---單字段去重復記錄
select * from fbs_corp_budget b WHERE b.corp_id IN ( SELECT d.corp_id FROM fbs_corp_budget d GROUP BY d.corp_id HAVING COUNT(d.corp_id) > 1)
AND ROWID NOT IN (SELECT MIN(ROWID) FROM fbs_corp_budget c GROUP BY c.corp_id HAVING COUNT(*) > 1);
---多字段去重
delete from 學生表 a where (a.學號,a.姓名,a.課程編號,a.課程分數,a.課程名稱)
in (select a.學號,a.姓名,a.課程編號,a.課程分數,a.課程名稱 from 學生表 group by a.學號,a.姓名,a.課程編號,a.課程分數,a.課程名稱 having count(*) > 1)
and rowid not in (select min(rowid) from 表 group by a.學號,a.姓名,a.課程編號,a.課程分數,a.課程名稱 having count(*)>1)