March 19, 2018 at 5:13 am
I am looking for a way to add or subtract fractions stored as
2/3 , 7/5 or 2/7 , -5/6 etc
in sql server 2005 .
The output should be in fractions only as 1/4 + 2/4 = 3/4
March 19, 2018 at 5:28 am
shiwani.plrs - Monday, March 19, 2018 5:13 AMI am looking for a way to add or subtract fractions stored as
2/3 , 7/5 or 2/7 , -5/6 etc
in sql server 2005 .
The output should be in fractions only as 1/4 + 2/4 = 3/4
Does this look like what you need?
I'm assuming that you are able to code the arithmetic part & just need help converting that to a fraction afterwards.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.
March 19, 2018 at 8:29 am
Using fractions like 1/3 or even 1/10 is always risky when using float calculations. Both 1/3 and 1/10 are not exactly presented in most binairy systems.
A1, A2, B1, B2 all being integers. Calculations can be done with integers (or big ints) only.
So a sum like : A1/B1 + A2/B2
Calculate :
Numerator: (A1*B2 + A2*B1)
Divisor: (B1 * B2)
Both Numerator and Diviser should be devided by their GCD. (Greatest Common Divider).
For a function for the GCD see :
GCD function 1
GCD function 2
You'll probably be able to find more GCD functions on line, which better conforms to your problem.
For very large numbers
Numerator: (A1*B2 / (GCD(B1,B2) + A2*B1/ (GCD(B1,B2))
Divisor: (B1 * B2)/ (GCD(B1,B2)
And then divided by the GCD of both results.
Ben
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