Function collect_concat_args

prqlc/prqlc/src/sql/gen_expr.rs:404–411

(expr: &rq::Expr)

}

fn collect_concat_args(expr: &rq::Expr) -> Vec<&rq::Expr> {
    match &expr.kind {
        rq::ExprKind::Operator { name, args } if name == "std.concat" => {
            args.iter().flat_map(collect_concat_args).collect()
        }
        _ => vec![expr],
    }
}

/// Translate expr into a BETWEEN statement if possible, otherwise returns the expr unchanged.
fn try_into_between(expr: rq::Expr, ctx: &mut Context) -> Result<Option<sql_ast::Expr>> {