我一直在努力解决这个问题，希望有人能帮助我。我有两张table，第一张table是表名:OnlineTestOnlineTestIdcategorysubcategory1EnglishSpelling2EnglishGrammar3EnglishAntonyms4EnglishSynonyms第二张表是表名:UserStatusIduserIdstatusonlineTestId11Finished121NotFinished232NotFinished142Finished353NotFinished4结果OnlineTestIduserIdstatus11Finished21No