Question

I have table sql server 2005 that contains 3000 rows Like that

<<ID>>             <<Time>>
5620298     2015-01-05 16:00:00.000 
5620299     2015-01-06 16:00:00.000 
5620300     2015-01-07 16:00:00.000 
5620301     2015-01-08 16:00:00.000 
5620302     2015-01-09 16:00:00.000 
5620303     2015-01-10 16:00:00.000 
5620304     2015-01-11 16:00:00.000 
5620305     2015-01-12 16:00:00.000 
5620306     2015-01-13 16:00:00.000

i wanna to change time with random minutes between 1 to 10 minutes

<<ID>>             <<Time>>
5620298     2015-01-05 16:02:00.000 
5620299     2015-01-06 16:05:00.000 
5620300     2015-01-07 16:01:00.000 
5620301     2015-01-08 16:00:00.000 
5620302     2015-01-09 16:02:00.000 
5620303     2015-01-10 16:07:00.000 
5620304     2015-01-11 16:06:00.000 
5620305     2015-01-12 16:09:00.000 
5620306     2015-01-13 16:00:00.000

How can I do this?

Thanks!

Answer 1

You could:

UPDATE TBL
    SET [TIME] = DATEADD(MINUTE, ABS(CHECKSUM(NEWID()) % 10) + 1, [TIME])

Not very efficient but presumably this is just for testing.

Answer 2

您可以尝试RAND（）

更新TBL SET [TIME] = DATEADD（分钟，ABS（ROUND（RAND（）* 10,0）），[TIME]）

您可能会收到重复的随机数，同意Ale;我们可以使用NEWID（）代替。

update multiple rows with random datetime sql server

2 个答案: