Hello everyone: I want to update our c++ standard from gnu17 to gnu20, then we can use some new feature such as `concept`,`coroutines`,`template lambda function`. Currently our code doesn't need much modification to adapt to the c++20 standard, this is my pull-request https://github.com/apache/incubator-doris/pull/9313. welcome to discuss this.
- [DISCUSS] Update backend c++ standard to gnu20 BiteTheDDDDt
