Function partition_key

nodedb-query/src/window/value_eval.rs:117–130

(
    row: &[Value],
    column_index: &HashMap<String, usize>,
    partition_by: &[SqlExpr],
)

}

fn partition_key(
    row: &[Value],
    column_index: &HashMap<String, usize>,
    partition_by: &[SqlExpr],
) -> String {
    partition_by
        .iter()
        .map(|expr| {
            let v = eval_arg_for_row(expr, row, column_index);
            format!("{v:?}")
        })
        .collect::<Vec<_>>()
        .join("\x00")
}

// ── Value comparison helpers (pub(super) for value_agg) ───────────────────────