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  • $\begingroup$ Thanks for an accept but it is always good to hold on a day or two. Let's not discourage others. $\endgroup$ Commented Jul 26, 2016 at 9:07
  • $\begingroup$ awesome, what if I wanted to "reduce" the resulting dataset by computing say the mean of the list instead? $\endgroup$ Commented Jul 26, 2016 at 9:07
  • $\begingroup$ @amrods Then take a look at the first topic linked in comments. It seems to be exactly that.Merge[Mean] is nice in a way that it will automatically reduce A and B lists to the repeating element. Here we have a more general case where I have to use First manually. $\endgroup$ Commented Jul 26, 2016 at 9:09
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    $\begingroup$ Thanks. I really thought there would be a cleaner way of achieving this, since I think is a fairly common operation on a dataset. $\endgroup$ Commented Jul 26, 2016 at 9:21