资料库查询错误,条件是 select main.chinesef, COALESCE( unv.chap) as chap,COALESCE( unv.sec) as sec,COALESCE( unv.id) as id,main.engs,unv.txt,ispar(main.engs,unv.chap,unv.sec),main.id from unv,main where main.engs=COALESCE( unv.engs) and main.chineses='' and COALESCE( unv.chap)=2 and COALESCE( unv.sec)=4 order by unv.id !