add_field Action

This add_field action is used to add a field to a structure of a table as part of the ALTER SQL command.

Input Parameters

There is a single msgpack serialized parameter passed to the action.

// The base class for all alter parameters.
struct AirportAlterBase
{
  //! Catalog name to alter
  std::string catalog;
  //! Schema name to alter
  std::string schema;
  //! Entry name to alter
  std::string name;
  bool ignore_not_found;
};

struct AirportAlterTableAddFieldParameters : AirportAlterBase
{
  // This is contains the path of the field and the type of the column.
  std::string column_schema;
  bool if_field_not_exists;

  MSGPACK_DEFINE_MAP(catalog, schema, name, ignore_not_found, if_field_not_exists, column_schema);
};

Return Value

The action is expected to return a single FlightInfo structure with the changes applied. The app_metadata field should be populated as appropriate for the flight to be used as a table.