如何从R中的Presto取回64位整数？

Question

This article describes the state of 64-bit integers in R.

This doc says

R has no built-in type with lossless support for the full range of 64-bit or larger integers. Here, the following rules apply:

Values are returned as numeric

Conversion to character always returns a lossless decimal representation of the data

When I fetch results from a Presto table with 64-bit ints, the results are numeric and mangled. However, when I convert them with as.character , the results are character and mangled.

Have you successfully retrieved 64-bit integers from Presto?

Did you use DBI with the Presto JDBC driver , or is there another way?

Answer 1

除了解决方案以外，还可以解决其他问题，您可以通过将 character 强制转换为SQL查询来“鼓励” character ：

select cast(field as varchar) as field, ...