Intentional. See https://github.com/apache/calcite/blob/98f3048fb1407e2878162ffc80388d4f9dd094b2/core/src/main/java/org/apache/calcite/sql/ddl/package-info.java#L25:
* <p>If you are writing a project that requires DDL it is likely that your * DDL syntax is different than ours. We recommend that you copy-paste this * the parser and its supporting classes into your own module, rather than try * to extend this one. I could see small modifications being made to SqlColumnDeclaration. A public constructor would have made it harder to do those while preserving compatibility. > On Aug 7, 2023, at 4:35 PM, <[email protected]> <[email protected]> wrote: > > I notice that SqlColumnDeclaration has a non-public constructor, which makes > it impossible to extend from a different package. > > Is this design intentional or is it a bug? > > > > (There are some good reasons for extending this class. For example, a > comment on the class says "FOREIGN KEY when we support it".) > > > > Thank you, > > Mihai >
