I have a SAS data set like below. I want to use the first column values as a minuend, which is column 2 - column 1, column 3 - column 1, column 4 - column 1... Which is the most efficient way to do this diff in SAS? Using array or do loop?I have a SAS data set like below. I want to use
阅读背景：
在SAS中执行列之间差异的最有效方法
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