Comments (5)
hanchuanchuan
commented on June 8, 2024
见文档说明. ddl的表结构暂不支持回滚的(这个回滚的意义不太大).
--ddl 解析ddl，仅支持正向解析。可选。默认false。
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guolong123
commented on June 8, 2024
在升级的时候，会有些结构变动语句，给表加字段啥的。如果没有这些语句的回滚，也有可能造成回滚后业务数据丢失啊，为啥会意义不大呢？
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hanchuanchuan
commented on June 8, 2024
DDL的回滚只能是逻辑性的.
比如说你删除了一个字段, 数据肯定是找不回来的. 这个数据没有记录binlog.
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guolong123
commented on June 8, 2024
了解了，要回滚必须要知道sql执行前的状态。
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hanchuanchuan
commented on June 8, 2024
是的，所以binlog解析通常仅用于DML操作。
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