MACRO GET ATTR

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%MACRO GET_ATTR(dsn=,source=,attrib=) / store des = "Get attribute from SAS Variable";
%LOCAL name;
%LET name = GET_ATTR;
%IF &DSN ne and &SOURCE ne and &ATTRIB ne %THEN %DO;
%IF %INDEX(&DSN,.) eq 0 %THEN %DO;
%LET dsn=WORK.&DSN;
%END;
proc datasets nolist lib = %SCAN(&DSN,1);
contents noprint data = %SCAN(&DSN,2)(keep=&SOURCE) out = work.tmp_data(keep=&ATTRIB);
run;
quit;
proc sql noprint;
select &ATTRIB
  into :&ATTRIB
  from work.tmp_data
;
%IF %UPCASE(&ATTRIB) ne LABEL %THEN %DO;
%LET &ATTRIB = &&&ATTRIB;
%END;
quit;
%PUT &NAME._MESSAGE: Temporary SAS dataset WORK.TMP_DATA created ;
%PUT &NAME._MESSAGE: Field %UPCASE(&SOURCE) in dataset %UPCASE(&DSN) has &ATTRIB = %BQUOTE(&&&ATTRIB.). ;
%PUT &NAME._MESSAGE: Information stored into Local Macrovariable of calling environment: ;
%PUT &NAME._MESSAGE: &ATTRIB=%BQUOTE(&&&ATTRIB);
%PUT ;
%END;
%ELSE %DO;
%PUT vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv;
%PUT &NAME._ERROR: Missing Keyword Parameter(s).;
%PUT &NAME._STATUS: Macro processing abended. ;
%PUT &NAME._STATUS: Global Macrovariable(s) not available. ;
%PUT ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^;
%GEN_MAIL(name=&NAME,rc=1);
%END;
%MEND GET_ATTR;