oracle 违反主键id错误，查看表中是否有重复的ID列的值，并删除重复数据

查询是否有重复数据：

select DEV_BRU_A（表的主键列） from u_hx_adm_sub_bureau（表名） group by DEV_BRU_A having count(DEV_BRU_A) > 1;

注：其中的‘DEV_BRU_A’是表的主键列，‘u_hx_adm_sub_bureau’为表名。

 

删除重复数据：

delete from u_hx_adm_sub_bureau where DEV_BRU_A in

(select DEV_BRU_A from u_hx_adm_sub_bureau group by DEV_BRU_A having count(DEV_BRU_A) > 1)

and rowid not in

(select min(rowid) from u_hx_adm_sub_bureau  group by DEV_BRU_A having count(DEV_BRU_A) > 1);