How to merge 2 datasets with a left join on two charachter strings

[raigner]

Dear All,

i hope someone can help me: 

I have two datasets that I would like to connect to each other.
In dataset A there are AEs listed and in the variable AECMNO the corresponding CMs (2, 3, 26, 27, 28, 29, 30, 31, 32,33,34).
In dataset B, these CMs should be found in the variable CMSPID.
I have tried the following statement. unfortunately a: not all hits are listed and b. 1 wrong hit is listed.

proc sql;
create table AE_CM
as select * from test_AE as A left join cm as B on A.SubjectId=B.SubjectId where (AECMNO contains CMSPID);
quit;

thank you for your help

[Ksharp · Accepted solution]

Could try this one :

from test_AE as A left join cm as B on A.SubjectId=B.SubjectId and findw(AECMNO,strip(CMSPID),' ,');

[raigner]

Thank you very much it works really precisely.

best