SQL Server 基础：Case两种用法

select S#,C#,C#=(
case C#
when 1 then '语文'
when 2 then '数学'
when 3 then '英语'
when 4 then '选修'
end
)
from Sc

select S#,score,score=(
case
when score<60 then '差'
when score between 60 and 80  then '中'
when score between 80 and 90  then '良'
when score between 90 and 100  then '优'
else '缺考'
end
)
from Sc