如圖:(表名叫 ExamStudentScoreInfo)
sql語句:
select * from ExamStudentScoreInfo ess
where not exists(select 1 from ExamStudentScoreInfo where username = ess.username and other2 < ess.other2 and ExamId=ess.ExamId)
如圖:(表名叫 ExamStudentScoreInfo)
sql語句:
select * from ExamStudentScoreInfo ess
where not exists(select 1 from ExamStudentScoreInfo where username = ess.username and other2 < ess.other2 and ExamId=ess.ExamId)
第一步加權限 <uses-permission android:name="android.permission.INTERNET" /> 第二步佈局文件 <Button android:i