if expression

[Ranjeeta]

How do I write an expression to say that 

one date variable at fac A is equal to another date variable at fac B

E.g.

if REMOVAL_DT at SHS = TransferDate at MGH

[PeterClemmensen]

Is this in a data step? Do you want to set TransferDate equal to REMOVAL_DT or do you want to check if the two are equal?

Please be more specific 🙂

[andreas_lds]

The if statement is only valid in the data step. And you need both variables in one observation, thus you need to merge both datasets.