        \n  AggregatorFinal: groupBy=[[]], aggr=[[count(0)]]\
        \n    Projection: {\"Struct\":[{\"UInt64\":10000}]} as count(0):Utf8\
        \n      Expression: {\"Struct\":[{\"UInt64\":10000}]}:Utf8 (Exact Statistics)\
        \n        ReadDataSource: scan partitions: [1], scan schema: [dummy:UInt8], statistics: [read_rows: 1, read_bytes: 1]";
        let actual = format!("{:?}", optimized);
        assert_eq!(expect, actual);
        Ok(())