SQL Server Update 一個列的數據為隨機數

原文：https://www.cnblogs.com/Bin-x/p/4153595.html

1、SQL如下：

SELECT  convert(varchar(50),360+ABS(CHECKSUM(NEWID()))%7+1) +'.'+ convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)+ convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)+ convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)



UPDATE dbo.tb_SensorRecord 
SET NewValue1=(
	convert(varchar(50),310+ABS(CHECKSUM(NEWID()))%7+1) + '.' + convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)+ convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)+ convert(varchar(50),ABS(CHECKSUM(NEWID()))%7+1)
)
WHERE GetTime>='2019-11-30' AND GetTime<='2020-02-01' AND Code='625169'



SELECT NewValue1 FROM dbo.tb_SensorRecord WHERE GetTime>='2019-11-30' AND GetTime<='2020-02-01' AND Code='625169' ORDER BY ID ASC

2、效果如圖：

3、還有一個測試的SQL，不過在Update語句中不能用

--隨機三位小數
select cast(ceiling(rand()*1000)/1000 as decimal(18,3))

--隨機一位數
SELECT ROUND(((10 - 1 -1) * RAND() + 1), 0)