fn check_cmd()

in crates/integrations/datafusion/src/table/table_provider_factory.rs [136:158]

• 19 lines of code
• 6 McCabe index (conditional complexity)

fn check_cmd(cmd: &CreateExternalTable) -> Result<()> {
    let CreateExternalTable {
        schema,
        table_partition_cols,
        order_exprs,
        constraints,
        column_defaults,
        ..
    } = cmd;

    // Check if any of the fields violate the constraints in a single condition
    let is_invalid = !schema.fields().is_empty()
        || !table_partition_cols.is_empty()
        || !order_exprs.is_empty()
        || !constraints.is_empty()
        || !column_defaults.is_empty();

    if is_invalid {
        return Err(Error::new(ErrorKind::FeatureUnsupported, "Currently we only support reading existing icebergs tables in external table command. To create new table, please use catalog provider."));
    }

    Ok(())
}