資料庫查詢錯誤，條件是 select main.chinesef, COALESCE( tghg2.chap) as chap,COALESCE( tghg2.sec) as sec,COALESCE( tghg2.id) as id,main.engs,tghg2.txt from tghg2,main where main.engs=COALESCE( tghg2.engs) and main.chineses='' and COALESCE( tghg2.chap)= order by tghg2.id !