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Re: st: eliminate oppositie positive and negative values
On 29 Márta 2007, at 02:41, sara borelli wrote:
doesn't that mean that the charges for a given date should sum to zero?
I need to drop the negatives and the positives with
the same date abs(charge) abs(xm) proc personid. As
suggested by Michael Blasnik in a previous e-mail I
runned the following:
If that's the case then can't you just sum the charges within each
person within each date and check if they are zero?
Royal College of Surgeons in Ireland
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