Hi, Data A: sub model 1 CT 1 US 1 xR 1 CP data B: sub model_site 1 CT 1 FG 1 YG need final result: sub model model_site 1 CT CT 1 US FG 1 xR YG 1 CP basically i have 2 different data set with subject and model. 'A' data set has 4 observations and 'B' data set has 3 observation. i need to merge this data set by Subject but i need to last row of model_site is missing.
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