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