資料庫查詢錯誤，條件是 select submain.chinesef, unv.chap,unv.sec,unv.id,submain.engs,unv.txt,ispar(submain.engs,unv.chap,unv.sec),submain.id from unv,submain where submain.engs=unv.engs and submain.chineses='' and unv.chap= and unv.sec=4 order by unv.id !