sql查询语句怎么排除重复数据
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select id, name, memo from A where id in (select id from A group by id having count(1) >= 2)
select id, name, memo from A where id in (select id from A group by id having count(1) >= 2)
select id, name, memo from A where id in (select id from A group by id having count(1) >= 2)
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