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 rid,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='诗' and COALESCE( unv.chap)=19 and COALESCE( unv.sec)=10f. order by rid !