Concat Rows?

[ccaudillo100]

Hello, 

I am wanting to take a table in SAS to go from looking like this:

Group_Num	Name (Char)
1	bob
1	sally
1	chris
1	molly
1	sam
2	bobby
2	beth
2	collin
2	sam

To looking like this

Group_Num	Name
1	bob, sally, chris, molly, sam
2	bobby, beth, collin, sam

Any advice on how to do this? I know concat is for when you do this to columns in one row. But I was unsure of how else to refer to this. Thanks in advanced for any help.

[PeterClemmensen]

Try this

data have;
input Group_Num Name $;
datalines;
1 bob   
1 sally 
1 chris 
1 molly 
1 sam   
2 bobby 
2 beth  
2 collin
2 sam   
;

data want;
   set have(rename = name = n);
   by Group_Num;
   length name $200;
   name = catx(', ', name, n);
   if last.Group_Num;
   retain name;
   drop n;
run;

[ccaudillo100 · Accepted solution]

This ended up sending it into repeating the same combination of lines over and over again for each Group_Num. I found this code that was able to run it correctly. From: https://communities.sas.com/t5/SAS-Enterprise-Guide/Concatenating-a-column-based-on-another-column/t...

data want;
 length want $ 2000;
 do until(last.Shopper_ID);
  set have;
  by Shopper_ID ;
  want=catx(',',want,items);
 end;
 drop items;
 run;