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SQL views evaluate the data in the tables underlying the view’s definition when they’re queried. So, the benefit of using SQL views is that they always return the latest data .
When executed, a PROC SQL view's output can be a subset or superset of one or more underlying files. Beginning in Version 7, you can reference a simple PROC SQL view to update its underlying data. SAS ...
PROC SQL Pass-Through Views A Version 6 PROC SQL Pass-Through view does not need to be updated to be used in Version 7 or Version 8. The conversion of PROC SQL Pass-Through views is automatic and does ...