I don't see why we should exclude them; I would also caution against treating the driver behavior (especially only drivers in one language) as a reference.
On Tue, Apr 2, 2024, at 23:04, Joel Lubinitsky wrote: > Hi, > > The ADBC spec does not currently define whether system > catalogs/schemas/tables (e.g. information_schema.columns, sqlite_master, > etc) should be included in the result of ConnectionGetObjects. > > A survey of existing driver implementations such as sqlite and postgresql > indicates that the current convention is to exclude system objects, > including only objects that have been defined by the user. Shall we > formally add this to the spec? > > I think this would involve just updating a comment in adbc.h and any > related documentation. The benefit would be better consistency for drivers > developed by vendors outside the arrow-adbc repo. > > For context, this came up in a PR [0] for the DuckDB ADBC implementation. > > Thanks, > Joel > > [0]: https://github.com/duckdb/duckdb/pull/11446
