I'm working on ArcGIS 10 desktop version. I have a file with one entity entered multiple times (rows) and each time that has been given a new value against it. I want to sum the values against this entity and populate it in the new field against same entity. As given in the screenshot, A, BB, BE, C etc needs to be sum separately.
VB Script and python within field calculator will also work for me.
أكثر...

VB Script and python within field calculator will also work for me.
أكثر...