declare@whichWeekDayint--周几(值域:[1,7],表示周一到周天)set@whichWeekDay=1declare@firstDayOfMonthdatetimeset@firstDayOfMonth=DATEADD(DAY,1, EOMONTH(@dateNow,-1)) printCAST(@firstDayOfMonth+(7+@whichWeekDay+1-datepart(weekday,@firstDayOfMonth))%7ASDATE) 输出: 2021-07-05 19、上个月...
Select*FromTableWhere(CreateDate<=DATEADD(YEAR,-1,GETDATE()))Select*FromTableWhere(CreateDate<=DATEADD(MONTH,-1,GETDATE()))Select*FromTableWhere(CreateDate<=DATEADD(DAY,-1,GETDATE()))
DD day of month (01-31)D day of the week, Sunday(1) to Saturday(7)ID ISO day of the week, Monday(1) to Sunday(7)W week of month (1-5) (The first week starts on the first day of the month.)WW week number of year (1-53) (The first week starts on the first...
SET @DayChar = CAST(DAY(GETDATE()) AS VarChar(2)) --自动补齐月份到2位 IF LEN(@MonthChar) = 1 SET @MonthChar = '0'+@MonthChar IF LEN(@DayChar) = 1 SET @DayChar = '0' + @DayChar --生成日期字符串 SET @DateOut = @MonthChar + @DayChar + CAST(YEAR(GETDATE()) AS Char...
*/*程序清单 如下:*/USE adventureworks SELECT DATEDIFF(day,hiredate,getdate()AS diffdays FROM humanresources.employee/* 从 GETDAT函数返回的日期中提取 月份名。*/* 程序清单如下:*/SELECT 24、 DATENAME(month,getdate()ASMonth Name/*此示例输出AdventureWorks数据库中订单的时间范围的列表。此时间 范围为...
Month Posted列显示了每个站点被查询的月份。函数DATEPART()的返回值是一个整数。你可以用这个函数抽取日期的各个不同部分,如下表所示。 日期的各部分及其简写 日期部分 简写 值 year yy 1753--9999 quarter qq 1--4 month mm 1--12 day of year dy 1--366 ...
day,day_hour,day_minute,day_second,dayofmonth,dayofweek,dayofyear,dec,decimal,default,delayed,delay_key_write,delete,desc,describe,distinct,distinctrow,double,drop,end,else,escape,escaped,enclosed,enum,explain,exists,fields,file,first,float,float4,float8,flush,foreign,from,for,full,function,global,...
SET @MonthChar = CAST(MONTH(GETDATE()) AS VarChar(2)) SET @DayChar = CAST(DAY(GETDATE()) AS VarChar(2)) --自动补齐月份到2位 IF LEN(@MonthChar) = 1 SET @MonthChar = '0'+@MonthChar IF LEN(@DayChar) = 1 SET @DayChar = '0' + @DayChar ...
自SQL Server2005开始引入了一个T-SQL独有的表运算符-PIVOT,它可以对某个源表或表表达式进行操作、透视数据,再返回一个结果表。 PIVOT运算符同样涉及前面介绍的三个逻辑处理阶段(分组、扩展和聚合)以及同样的透视转换元素,但使用的是不同的、SQL Server原生的语法。
If a client wanted a note to apply to the first of every month you would be duplicating the row (including note) 12 times? Alternatively, if you've already decided that your note bitmap idea is the correct way, then consider storing the day numbers instead of a bitmap, so ...