SQL 声明两列值 return 单个值

SQL Statement two columns value return single value

请建议构建 SQL 语句的最佳方法,非常感谢!

example

试试这个

select id,[date],(case  when refund = 1 then 'R'
                        when voidstatus = 0 then 'C'
                        when  voidstatus = 1 then 'V'
                        else '' end
                ) as [status],grossamt
from    trans