If you have ever re-run the creation of a user-written function (proc ), you get a warning.
If you try to delete a user-written function that doesn't exist, you get a warning.
So, I came up with this macro that deletes the function if it exists in work.myfuncs.
%macro delete_function(function); %if %sysfunc(exist(WORK.MYFUNCS)) %then %do; PROC SQL noprint; SELECT distinct _Key_ into :key FROM WORK.MYFUNCS WHERE _Key_ = "F.DATES.&function"; %if &sqlobs = 0 %then %return; delete FROM WORK.MYFUNCS WHERE _Key_ = "F.DATES.&function"; QUIT; %end; %mend delete_function;
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