TSQL foreach query

Question

我想为我的数据库中的所有人生成一个随机SSN，但是我这样做有点困难。

这是我使用的查询：

UPDATE tblTenant SET SSNO = (
    SELECT 
     CAST(A.A as CHAR(1)) + CAST(A.B as CHAR(1)) + CAST(A.C as CHAR(1)) + '-' + 
     CAST(A.D as CHAR(1)) + CAST(A.E as CHAR(1)) + '-' + 
     CAST(A.F as CHAR(1)) + CAST(A.G as CHAR(1)) + CAST(A.H as CHAR(1))+ CAST(A.I as CHAR(1)) 
    FROM 
     (SELECT CAST(RAND() * 10 AS TINYINT) as A, CAST(RAND() * 10 AS TINYINT) as B, CAST(RAND() * 10 AS TINYINT) as C, CAST(RAND() * 10 AS TINYINT) as D, CAST(RAND() * 10 AS TINYINT) as E, CAST(RAND() * 10 AS TINYINT) as F, CAST(RAND() * 10 AS TINYINT) as G, CAST(RAND() * 10 AS TINYINT) as H, CAST(RAND() * 10 AS TINYINT) as I) as A 
    ); 

它正常工作产生随机SSN，但它只能执行一次，即每个人都得到相同的SSN。

我该如何让每个用户都能生成一个新的随机SSN？

Answer 1

看一看at this这之前的SO回答：How do I generate random number for each row in a TSQL Select?

Answer 2

试试这个：

UPDATE tblTenant 
SET SSNO = RIGHT('000'+CAST(ABS((CAST(NEWID() AS VARBINARY))%(1000)) AS VARCHAR(3)),3)+'-'+ 
     RIGHT('00'+CAST(ABS((CAST(NEWID() AS VARBINARY))%(100)) AS VARCHAR(2)),2)+'-'+ 
     RIGHT('0000'+CAST(ABS((CAST(NEWID() AS VARBINARY))%(10000)) AS VARCHAR(4)),4)