It means there are other synonyms for that term. For example "Brakes" and "ABS" (Anti-Lock Brakeing System)  ... View more

Compare the variable lengths in the 2 datasets aa and diag My guess is you have a common variable on both datasets that has different lengths defined. You might want to run a PROC CONTENTS on them both Here's a simple example: data test10 ; length a $10 ; a="1234567890" ; output ; run ; data test8 ; length a $8 ; a="12345678" ; output ; run ; data join ; set test8 test10 ; run ; and here's the log: 2 data test10 ; 3 length a $10 ; 4 a="1234567890" ; 5 output ; 6 run ; NOTE: The data set WORK.TEST10 has 1 observations and 1 variables. NOTE: At least one W.D format was too small for the number to be printed. The decimal may be shifted by the "BEST" format. NOTE: DATA statement used (Total process time): real time 0.13 seconds cpu time 0.00 seconds 7 8 data test8 ; 9 length a $8 ; 10 a="12345678" ; 11 output ; 12 run ; NOTE: The data set WORK.TEST8 has 1 observations and 1 variables. NOTE: DATA statement used (Total process time): real time 0.00 seconds cpu time 0.01 seconds 13 14 data join ; 15 set test8 test10 ; 16 run ; WARNING: Multiple lengths were specified for the variable a by input data set(s). This can cause truncation of data. NOTE: There were 1 observations read from the data set WORK.TEST8. NOTE: There were 1 observations read from the data set WORK.TEST10. NOTE: The data set WORK.JOIN has 2 observations and 1 variables. NOTE: DATA statement used (Total process time): real time 0.02 seconds cpu time 0.03 seconds ... View more

Is this what you mean? data one; input type $ count; datalines; 1 2 2 2 3 1 4 5 5 3 ; run; data two; set one; do i= 1 to count; output; end; run;   ... View more