Question

如何在此声明中使用GROUP BY？

UPDATE LoanMaster 
SET LeadsID1 = NEXT VALUE FOR LM
WHERE PrdAcctId IS NOT NULL
GROUP BY LBrCode, CustNo

Answer 1

我将推测您需要LBrCode和CustNo对的唯一ID。你可以这样做：

with nums as (
      SELECT t.*, (NEXT VALUE FOR LM) as newval
      FROM (SELECT DISTINCT LBrCode, CustNo
            FROM LoanMaster
            WHERE PrdAcctId IS NOT NULL
           ) t
     )
update lm
    set LeadsId1 = newval
    from LoanMaster lm JOIN
         nums
         on lm.LBrCode = nums.LBrCode and lm.CustNo = nums.CustNo;

注意：尽管这应该有效，但您应该创建一个Leads表，每个值一行。看起来你想要一个外键关系，你应该有一个关系的实体。

SQL Server Group By在UPDATE语句中

1 个答案: