选择包含案例条件的语句

Question

我想使用案例条件显示我的数据。 现在在我的数据库中：

Id     MoodHappy   MoodSad
1          1          0 

我想检索此值，但我不想显示为1或0。 我想显示如果选择了id 1并且moodhappy等于1则显示happy。

"Select moodHappy, case when moodHappy = 1 then 'Happy' end as moodlvl from Mood"; 

SqlDataReader myReader = cmd.ExecuteReader();
addScholarship userObj = new addScholarship();

while (myReader.Read())
{
    string moody = myReader["moodHappy"].ToString();
    userObj = new addScholarship(moody);
}
myReader.Close();
return userObj;

结果仍显示1并且不满意

Answer 1

    Select moodHappy, case when moodHappy = 1 then 'Happy' else 'Sad' end as moodlvl from Mood

SqlDataReader myReader = cmd.ExecuteReader();
addScholarship userObj = new addScholarship();

while (myReader.Read())
{
    string moody = myReader["moodlvl "].ToString();
    userObj = new addScholarship(moody);
}
myReader.Close();
return userObj;