Man, I must need more coffee.
Never mind me. :)
May be back tomorrow, though, when I have the numbers in front of me. I know they didn't add up earlier...
Martin
Hassan Schroeder wrote:
Martin wrote:
My recent test involved the following three values from the column: 2.4950 2.5950 2.7700
When I use a SUM() on these I get: 7.860
Sounds good to me...
If I switch the column over to a FLOAT, then the SUM() becomes 7.8599998950958
Using Excel to test the numbers, or hand-calculating, I get: 7.8550.
Time for a hand upgrade, I think :-) 5 + 5 = 5??? I don't even want to think about how Excel would come up with this...
Shouldn't the SUM() remain with the precision of the DECIMAL type and not try to round to 2 decimal places?
My own, possibly suspect, hand calculations show that SUM() is right;
and it's common knowledge that floating point isn't the right thing to use for situations like this -- that's why there *is* a DECIMAL type.
FWIW!
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