I thank all of the availability, forgive my imprecision (I'm a beginner); using where year (A) = 2015; the problem has been solved; if I understood correctly the obstacle was due to the fact that 2015 was a format, while the value saved by Sas was a date? so the date that appeared (2015,2016 and 2017) was only displayed as such, but saved with another value?
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