资料库查询错误,条件是 select main.chinesef, unv.chap,unv.sec,unv.id,main.engs,unv.txt,ispar(main.engs,unv.chap,unv.sec),main.id from unv,main where main.engs=unv.engs and main.chineses='' and unv.chap=1 and (unv.sec>=13 and unv.sec<=15) order by unv.id !