tl;dr: You could subtract 36 Months instead. The result will be Feb 28th.
The result will be clamped to valid days in the resulting month, see checked_add_months for details.
now - Months::new(3 * 1...
java.time
I recommend you avoid using the outdated and error-prone java.util date/time API and do it using the modern date/time API, java.time.
Your given date-time string does not have time zone info...
Maybe you need specify the origin date, for example
> d as.Date(as.numeric(d), origin = "1899-12-30")
[1] "1980-01-01" "2006-01-01" "2023-03-01" "2010-07-01" "2006-04-01"
In Oracle, a DATE is a binary data-type that consists of 7 bytes representing century, year-of-century, month, day, hour, minute and second. It ALWAYS contains those 7 components and it is NEVER store...
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