects) KK where dateadd(dd,num,@begintime) <=@endtim
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摘要:List<T,T>的排序: List<T>的排序: 倒排 正排
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摘要:string t1 = "2019-1-1 00:00:00";string t2 = "2019-1-2 18:00:00";DateTime t11 = DateTime.Parse(t1);DateTime t22 = DateTime.Parse(t2); 时间相差多少: Double sp
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