Method build_multi_column_diagnostic

datafusion/sql/src/expr/subquery.rs:146–161

(
        &self,
        spans: &Spans,
        error_message: &str,
        help_message: &str,
    )

    }

    fn build_multi_column_diagnostic(
        &self,
        spans: &Spans,
        error_message: &str,
        help_message: &str,
    ) -> Diagnostic {
        let full_span = Span::union_iter(spans.0.iter().cloned());
        let mut diagnostic = Diagnostic::new_error(error_message, full_span);

        for (i, span) in spans.iter().skip(1).enumerate() {
            diagnostic.add_note(format!("Extra column {}", i + 1), Some(*span));
        }

        diagnostic.add_help(help_message, None);
        diagnostic
    }

    pub(super) fn parse_set_comparison_subquery(
        &self,