Dropping Automatically Variables With Only Missing Values

Sometimes all the values of some variables in a SAS dataset are missing or null, and the author would like to drop these variables to save disk space. Here the author introduces a macro %DROPMISS that can automatically identify and drop SAS variables that have only missing or null values. One has the option of not dropping the variables one does not want to drop by using a parameter in the %DROPMISS macro.

Provided by: SAS Institute Topic: Software Date Added: Mar 2010 Format: PDF

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