For some reason the following two queries return different results
Where there is only one activity record and price is 3.63 and quantity is
16.19, the following codes return results of different rounding.
sum("CEIL(`activities`.quantity/60) * 60 / 3600 * `activities`.price").to_s
"58.81"
sum("CEIL(`activities`.quantity/60) * 60 / 3600 * `activities`.price * 1").
to_s
"58.806" # this is the correct one
I have checked the raw sql and both return 58.806.
I believe this is a bug for the sum method.
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