Calcite doesn’t currently have that capability. The mapping between functions in Calcite and functions in a JDBC back-end is currently all hard-coded in the JDBC adapter.
Julian > On Aug 25, 2022, at 7:36 AM, Charles Givre <cgi...@gmail.com> wrote: > > Hello Calcite devs, > I had a question about pushdowns for JDBC. Let's say that I'm connecting to > an RDBMS that has a non-standard function foo. Is there a way to effectively > force Calcite to push that function down to the RDBMS via SQL hint or > something like that? > > Thanks! > -- C >