Question

当我运行此查询时;

UPDATE dbo.Account
SET new_AccountTypeIdName  =  IIF(new_Existing = 1 , 'Existing','Potential')
Where new_AccountTypeIdName = 'Member' 
AND new_Existing IN (0,1)

它只是将'new_AccountTypeIdName ='Member'更改为'Existing'，无论'new_existing = 1还是0'。

有人能指出我正确的方向吗？即时通讯使用sql server 2012

由于

Answer 1

将您的查询拆分为2个简单：

UPDATE dbo.Account
  SET new_AccountTypeIdName  =  'Existing'
    Where new_AccountTypeIdName = 'Member' AND new_Existing = 1

UPDATE dbo.Account
  SET new_AccountTypeIdName  =  'Potential'
    Where new_AccountTypeIdName = 'Member' AND new_Existing = 0

Answer 2

尝试此查询

UPDATE dbo.Account
SET new_AccountTypeIdName  =  case when new_Existing = 1 then 'Existing' else 'Potential' end
Where new_AccountTypeIdName = 'Member' 
AND new_Existing IN (0,1)

SQL - UPDATE不起作用？

2 个答案: