if vs where

[clqa]

if the "if" statement must be used because values for the (IN=variables) are assigned during execution, then when do you use the where statement?

[VDD]

http://www2.sas.com/proceedings/sugi31/238-31.pdf

this may help you decide with to use if and when to use where.

https://blogs.sas.com/content/sasdummy/2016/11/27/if-and-where-sas/