Number (ulong64, cas value) conversion issue

N1QL uses golang float64 as data type.
which looses precision over -2^53 to 2^53 Double-precision floating-point format - Wikipedia

Track via MB-24464

N1QL internally handles the cas has int64 . If did not do any athematic operations on int64 it should give results as it is.

6.6.3 gives right results.

 SELECT RAW TONUMBER("1639300746363797504");
{
    "requestID": "3798863a-6f2d-48c4-9be0-c5c0fef14116",
    "signature": "number",
    "results": [
    1639300746363797504
    ],
    "status": "success",
    "metrics": {
        "elapsedTime": "574.031µs",
        "executionTime": "517.815µs",
        "resultCount": 1,
        "resultSize": 19
    }
}