SQL_类型转换
时间:2022-03-14 00:35
select *, english2= case when english IS NULL then ‘暂无成绩‘ when english IS NOT NULL then cast(english as Nvarchar(20)) end from Students
时间:2022-03-14 00:35
select *, english2= case when english IS NULL then ‘暂无成绩‘ when english IS NOT NULL then cast(english as Nvarchar(20)) end from Students