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如何编写SQL查询以检测和处理重复数据？2025-02-08 19:15:54

要查询重复数据，可以使用以下SQL语句：SELECT column1, column2, COUNT(*) FROM table_name GROUP BY column1, column2 HAVING COUNT(*) > 1;

作者:adminzy | 分类:4 | 浏览:4 | 评论:0

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