Function check_column_satisfies_expr

datafusion/sql/src/utils.rs:170–191

(
    columns: &[Expr],
    expr: &Expr,
    purpose: CheckColumnsSatisfyExprsPurpose,
)

}

fn check_column_satisfies_expr(
    columns: &[Expr],
    expr: &Expr,
    purpose: CheckColumnsSatisfyExprsPurpose,
) -> Result<()> {
    if !columns.contains(expr) {
        let diagnostic = Diagnostic::new_error(
            purpose.diagnostic_message(expr),
            expr.spans().and_then(|spans| spans.first()),
        )
        .with_help(format!("Either add '{expr}' to GROUP BY clause, or use an aggregate function like ANY_VALUE({expr})"), None);

        return plan_err!(
            "{}: While expanding wildcard, column \"{}\" must appear in the GROUP BY clause or must be part of an aggregate function, currently only \"{}\" appears in the SELECT clause satisfies this requirement",
            purpose.message_prefix(),
            expr,
            expr_vec_fmt!(columns);
            diagnostic=diagnostic
        );
    }
    Ok(())
}

/// Returns mapping of each alias (`String`) to the expression (`Expr`) it is
/// aliasing.