dbt-labs/dbt-core · error

Unsupported operation for materialization type

Error message

Unsupported operation for materialization type {}

What it means

A relation config-changeset helper only accepts models materialized as materialized_view (the Redshift path); the deserialized node's materialized value is something else, so the helper refuses the operation before attempting any config conversion.

Solutions

1. Set materialized: 'materialized_view' on the model
2. Route other materializations to their own changeset helpers
3. Validate the materialization before calling the helper

When it happens

Trigger: Thrown at crates/dbt-adapter/src/relation/relation_impl.rs:1357 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of dbt-labs/dbt-core@0267ce9170 (2026-09-07). Data as JSON: /api/errors/59a1a70a7908b79b. Report an issue: GitHub.

Appendix: source

Thrown at crates/dbt-adapter/src/relation/relation_impl.rs:1357

    let config_wrapper = InternalDbtNodeWrapper::deserialize(node_value).map_err(|e| {
        minijinja::Error::new(
            minijinja::ErrorKind::SerdeDeserializeError,
            format!("Failed to deserialize InternalDbtNodeWrapper: {e}"),
        )
    })?;

    let model = match config_wrapper {
        InternalDbtNodeWrapper::Model(model) => model,
        _ => {
            return Err(minijinja::Error::new(
                minijinja::ErrorKind::InvalidOperation,
                "Expected a model node",
            ));
        }
    };

    if model.__base_attr__.materialized != DbtMaterialization::MaterializedView {
        return Err(minijinja::Error::new(
            minijinja::ErrorKind::InvalidOperation,
            format!(
                "Unsupported operation for materialization type {}",
                &model.__base_attr__.materialized
            ),
        ));
    }

    RedshiftMaterializedViewConfig::try_from(&*model).map_err(|e| {
        minijinja::Error::new(
            minijinja::ErrorKind::SerdeDeserializeError,
            format!("Failed to deserialize RedshiftMaterializedViewConfig: {e}"),
        )
    })
}

#[cfg(test)]
mod tests {

View on GitHub (pinned to 0267ce9170)