bRong Njam

> I am very concerned about the performance of this change. > > Can you please add a golang benchmark test, do datetime_add and compare that of using old code...

@dengn Can't reproduce this bug. I tried the queries above and it can output results.

If a column name is backquoted in DDL, and not all lowercase, it has to be also backquoted in DQL. Or it will be unconditionally converted to lowercase by parser,...

@dengn Is the current behavior acceptable?

Casting from date to timestamp should be normal after applying #4502. Please confirm.

I recall that CAST bigint AS timestamp has the same result as from_unixtime. However it's not discussed.

Has discussed this with @ouyuanning and decided to start it after v0.6 is finished. The refactorization will involve many parts, so too dangerous to touch it now.

Not working on it today

等1.1结束再看

还没看