2.select d.id,d.outer_code,row_number() over(partition by outer_code order by outer_code) row_flag from dict_depts_sour

1.select d.id,d.outer_code from dict_depts_source d order by outer_code(查看重復(fù)數(shù)據(jù))

2.select d.id,d.outer_code,row_number() over(partition by outer_code order by outer_code) row_flag from dict_depts_source d(標(biāo)識(shí)重復(fù)數(shù)據(jù))

3.delete from dict_depts_source where id in(

select id from(select d.id,d.outer_code,row_number() over(partition by outer_code order by outer_code) row_flag from dict_depts_source d)t

where t.row_flag > 1)(刪除重復(fù)數(shù)據(jù))

4.select d.id,d.outer_code,row_number() over(partition by outer_code order by outer_code) row_flag from dict_depts_source d(檢查刪除效果)

，

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