Closed:Match col values in two datasets and merge the matched rows in a final o/p_SNPs

Question

[sofie_carolina]

Dataset A is annotated, Dataset B is diseased & phenotype info.

I have two datasets (A & B) which contain snp id's. I have to match snp ID's in both the datasets, where common SNP ID's found, I have to extract other col values (from dataset B) and merge with dataset A using shell scripting or R.