I've asked a lot of questions recently, and I hope I won't cause too much trouble to the community.
On 2024/03/14 10:32:09 Cancai Cai wrote: > Hello, everyone in the calcite community. > > Recently, I have been adapting the behavior of functions in different > dialects to the calcite community. At first, I used the method in > CALCITE-5831 <https://issues.apache.org/jira/browse/CALCITE-5831>[1], but > later I discovered that this The method is not very suitable. A function > may have multiple behaviors in different dialects (for example, the > behaviors of the log function in mysql, pg, and bigquery are somewhat > different). We may need to add some specific methods and > SqlLibraryOperators to these behaviors respectively. name. > > In CALCITE-6325 <https://issues.apache.org/jira/browse/CALCITE-6325>[2], > tanclary proposed that @LibraryAnnotations can be used to optimize (I hope > I didn’t understand). Julian also said before that it can be implemented > in the form of flag bits (but I don’t know how to use the database The type > flag is passed into Sqlfunctions) > > I would like to ask everyone what you think? > > Seriously, adaptation functions are not fun, but I want to help the > community improve this problem. > > Best wishes, > Cancai Cai > > [1] :https://issues.apache.org/jira/browse/CALCITE-5831 > [2]: https://issues.apache.org/jira/browse/CALCITE-6325 >
