从实际出发，前提是要深入了解实际情况。
In the case where data needs to be deleted from ClickHouse e.g., for compliance or deduplication reasons, users can also utilize lightweight deletes instead of mutations. These take the form of a DELETE statement which accepts WHERE clause to filter rows. This marks rows as deleted only. These marks will be used to filter rows out at query time and will be removed when parts are merged.，推荐阅读wps获取更多信息
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Фото: Рамиль Ситдиков / РИА Новости。WhatsApp Web 網頁版登入对此有专业解读
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