Hello R users
I tried to get maximum of sale date from my dataframe using sqldf in R.
First time when i was executing the following code
>sqldf("select max(sale_date) from test1")
i got the result as 9997.0
BUT
when i was running the same for second time, the result was 2031-04-09 (this
is what correct one!)
why it was happened?
thanks.
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