问题设置一个计算列

Question

我想设置这个关口，但我得到一个错误：

FirstName + (CASE WHEN LEN(FirstName + LastName) > 0 THEN ' ' ELSE '') + LastName 

Answer 1

您应该关闭CASE与END也是，我意见，下面的值会更好：

FirstName + (CASE WHEN LEN(FirstName) > 0 AND LEN(LastName) > 0 THEN ' ' ELSE '' END) + LastName 

Answer 2

FirstName + (CASE WHEN LEN(FirstName + LastName) > 0 THEN ' ' ELSE '' end) + LastName 

缺少结束