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=2 and ( (unv.sec>=1 and unv.sec<=3) or (unv.sec>=14 and unv.sec<=17) ) order by unv.id !