随机生成指定范围的日期

在MSSQL中，有些商品会伪造一些评价，但是评价信息可能会集中在一天或几天内，现在需要把日期打散，平均分不到一个日期段内，那么这段代码就有用了。 无 DECLARE @EvId INT,@PiD INT;DECLARE Evaluate CURSOR FOR SELECT EvaluateId,ProductId FROM dbo.Produ

在MSSQL中，有些商品会伪造一些评价，但是评价信息可能会集中在一天或几天内，现在需要把日期打散，平均分不到一个日期段内，那么这段代码就有用了。 <style> .CodeEntity .code_pieces ul.piece_anchor{width:25px;position:absolute;top:25px;left:-30px;z-index:1000;} .CodeEntity .code_pieces本文来源gaodai#ma#com搞@@代~&码网 ul.piece_anchor li{width:25px;background: #efe;margin-bottom:2px;} .CodeEntity .code_pieces ul.piece_anchor li{border-left:3px #40AA63 solid;border-right:3px #efe solid;} .CodeEntity .code_pieces ul.piece_anchor li:hover{border-right:3px #40AA63 solid;border-left:3px #efe solid;} .CodeEntity .code_pieces ul.piece_anchor li a{color: #333;padding: 3px 10px;} .CodeEntity .code_pieces .jump_to_code{visibility:hidden;position:relative;} .CodeEntity .code_pieces .code_piece:hover .jump_to_code{visibility:visible;} .CodeEntity .code_pieces .code_piece:hover .jump_to_code a{text-decoration:none;} .CodeEntity .code_pieces h2 i{float:right;font-style:normal;font-weight:normal;} .CodeEntity .code_pieces h2 i a{font-size:9pt;background: #FFFFFF;color:#00A;padding: 2px 5px;text-decoration:none;} </style> <!—ecms

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DECLARE @EvId INT,@PiD INT;DECLARE Evaluate CURSOR FOR SELECT EvaluateId,ProductId FROM dbo.ProductEvaluate WHERE CreateTime > '2014-10-20 00:00:01';OPEN Evaluate;FETCH NEXT FROM Evaluate INTO @EvId,@PiD;	WHILE @@FETCH_STATUS = 0		BEGIN			DECLARE @BDate datetime, @EDate DATETIME,@PDate DATETIME;			SET @BDate = '20140101'          --下限			SELECT @BDate = CONVERT(varchar(100), CreateTime, 112) FROM dbo.Products WHERE ProductId = @PiD;			SET @EDate = '20141020 23:59:59' --上限			UPDATE dbo.ProductEvaluate SET CreateTime =DATEADD(second,ABS(CHECKSUM(NEWID()))%DATEDIFF(second,@BDate,@Edate),@BDate) WHERE EvaluateId = @EvId ;			FETCH NEXT FROM Evaluate INTO @EvId,@PiD;		ENDCLOSE Evaluate;DEALLOCATE Evaluate;

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