资料库查询错误，条件是 select afmain.chinesef, unv.chap,unv.sec,unv.id,afmain.engs,unv.txt,ispar(afmain.engs,unv.chap,unv.sec),afmain.id from unv,afmain where afmain.engs=unv.engs and afmain.chineses='' and unv.chap= order by unv.id !