Hi you can achieve this in SAS by merging the datasets based on the common variable VAR1 and then reassigning the record_ID to match the ID in SET1 . Here's how you can do it:
/* Step 1: Create SET1 */
data SET1;
input ID Var1 P1 $ P2 P3 P4 P5;
datalines;
1 3456
2 8796
3 2222
4 7689
;
run;
/* Step 2: Create SET2 */
data SET2;
input record_ID VAR1 B1 B2 B3 $ B4 B5;
datalines;
10 3456
12 8796
15 2222
20 7689
;
run;
/* Step 3: Merge datasets based on VAR1 */
proc sql;
create table merged as
select a.ID, a.Var1, a.P1, a.P2, a.P3, a.P4, a.P5,
b.B1, b.B2, b.B3, b.B4, b.B5
from SET1 as a
inner join SET2 as b
on a.Var1 = b.Var1;
quit;
/* Step 4: Display the merged dataset */
proc print data=merged;
run;
Using PROC SQL to merge datasets in SAS has several advantages:
Flexibility: PROC SQL allows for complex joins and merges, including inner joins, outer joins, and conditional joins, which can be more flexible than traditional DATA step merges.
Simplicity: The syntax for merging datasets using PROC SQL can be simpler and more intuitive, especially for those familiar with SQL.
References
Match Merging Data Files Using PROC SQL
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