Numeric Overflow with Oracle and Precision less than 19

Hello,

An error occurs when I try to retrieve large numbers from an Oracle database. The error occurs when a numeric value is greater than 2147483647 and the data type has a precision less than 19.

The following statement works in IDEA:

select CAST(2147483648 AS NUMBER(18,0)) as A from dual;

When I try to do this with the DatabaseConnector I get the following error:

> DatabaseConnector::querySql(
+   connection,
+   "select CAST(2147483648 AS NUMBER(18,0)) as N from dual"
+ )
Error in `.createErrorReport()`:
! Error executing SQL:
java.sql.SQLException: Numeric Overflow
An error report has been created at  /.../errorReportSql.txt
Run `rlang::last_error()` to see where the error occurred.
>
> packageVersion("DatabaseConnector")
[1] ‘6.0.0’

Start with DatabaseConnector::querySql and reproduce the CAST(2147483648 AS NUMBER(18,0)) query against Oracle through JDBC. Trace where the numeric result is converted and verify that the query returns 2147483648 without a numeric overflow.