[FlightSQL][Go] Support for metadata requests

[stoffeastrom]

Hi 👋

Are there any plans to support metadata requests with the golang flight client❓

[zeroshade]

Which metadata requests aren't currently supported? for record batch handling, both the reader and writer support handling the AppMetadata field of the message. Which request do you need that isn't yet supported?

[stoffeastrom]

I was trying to find these

CommandGetCatalogs: list catalogs in a database.
CommandGetCrossReference: list foreign key columns that reference a particular other table.
CommandGetDbSchemas: list schemas in a catalog.
CommandGetExportedKeys: list foreign keys referencing a table.
CommandGetImportedKeys: list foreign keys of a table.
CommandGetPrimaryKeys: list primary keys of a table.
CommandGetSqlInfo: get information about the database itself and its supported SQL dialect.
CommandGetTables: list tables in a catalog/schema.
CommandGetTableTypes: list table types supported (e.g. table, view, system table).

after read the blog post
but couldn't find anything under go path in the repo. I'll look into the AppMetadata.

Thanks for your reply @zeroshade

[wjones127]

@stoffeastrom Those are for FlightSQL, which is built on top of Flight RPC. FlightSQL is brand new to the Java and C++ implementations, and isn't implemented in Go yet.

[zeroshade]

@stoffeastrom There are plans to support FlightSQL in Go eventually, but there are a few requirements that need to get implemented first such as Union arrays and such since those are used in FlightSQL for a variety of responses etc. I don't have any timeline i can give you for that unfortunately.