async fn handle_alter_mv_bound(
handler_args: HandlerArgs,
name: ObjectName,
query: BoundQuery,
dependent_relations: HashSet<TableId>,
dependent_udfs: HashSet<FunctionId>,
columns: Vec<Ident>,
emit_mode: Option<EmitMode>,
original_catalog: Arc<TableCatalog>,
) -> Result<RwPgResponse, RwError>