SQL Server为每一行设置一个随机数

使用：

1. 查询：

select *, ABS(CHECKSUM(NewId())) % 20 + 65 as new_score from training_score;

2. 修改：

update training_score set score = ABS(CHECKSUM(NewId())) % 20 + 65 where score is null;

参考：

1. How do I generate random number for each row in a TSQL Select?