SQL+C#实现获得当前月的第一天与最后一天

话不多说，请看下面

//c# 代码
int year = datetime.now.year;
int month = datetime.now.month;
datetime firstdayofthismonth = new datetime(year, month, 1);
datetime lastdayofthismonth = new datetime(year, month, datetime.daysinmonth(year, month));

//sql代码
declare @now datetime
declare @fistdayofthismonth datetime 
declare @lastdayofthismonth datetime
set @now = getdate()
set @fistdayofthismonth = @now - day(@now) + 1 
set @lastdayofthismonth = dateadd(month, 1, @now - day(@now) + 1) - 1
select @fistdayofthismonth
select @lastdayofthismonth

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