I am doing validation for a dataset I have two datasets dataset A has usubjid, trt, studywk dataset B has usubjid visit dataset A has studywk as 1 2 3 ...11...99 dataset B also has studywk as s01 s02 s03 ....s11,s12,,,s99 B datasets has more number of observations but i need visit only from dataset B and studywk also. what is the best proc sql method to get this two datasets merged.
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