[ENH] Add support for DESCRIBE [TABLE] #1081
Description
Is your feature request related to a problem? Please describe.
I'm working on plugging the server into Metabase with #1063 and one of the queries received to poll the metadata of a table is:
DESCRIBE "dask_sql"."root"."df"
Additionally, some of the examples in the "Metadata Information" section of our feature overview notebook imply that this was once supported with the Calcite parser.
Currently, running this command gives a parsing exception:
ParsingException: Plan("SHOW [VARIABLE] is not supported unless information_schema is enabled")
Describe the solution you'd like
Support added for DESCRIBE [TABLE], preferably with handling for an optional catalog name so that it can be used by Metabase to populate its data view.