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oracle怎样给已有表添加主键

在Oracle数据库中,给已有表添加主键是一个非常常见的操作。主键在数据库中扮演着非常重要的角色,它能够保证数据的唯一性和完整性,同时也能提高数据的检索速度。学会如何给已有表添加主键是非常有必要的。本文将为您详细介绍在Oracle数据库中如...

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