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Calculate Field Sum for Unique Set

Question asked by johnmdye on Jun 11, 2013
Latest reply on Jun 12, 2013 by johnmdye
I have a table that I've modified coming out of the Network Analyst OD Cost Matrix (If you've read my other post on getting a result object to a GDB Table, I am currently getting this out of ArcMap as a workaround).

The table looks something like this like this, where the latter three fields are type 'Double'

OriginIDDestIDTotal_LengthMarketShareSum_MarketShare
112358924132611241.242455
112358924133611241.362644
112358924134611241.543264
112358924135611241.7254109
112358924132538561.362155
11235892413353856.241844
112358924134538561.533264
112358924135538561.2755109




I need to calculate the 'Sum_MarketShare' field to determine the Sum off all market share for each unique Block Group set.

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