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Update ticdc-faq.md
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wk989898 authored Nov 11, 2024
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Expand Up @@ -326,4 +326,4 @@ TiDB 有事务超时的机制,当事务运行超过 [`max-txn-ttl`](/tidb-conf

## TiCDC 同步数据到 kafka 或存储服务时,DML 中的生成列会发生什么行为?

生成列包括存储生成列和虚拟生成列,TiCDC 会忽略虚拟生成列,只把存储生成列复制到下游。当存储生成列复制到 Kafka 或存储服务等下游后,再写入到MySQL 时会出现报错`Error 3105 (HY000): The value specified for generated column 'xx' in table 'xxx' is not allowed.`
生成列包括存储生成列和虚拟生成列,TiCDC 会忽略虚拟生成列,只把存储生成列复制到下游。当存储生成列复制到 Kafka 或存储服务等下游后,再写入到 MySQL 时会出现报错`Error 3105 (HY000): The value specified for generated column 'xx' in table 'xxx' is not allowed.`

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