When libname _all_ clear; deassigns all libraries on it's own (with the exception of preassigned libraries, which cannot be deassigned at all), there is no "bigger amount of data"!
Yes, just put a libname _all_ clear; where you now have the SQL + filename &mylibs clear;
And try if the same works for your filerefs.
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Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
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