Function preserve_cast

datafusion/expr/src/expr_rewriter/order_by.rs:457–482

()

    #[test]
    fn preserve_cast() {
        let plan = make_input()
            .project(vec![col("c2").alias("c2")])
            .unwrap()
            .project(vec![col("c2").alias("c2")])
            .unwrap()
            .build()
            .unwrap();

        let cases = vec![
            TestCase {
                desc: "Cast is preserved by rewrite_sort_cols_by_aggs",
                input: sort(cast(col("c2"), DataType::Int64)),
                expected: sort(cast(col("c2"), DataType::Int64)),
            },
            TestCase {
                desc: "TryCast is preserved by rewrite_sort_cols_by_aggs",
                input: sort(try_cast(col("c2"), DataType::Int64)),
                expected: sort(try_cast(col("c2"), DataType::Int64)),
            },
        ];

        for case in cases {
            case.run(&plan)
        }
    }

    struct TestCase {
        desc: &'static str,