Comparing 2 libraries

[jnunesnew]

Comparing 2 libraries (e.g May vs April) to see if customer ID does not longer exists in the following month ...any SAS code to compare

[Kurt_Bremser]

Do you want to compare libraries or datasets? If you want to compare libraries, do you need to compare certain datasets within the libraries, or all datasets with their respective counterparts?

[jnunesnew]

Hi Kurt many thanks for your response.... We have 2 libraries one for April 20 and the other May20 (with a lot of columns of information) .... we have data for customers in April 20 that no longer exists in May 20... we want to have a sas code to join both libraries and get what customers ID not longer exists in the library of May 20 many thanks for your help.

[Kurt_Bremser]

Please supply the library names (ideally by posting the relevant LIBNAME statements), and the names of the datasets within those libraries (use PROC DATASETS to list the libraries).