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话不多说，请看下面</div>
//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));</div>
//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</div>
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