Gan Ziheng

> The api of oracle needs a txn struct, I just don't want to break the api. And the conflict check of oracle needs write keys hash of transaction which...

> What does level base mean? Target for L0 to compact to or else? Yes, the target level into which level 0 will merge its data.

> I think we can extend next_range with this_range I think that's ok. By the way, I think this problem only happens when ingesting files, and will not appear in...

> 经过研究发现，是因为CommitInfo default的时候 next_txn_ts 总是为0导致的 每次启动进程都是从version 0开始设置 `next_txn_ts` should be updated when opening the DB, but the logic has not been added yet.

> The next_txn_ts won't update when reopening db? @GanZiheng Yes... I remember it is set to 1.

> Generally done. You can have a look. @GanZiheng > > BTW, the `rustfmt.toml` use many flags that are only available in nightly channel while CI use stable channel. So...

> Does CI often failed in nightly channel? I saw that all tests (except the first one) run in nightly channel for the support of sanitizer... Specifically, failed due to...

How about WeChat pay (doge

> @GanZiheng give it a try ! https://github.com/Veeupup/naive-query-engine/pull/49 @Veeupup PTAL, is this pretty enough?