Gbase中刪除1對多的記錄

刪除1對多的記錄，只留下了每一條

-------刪除1對多的記錄
delete a from bsid_branchname1 a,(select * from bsid_branchname1 group by bsid   having count(branchname) > 1)b
where a.bsid=b.bsid
and a.branchname<>b.branchname