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MySQL 初始查询器查询无知。更改表格 ID 值,以便它再次将所有事物排列为数字顺序
原标题:MySQL beginner query ignorance. Changing the table id value so it places everything once again in numerical order
    id  name            age
    2   Sandy Smith     21
    4   Alie Smith      19
    5   James Smith     11

你好,我刚开始编程, 今年夏天在空闲时间正在网上看辅导。我知道这是一个简单的问题,但我在网上搜索了,我找不到我需要的东西。

我删除了一行,所以现在我不再有"ID 2 3 4 5"了。我带着2 4 5"离开了。我不知道MySQL的查询, 要把一个谎言铁匠作为# 3, James 史密斯作为# 4。请帮助我完成这个查询。 谢谢。

最佳回答

如果您仍然有原有的插入语句, 或者可以重新创建这些语句, 您可以使用 TRUNCATE Table [tablename here] , 然后重新插入数据。 如果您试图将表格恢复到已知状态, 可能会很方便 。

问题回答

您不需要。主键的点是 UNIQUE。 ID 字段将自动自动递增。 唯一可以这样做的方法就是从 ID 列中删除主键属性, 这样您就可以手动控制它, 插入正确的 id s, 然后打开密钥。 读取数据库的正统化, 它会更有意义 。





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