Hi Christophe,

I would try some enumeration, then a sum of that enumeration... data test; input A B C ; cards; 1 197 31 1 197 10 2 197 31 2 195 10 2 199 26 3 197 31 ; run; data test; set test; count +1; by A; if first.a then count = 1; run;

*/this will produce the following*/

1 197 31 1 1 197 10 2 2 197 31 1 2 195 10 2 2 199 26 3 3 197 31 1

Then, a proc means would sum the count variable

proc means data = test noprint; class A; var count; output out = testsum sum = count_sum; run;

then, merge the counted variable back into the data set;

data test2; merge test testsum; by A; run;

gives the following....

1 197 31 1 2 1 197 10 2 2 2 197 31 1 3 2 195 10 2 3 2 199 26 3 3 3 197 31 1 1

Then, an if statement

data final; set test2; if B = 197 and C = 31 and count_sum ne 1 then delete; run;

I'm sure there could be a faster more efficient way to do this... but that's my two cents

Tiffany

>>> cparatte <christophe@PARATTE.NET> 5/6/2008 10:52 AM >>> Hi all

I am wondering how to get the lines X 197 31 out of a table using a data step : data test; input A B C ; cards; 1 197 31 1 197 10 2 197 31 2 195 10 2 199 26 3 197 31 ; run;

For instance, with this table I want the line 3 197 31 because no more other article than 197 and 31 are listed.

Any clue ?

Thanks in advance

Christophe Paratte