MySQL事务ID分配时机问题

原創 DachuanDachuan 2020-07-04 12:36

 

在快照读的时候, 有三个隐藏列: row_id   trx_id  undo_log 指针, 还有delete_flag 

 快照读是通过trx_id 和时间来确定读取哪条undo_log,  这个时间就存在下边的表中

 select * from information_schema.INNODB_TRX;

 

也可以通过这个监控 事务ID生成的时间及先后顺序.

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