数据库多字段去重
2021/12/11 2:22:19
本文主要是介绍数据库多字段去重,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
# 查询
SELECT * FROM shopee_finance_data_statistics_v2 a WHERE ( a.get_time, a.realname, a.payout_time ) IN ( SELECT get_time, realname, payout_time FROM shopee_finance_data_statistics_v2 GROUP BY get_time, realname, payout_time HAVING count(*) > 1)
# 删除
DELETE FROM shopee_finance_data_statistics_v2 WHERE id IN ( SELECT id FROM ( SELECT id FROM shopee_finance_data_statistics_v2 a WHERE ( a.get_time, a.realname, a.payout_time ) IN ( SELECT get_time, realname, payout_time FROM shopee_finance_data_statistics_v2 GROUP BY get_time, realname, payout_time HAVING count(*) > 1 ) AND id NOT IN ( SELECT min(id) FROM shopee_finance_data_statistics_v2 GROUP BY get_time, realname, payout_time HAVING count(*) > 1 ) ) AS tmptb )
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