Hello, I conducted debugging, and the result is as you said. I may need some time to think about how to modify this part of the code. Thank you very much for your suggestion.
Best regards， Cancai Cai Benchao Li <libenc...@apache.org> 于2024年3月11日周一 21:09写道： > I didn't go deep into CALCITE-6259, so I might not able to give you > the precise solution / code. Generally, you can add your operator > table in front of the standard operator table, or just leave the > standard operator table out, that would meet the requirement that you > want to "override" a standard operator. > > Cancai Cai <caic68...@gmail.com> 于2024年3月10日周日 17:43写道： > > > > It seems like I can't find a suitable way to solve this problem, can you > > give me some suggestions? > > > > Best regards, > > Cancai Cai > > > > Benchao Li <libenc...@apache.org> 于2024年3月5日周二 19:26写道： > > > > > It's not a class loading problem, it's an operator lookup mechanism, > > > which is a by design behavior, you can see details here[1]. If there > > > are multiple candidates in the result of operator lookup, the first > > > one will be returned. > > > > > > [1] > > > > https://github.com/apache/calcite/blob/d64ee0037db7abacdfcd4e774072f5e3fb8f2998/core/src/main/java/org/apache/calcite/sql/SqlUtil.java#L494-L517 > > > > > > Cancai Cai <caic68...@gmail.com> 于2024年3月5日周二 16:53写道： > > > > > > > > Hello, everyone in the calcite community. > > > > > > > > I'm not sure if I should ask this question. > > > > > > > > In the process of fixing CALCITE-6259 > > > > <https://issues.apache.org/jira/browse/CALCITE-6259>, I found that I > > > > defined a log10_MS function in SqlLibraryOperators to simulate the > > > behavior > > > > of the log function in mysql, but the > ReturnTypes.DOUBLE_FORCE_NULLABLE I > > > > set was not Effective, its return value still complies with the > > > ReturnTypes > > > > of the LOG10 function in SqlStdOperatorTable. It seems to be a class > > > > loading conflict. I tried to modify sqlkind, but it didn’t take > effect. > > > Is > > > > there any good way? > > > > > > > > Thank you all. > > > > > > > > Best wishes. > > > > Cancai Cai > > > > > > > > > > > > -- > > > > > > Best, > > > Benchao Li > > > > > > > -- > > Best, > Benchao Li >
