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mysql - oracle的数据表的ROWID

Oracle的数据表有一个重要的字段ROWID,这个字段有什么用?

其他的数据库有没有这个字段,据我了解MySQL是没有的

巴扎黑巴扎黑2765 days ago395

reply all(1)I'll reply

  • 迷茫

    迷茫2017-04-17 13:15:47

    rowid is the unique identifier of each record. It can be simply and roughly understood as a hidden unique key, which is used for index positioning and management queries, just like a house number address. MySQL also has it, called _rowid, which is available in almost any relational database.

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