> We’d want to support it in Babel but not the core parser. I've come across that differentiation a few times when reading earlier e-mails. Is there any resource explaining the difference between these two parsers, what they are used for, and which sort of change should be done in which?
Thanks a lot, --Gunnar Am Fr., 7. Jan. 2022 um 20:58 Uhr schrieb Julian Hyde < [email protected]>: > It seems analogous to the Postgres-style ‘::’ cast operator. We’d want to > support it in Babel but not the core parser. Can you log a JIRA case > analogous to https://issues.apache.org/jira/browse/CALCITE-2843 < > https://issues.apache.org/jira/browse/CALCITE-2843>. > > > On Jan 7, 2022, at 3:06 AM, 徐仁和 <[email protected]> wrote: > > > > Hi calcite community. > > > > In my case, we need calcite's parser support operator '<=>' of mysql. > > > > Link: > > > https://dev.mysql.com/doc/refman/8.0/en/comparison-operators.html#operator_equal-to > > > > I debug it, I find I need to modify the Parser.jj in calcite, to define a > > new token for '<=>'. > > > > So, could I expand the Parser.jj of calcite, and support this new > operator. > > > > Best, > > XuRenhe > >
