可以在一个事务中调用 CreateInBatches 吗？

[eyjian]

根据文档说明，批量插入方法 CreateInBatches 会开启一个事务，文档也说 gorm 支持嵌套事务，而 MySQL 官方文档则明确不支持嵌套事务，但支持 SavePoint，看到 gorm 的实现有用到 SavePoint 。请问：

1、可以在一个事务中调用吗 CreateInBatches ？

2、CreateInBatches 成功后，但外层事务还未提交，其结果是否对外可见了？

3、外层事务回滚了，CreateInBatches 的结果也会被回滚吗？

一个理想的实现是：CreateInBatches 检测是否已经在事务中，如果已经在事务中，则不开启一个新的事务，这样就只有一个事务，SavePoint 也不需要了，不知道实际实现怎样的。

[github-actions]

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