dbt-labs/dbt-core · error

SerdeDeserializeError

Error message

SerdeDeserializeError: {e}

What it means

get_relations_by_pattern tried to deserialize the excluded_schemas Jinja argument into Vec<String> and serde failed: the caller passed a non-list value or a list containing non-string entries, which is rejected before any catalog query runs.

Solutions

1. Pass a list of strings for excluded_schemas or omit the argument
2. Convert entries to strings before the call (e.g. |map('string'))
3. Improve the mapped error to include the offending value

When it happens

Trigger: Thrown at crates/dbt-adapter/src/parse/adapter.rs:196 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/e967057f3b902b36. Report an issue: GitHub.

Appendix: source

Thrown at crates/dbt-adapter/src/parse/adapter.rs:196

            patterned_dangling_sources,
        )
    }

    #[allow(clippy::too_many_arguments)]
    pub fn get_relations_by_pattern(
        &self,
        state: &State,
        schema_pattern: &str,
        table_pattern: &str,
        _exclude: Option<&str>,
        database: Option<&str>,
        _quote_table: Option<bool>,
        excluded_schemas: Option<Value>,
    ) -> Result<Value, minijinja::Error> {
        // Validate excluded_schemas if provided
        if let Some(ref schemas) = excluded_schemas {
            let _: Vec<String> = Vec::<String>::deserialize(schemas.clone()).map_err(|e| {
                minijinja::Error::new(minijinja::ErrorKind::SerdeDeserializeError, e.to_string())
            })?;
        }

        let target = state
            .lookup("target", &[])
            .expect("target is set in parse")
            .get_attr("database")
            .unwrap_or_default();
        let default_database = target.as_str().unwrap_or_default();
        let database = database.unwrap_or(default_database);

        let patterned_relation = RelationPattern::new(
            database.to_string(),
            schema_pattern.to_string(),
            table_pattern.to_string(),
        );

        if state.is_execute() {

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