macro program to check a data-set exists in library

[dcruik]

Then the macro code I provided above will get you that.  Below is the log from testing it.

When there was no work.data1 data set:

15         %macro dsexist(dsname=,dslib=);
16         
17         %put &dslib..&dsname outputflag = %sysfunc(exist(&dslib..&dsname));
18         
19         %mend;
20         
21         %dsexist(dsname=data1,dslib=work);
data1.work outputflag = 0

22

When there was a work.data1 data set:

15         %macro dsexist(dsname=,dslib=);
16         
17         %put &dslib..&dsname outputflag = %sysfunc(exist(&dslib..&dsname));
18         
19         %mend;
20         
21         %dsexist(dsname=data1,dslib=work);
work.data1 outputflag = 1
22