sundyli

We can add this data directory into `.gitignore`

> I found that the calculation results of sql5 in the cluster of the mac system are very different, It's optional ci, we will take deep look into cc @zhang2014...

> Can sql5 be skipped to let this pr end？ Yes, you can uncomment the test.

tasks: - [x] support cast '2022-02-01T00:00:00+08:00' into timestamp

> I think that we should modify the function: Yes. We should try best effort to parse from string to Date/DateTime

> Does 'commonly used columns' refer to a system table like system.numbers No, the above SQL is just a simple case. Now `AggregateDistinctState` used `Vec` to represent the state, this...

@Kikkon Hello, how is this going? Do you need some help?

> I wonder that if implementing all types is a bit ugly You do not need implementing all types. From zero to one I suggest to cover primitive types &...

It can be addressed in #6547

> do you mean we can add it now in common-expression first? Yes, we can add it now, it may take some time to make it to production.