How to merge two tables with same columns?

[ybz12003]

Hello,

I have two data sets; set A is a large one with over 1000 columns, and set B is a small one with only 10 obs and 5 columns.  A and B have the same ID columns; in addition, all the five variables in Set B are from set A with updated values (numeric).  I would like to update set A with set B value with the same IDs.  That's why I think about merging two datasets.  Please let me know how to approach it, thanks.

[Quentin · Accepted solution]

Could you post a little example data?  So a dataset of 10 records with 3 variables, and a dataset with 5 records and 2 variables, and then show what you would want as a result of applying the updates?  Please post the data as DATA steps with the CARDS statement, so that people can run the code to create the example data.

You might want to look into the UPDATE statement, and see if that will do what you're looking for.

[ybz12003]

I think I used update before but forgot how.